Most of what happens within the video games we play is invisible to us. Even the elements we're looking straight at work because of what's happening behind the scenes. If you've ever watched a behind-the-scenes video about game development, you might've seen these versions of flat, gray game worlds filled with lines and icons pointing every which way, with multiple grids and layers. These are the visual representations of all the systems that make the game work.Assassin's Creed ShadowsThis is an especially weird dichotomy to consider when it comes to lighting in any game with a 3D perspective, but especially so in high-fidelity games. We don't see light so much as we see everything it touches; it's invisible, but it gives us most of our information about game worlds. And it's a lot more complex than "turn on lamp, room light up." Reflection, absorption, diffusion, subsurface scattering--the movement of light is a complex thing that has been explored by physicists in the real world for literally centuries, and will likely be studied for centuries more. In the middle of all of that are game designers, applying the science of light to video games in practical ways, balanced with the limitations of even today's powerful GPUs, just to show all us nerds a good time.If you've wondered why many games seem to be like static amusement parks waiting for you to interact with a few specific things, lighting is often the reason. But it's also the reason more and more game worlds look vibrant and lifelike. Game developers have gotten good at simulating static lighting, but making it move is harder. Dynamic lighting has long been computationally expensive, potentially tanking game performance, and we're finally starting to see that change.Continue Reading at GameSpot

Starving bacteria (cyan) use a microscopic harpoon—called the Type VI secretion system—to stab and kill neighboring cells (magenta). The prey burst, turning spherical and leaking nutrients, which the killers then use to survive and grow. (Image Credit: Glen D'Souza/ASU/Screen shot from video)NewsletterSign up for our email newsletter for the latest science newsBacteria are bad neighbors. And we’re not talking noisy, never-take-out-the-trash bad neighbors. We’re talking has-a-harpoon-gun-and-points-it-at-you bad neighbors. According to a new study in Science, some bacteria hunt nearby bacterial species when they’re hungry. Using a special weapon system called the Type VI Secretion System (T6SS), these bacteria shoot, spill, and then absorb the nutrients from the microbes they harpoon. “The punchline is: When things get tough, you eat your neighbors,” said Glen D’Souza, a study author and an assistant professor at Arizona State University, according to a press release. “We’ve known bacteria kill each other, that’s textbook. But what we’re seeing is that it’s not just important that the bacteria have weapons to kill, but they are controlling when they use those weapons specifically for situations to eat others where they can’t grow themselves.” According to the study authors, the research doesn’t just have implications for bacterial neighborhoods; it also has implications for human health and medicine. By harnessing these bacterial weapons, it may be possible to build better targeted antibiotics, designed to overcome antibiotic resistance. Ruthless Bacteria Use HarpoonsResearchers have long known that some bacteria can be ruthless, using weapons like the T6SS to clear out their competition. A nasty tool, the T6SS is essentially a tiny harpoon gun with a poison-tipped needle. When a bacterium shoots the weapon into another bacterium from a separate species, the needle pierces the microbe without killing it. Then, it injects toxins into the microbe that cause its internal nutrients to spill out.Up until now, researchers thought that this weapon helped bacteria eliminate their competition for space and for food, but after watching bacteria use the T6SS to attack their neighbors when food was scarce, the study authors concluded that these tiny harpooners use the weapon not only to remove rivals, but also to consume their competitors’ leaked nutrients.“Watching these cells in action really drives home how resourceful bacteria can be,” said Astrid Stubbusch, another study author and a researcher who worked on the study while at ETH Zurich, according to the press release. “By slowly releasing nutrients from their neighbors, they maximize their nutrient harvesting when every molecule counts.” Absorbing Food From NeighborsTo show that the bacteria used this system to eat when there was no food around, the study authors compared their attacks in both nutrient-rich and nutrient-poor environments. When supplied with ample resources, the bacteria used their harpoons to kill their neighbors quickly, with the released nutrients leaking out and dissolving immediately. But when resources were few and far between, they used their harpoons to kill their neighbors slowly, with the nutrients seeping out and sticking around. “This difference in dissolution time could mean that the killer cells load their spears with different toxins,” D’Souza said in another press release. While one toxin could eliminate the competition for space and for food when nutrients are available, another could create a food source, allowing bacteria to “absorb as many nutrients as possible” when sustenance is in short supply.Because of all this, this weapon system is more than ruthless; it’s also smart, and important to some species’ survival. When genetically unedited T6SS bacteria were put in an environment without food, they survived on spilled nutrients. But when genetically edited T6SS bacteria were placed in a similar environment, they died, because their ability to find food in their neighbors had been “turned off.”Harnessing Bacterial HarpoonsAccording to the study authors, the T6SS system is widely used by bacteria, both in and outside the lab. “It’s present in many different environments,” D’Souza said in one of the press releases. “It’s operational and happening in nature, from the oceans to the human gut.” The study authors add that their research could change the way we think about bacteria and could help in our fight against antibiotic resistance. In fact, the T6SS could one day serve as a foundation for targeted drug delivery systems, which could mitigate the development of broader bacterial resistance to antibiotics. But before that can happen, however, researchers have to learn more about bacterial harpoons, and about when and how bacteria use them, both to beat and eat their neighbors.Article SourcesOur writers at Discovermagazine.com use peer-reviewed studies and high-quality sources for our articles, and our editors review for scientific accuracy and editorial standards. Review the sources used below for this article:Sam Walters is a journalist covering archaeology, paleontology, ecology, and evolution for Discover, along with an assortment of other topics. Before joining the Discover team as an assistant editor in 2022, Sam studied journalism at Northwestern University in Evanston, Illinois.1 free article leftWant More? Get unlimited access for as low as $1.99/monthSubscribeAlready a subscriber?Register or Log In1 free articleSubscribeWant more?Keep reading for as low as $1.99!SubscribeAlready a subscriber?Register or Log In

Mario Kart World is one of the year's hottest games, but its pivot to an open world setting, while peeling back kart customization options, opened a massive rift for Sonic Racing: CrossWorlds to drift into. And Sega is determined to do everything possible to make its kart racer the one to beat by including numerous guest characters and cross-platform, multiplayer contests. I took Sonic Racing: CrossWorlds for a test drive at the Summer Game Fest, and it's a strong contender racing game of the year.Sonic Racing: CrossWorlds' Deep Kart CustomizationThe biggest difference between Sonic Racing: CrossWorlds and Mario Kart World is that Sega's title focuses on kart customization. I'm not just talking about colors and tires; CrossWorlds introduces Gadgets, add-ons that augment your car, giving your whip helpful abilities to bring into the race. (Credit: Sega)Each ride has a license plate with six slots where you can slot your chosen Gadgets. A Gadget can take up one, two, or three slots, so the idea is to find a mix that pairs well with character traits. There's a surprising amount of depth for people who want to min/max their favorite anthropomorphic animal.I chose Sonic, a speed character, and added a Gadget that started him with two boosts (one slot), a Gadget that improved his speed while trailing an opponent (two slots), and a Gadget that improved acceleration (three slots). There were so many Gadgets that I could have easily spent my entire demo session building a car to match my playstyle. I envision people happily getting lost in the weeds before participating in their first race.(Credit: Sega)Gameplay: This Ain't Mario Kart WorldAlthough it's not an open world like Mario Kart World, Sonic Racing: CrossWorlds injects a unique spin on traditional kart racing. The familiar trappings are all here, such as rings to boost your top speed. Each Grand Prix consists of three maps, but the gimmick at play is stage transitions. Recommended by Our EditorsAbout a third of the way down a course, a giant ring-portal opens, presenting a new world and track (hence the name "CrossWorlds"). The shift in tone and terrain keeps the races fast-paced and unpredictable. I particularly liked how whoever is in first place can sometimes choose which CrossWorlds track to go down, controlling the tempo. With every race completion, you earn credits based on your performance that you can cash in for new car parts.In a stark contrast to Mario Kart World, Sonic Racing: CrossWorlds is far more aggressive, even on lower difficulties. At the start of each grand prix, the game assigns you a rival—this is the character to beat, and the one who taunts you all match. Beat them all, and you can race high-powered Super variants.Just about everything caused you to lose rings: bumping into other players, the walls, and, of course, getting hit by items. The series' trademark rubberband AI is still in place, too. Even in the press demo, I wasn't safe from taking four items back to back and being knocked off the stage mere feet away from the finish line.(Credit: Sega)The demo didn't include the new characters that debuted at the Summer Game Fest, but I studied the character screen to see who else could be coming to the game. Including the 12 Sonic characters available in the demo, I counted a whopping 64 character slots. They include Hatsune Miku (the ultra-popular Vocaloid), Joker (from Persona 5), Ichiban Kasuga (from Like a Dragon), and Steve (from Minecraft). However, I hope to see other classic Sega IPs like in previous Sonic Racing titles.Platforms and Release DateWill Sega do what Nintendon't? I had an exhilarating time playing Sonic Racing: CrossWorld, and I can't wait to see more wild track compositions. Sonic Racing: CrossWorlds will be available on Nintendo Switch, PC, PlayStation 4, PlayStation 5, Xbox One, and Xbox Series X/S on Sept. 25, 2025. A Nintendo Switch 2 version is planned for later in the year.

DriftingSpirit Member Oct 25, 2017 18,563 They note how they usually start with PC and scale down, but they will be doing it the other way around this time to avoid issues with the console versions. 4:15 for console focus and 60fps 38:50 for the Series S comment  bsigg Member Oct 25, 2017 25,153 [DF] Inside The Witcher 4 Unreal Engine 5 Tech Demo: CD Projekt RED + Epic Deep Dive Interview https://www.youtube.com/watch?v=OplYN2MMI4Q www.resetera.com   Skot Member Oct 30, 2017 645 720p on Series S incoming   Bulby Prophet of Truth Member Oct 29, 2017 6,006 Berlin I think think any series s user will be happy with a beautiful 900p 30fps   Chronos Member Oct 27, 2017 1,249 This better not be a Cyberpunk situation all over again. If they can't get it to work on S, then they may just need to abandon that console. Work out a deal with MS or wait for their next generation.   HellofaMouse Member Oct 27, 2017 8,551 i wonder if this'll come out before the gen is over? good chance itll be a 2077 situation, cross-gen release with a broken ps6 version  logash Member Oct 27, 2017 6,526 This makes sense since they want to have good performance on lower end machines and they mentioned that it was easier to scale up than to scale down. They also mentioned their legacy on PC and how they plan on scaling it up high like they usually do on PC.   KRT Member Aug 7, 2020 247 Series S was a mistake   chris 1515 Member Oct 27, 2017 7,116 Barcelona Spain The game have raytracing GI and reflection it will probably be 30 fps 600p-720p on Xbox Series S.   bitcloudrzr Member May 31, 2018 21,044 Bulby said: I think think any series s user will be happy with a beautiful 900p 30fps Click to expand... Click to shrink...   Yuuber Member Oct 28, 2017 4,540 KRT said: Series S was a mistake Click to expand... Click to shrink... Can we stop with these stupid takes? For all we know it sold as much as Series X, helped several games have better optimization on bigger consoles and it will definitely help optimizing newer games to the Nintendo Switch 2.  MANTRA Member Feb 21, 2024 1,198 No one who cares about 60fps should be buying a Series S, just make it 30fps.   Roytheone Member Oct 25, 2017 6,185 Chronos said: This better not be a Cyberpunk situation all over again. If they can't get it to work on S, then they may just need to abandon that console. Work out a deal with MS or wait for their next generation. Click to expand... Click to shrink... They can just go for 30 fps instead on the Series S. No need for a special deal for that, that's allowed.  Matterhorn Member Feb 6, 2019 254 United States Hoping for a very nice looking 30fps Switch 2 version.   Universal Acclaim Member Oct 5, 2024 2,617 Maybe off topic, but is 30fps target not so important anymore for 2027 industry-leading graphics? GTA is mainly doing it for design/physics/etc. whch is why the game can't be scaled down to 720-900p/60fps?   chris 1515 Member Oct 27, 2017 7,116 Barcelona Spain Matterhorn said: Hoping for a very nice looking 30fps Switch 2 version. Click to expand... Click to shrink... It will be a full port a few years after like The Witcher 3., they don't use software lumen here. I doubt the Switch 2 Raytracing capaclity is high enough to use the same pipeline to produce the Switch 2 version. EDIT: And they probably need to redo all the assets. https://www.reddit.com/r/FortNiteBR/comments/1l4a1o4/fortnite_on_the_switch_2_looks_great_these_low/ Fortnite doesn't use Nanite and Lumen on Switch 2.  Last edited: Yesterday at 4:18 PM bitcloudrzr Member May 31, 2018 21,044 Universal Acclaim said: Maybe off topic, but is 30fps target not so important anymore for 2027 industry-leading graphics? GTA is mainly doing it for design/physics/etc. whch is why the graphics can't be scaled down to 720p/60fps? Click to expand... Click to shrink... Graphics are the part of the game that can be scaled, it is CPU load that is the more difficult part, although devs have actually made cuts in the latter to increase performance mode fps viability. Even with this focus on 60fps performance modes, they are always going to have room to make a higher fidelity 30fps mode. Specifically with UE5 though, performance has been such a disaster all around and Epic seems to be taking it seriously now.   Greywaren Member Jul 16, 2019 13,530 Spain 60 fps target is fantastic, I wish it was the norm.   julia crawford Took the red AND the blue pills Member Oct 27, 2017 40,709 i am very ok with lower fps on the series s, it is far more palatable than severe resolution drops with upscaling artifacts.   Spoit Member Oct 28, 2017 5,599 Chronos said: This better not be a Cyberpunk situation all over again. If they can't get it to work on S, then they may just need to abandon that console. Work out a deal with MS or wait for their next generation. Click to expand... Click to shrink... And yet people keep talking about somehow getting PS6 games to work on the sony portable, which is probably going to be like half as powerful as a PS5, like that won't hold games back   PLASTICA-MAN Member Oct 26, 2017 29,563 chris 1515 said: The game have raytracing GI and reflection it will probably be 30 fps 600p-720p on Xbox Series S. Click to expand... Click to shrink... There is kinda a misconception of how Lumen and the hybrid RT is handled in UE5 titles. AO is also part of the ray traced pipeline through the HW Lumen too. Just shadows are handled separately from the RT system by using VSM which in final look behvae quite like RT shadows in shape, same how FF16 handled the shadows looking like RT ones while it isn't traced. UE5 can still trace shadows if they want to push things even further.  overthewaves Member Sep 30, 2020 1,203 What about the PS5 handheld?   nullpotential Member Jun 24, 2024 87 KRT said: Series S was a mistake Click to expand... Click to shrink... Consoles were a mistake.  GPU Member Oct 10, 2024 1,075 I really dont think Series S/X will be much of a factor by the time this game comes out.   Lashley <<Tag Here>> Member Oct 25, 2017 65,679 Just make series s 480p 30fps   pappacone Member Jan 10, 2020 4,076 Greywaren said: 60 fps target is fantastic, I wish it was the norm. Click to expand... Click to shrink... It pretty much is   Super Studied the Buster Sword Member Jan 29, 2022 13,601 I hope they can pull 60 FPS off in the full game.   Theorry Member Oct 27, 2017 69,045 "target" Uh huh. We know how that is gonna go.  Jakartalado Member Oct 27, 2017 2,818 São Paulo, Brazil Skot said: 720p on Series S incoming Click to expand... Click to shrink... If the PS5 is internally at 720p up to 900p, I seriously doubt that.  Revoltoftheunique Member Jan 23, 2022 2,312 It will be unstable 60fps with lots of stuttering.   defaltoption Plug in a controller and enter the Konami code The Fallen Oct 27, 2017 12,485 Austin KRT said: Series S was a mistake Click to expand... Click to shrink... With that same attitude in this case you could say consoles are the mistake. You on your Series X or PS5 Pro are holding my 5090 back. Not so fun of a take anymore. Thats why its stupid.   Horns Member Dec 7, 2018 3,423 I hope Microsoft drops the requirement for Series S by the time this comes out.   chris 1515 Member Oct 27, 2017 7,116 Barcelona Spain PLASTICA-MAN said: There is kinda a misconception of how Lumen and the hybrid RT is handled in UE5 titles. AO is also part of the ray traced pipeline through the HW Lumen too. Just shadows are handled separately from the RT system by using VSM which in final look behvae quite like RT shadows in shape, same how FF16 handled the shadows looking like RT ones while it isn't traced. UE5 can still trace shadows if they want to push things even further. Click to expand... Click to shrink... Yes indirect shadows are handled by hardware lumen. But at the end ot doesn¡t change my comment. i think the game will be 600´720p at 30 fps on Series S.  bitcloudrzr Member May 31, 2018 21,044 Spoit said: And yet people keep talking about somehow getting PS6 games to work on the sony portable, which is probably going to be like half as powerful as a PS5, like that won't hold games back Click to expand... Click to shrink... Has it been confirmed that Sony is going to have release requirements like the XS?   Commander Shepherd Member Jan 27, 2023 173 Anyone remember when no load screens was talked about for Witcher 3?   chris 1515 Member Oct 27, 2017 7,116 Barcelona Spain No this is probably different than most game are doing it here the main focus is the 60 fps mode and after they can create a balanced(40 fps) and 30 fps mode. This is not the other way around.  stanman Member Feb 13, 2025 235 defaltoption said: With that same attitude in this case you could say consoles are the mistake. You on your Series X or PS5 Pro are holding my 5090 back. Not so fun of a take anymore. Thats why its stupid. Click to expand... Click to shrink... And your mistake is comparing a PC graphics card to a console.  PLASTICA-MAN Member Oct 26, 2017 29,563 chris 1515 said: Yes indirect shadows are handled by hardware lumen. But at the end ot doesn¡t change my comment. i think the game will be 600´720p at 30 fps on Series S. Click to expand... Click to shrink... Yes. I am sure Series S will have HW solution but probably at 30 FPS. that would be a miracle if they achieve 60 FPS.  ArchedThunder Uncle Beerus Member Oct 25, 2017 21,278 chris 1515 said: It will be a full port a few years after like The Witcher 3., they don't use software lumen here. I doubt the Switch 2 Raytracing capaclity is high enough to use the same pipeline to produce the Switch 2 version. EDIT: And they probably need to redo all the assets. https://www.reddit.com/r/FortNiteBR/comments/1l4a1o4/fortnite_on_the_switch_2_looks_great_these_low/ Fortnite doesn't use Nanite and Lumen on Switch 2. Click to expand... Click to shrink... Fortnite not using Lumen or Nanite at launch doesn't mean they can't run well on Switch 2. It's a launch port and they prioritized clean IQ and 60fps. I wouldn't be surprised to see them added later. Also it's not like the ray tracing in a Witcher 3 port has to match PS5, there's a lot of scaling back that can be done with ray tracing without ripping out the kitchen sink. Software lumen is also likely to be an option on P.   jroc74 Member Oct 27, 2017 34,465 Interesting times ahead.... bitcloudrzr said: Has it been confirmed that Sony is going to have release requirements like the XS? Click to expand... Click to shrink... Your know good n well everything about this rumor has been confirmed. /S  Derbel McDillet ▲ Legend ▲ Member Nov 23, 2022 25,250 Chronos said: This better not be a Cyberpunk situation all over again. If they can't get it to work on S, then they may just need to abandon that console. Work out a deal with MS or wait for their next generation. Click to expand... Click to shrink... How does this sound like a Cyberpunk issue? They didn't say they can't get it to work on the S.   defaltoption Plug in a controller and enter the Konami code The Fallen Oct 27, 2017 12,485 Austin stanman said: And your mistake is comparing a PC graphics card to a console. Click to expand... Click to shrink...   reksveks Member May 17, 2022 7,628 Horns said: I hope Microsoft drops the requirement for Series S by the time this comes out. Click to expand... Click to shrink... why? dev can make it 30 fps on series s and 60 fps on series x if needed. if they aren't or don't have to drop it for gta vi, they probably ain't dropping it for tw4.  chris 1515 Member Oct 27, 2017 7,116 Barcelona Spain defaltoption said: With that same attitude in this case you could say consoles are the mistake. You on your Series X or PS5 Pro are holding my 5090 back. Not so fun of a take anymore. Thats why its stupid. Click to expand... Click to shrink... No the consoles won't hold back your 5090 because the game is created with hardware lumen, RT reflection, virtual shadows maps and Nanite plus Nanite vegetation in minds. Maybe Nanite character too in final version? If the game was made with software lumen as the base it would have holding back your 5090... Your PC will have much better IQ, framerate and better raytracing with Megalight(direct raytraced shadows with tons of lighe source) and better raytracing settings in general.  bitcloudrzr Member May 31, 2018 21,044 jroc74 said: Interesting times ahead.... Your know good n well everything about this rumor has been confirmed. /S Click to expand... Click to shrink... Sony is like the opposite of a platform holder "forcing" adoption, for better or worse.   defaltoption Plug in a controller and enter the Konami code The Fallen Oct 27, 2017 12,485 Austin chris 1515 said: No the consoles won't hold back yout 5090 because the game is created with hardware lumen, RT reflection, virtual shadows maps and Nanite plus Nanite vegetation in minds. Maybe Nanite character too in final version? If the game was made with software lumen as the base it would have holding back your 5090... Your PC will have much better IQ, framerate and better raytracing with Megalight(direct raytraced shadows) and better raytracing settings in general. Click to expand... Click to shrink... Exactly, the series s is not a "mistake" or holding any version of the game on console or even PC back, that's what I'm saying to the person I replied to, its stupid to say that.   cursed beef Member Jan 3, 2021 998 Have to imagine MS will lift the Series S parity clause when the next consoles launch. Which will be before/around the time W4 hits, right?   Alvis Saw the truth behind the copied door Member Oct 25, 2017 12,270 EU Chronos said: This better not be a Cyberpunk situation all over again. If they can't get it to work on S, then they may just need to abandon that console. Work out a deal with MS or wait for their next generation. Click to expand... Click to shrink... ? they said that 60 FPS on Series S is challenging, not the act of releasing the game there at all. The game can simply run at 30 FPS on Series S if they can't pull off 60 FPS. Or have a 40 FPS mode in lieu of 60 FPS. The CPU and storage speed differences between last gen and current gen were gigantic. This isn't even remotely close to a comparable situation.  defaltoption Plug in a controller and enter the Konami code The Fallen Oct 27, 2017 12,485 Austin misqoute post   jroc74 Member Oct 27, 2017 34,465 defaltoption said: With that same attitude in this case you could say consoles are the mistake. You on your Series X or PS5 Pro are holding my 5090 back. Not so fun of a take anymore. Thats why its stupid. Click to expand... Click to shrink... Ah yes, clearly 5090 cards are the vast majority of the minimum requirements for PC games. How can anyone say this with a straight face anymore when there are now PC games running on a Steam Deck. At least ppl saying that about the Series S are comparing it to other consoles. That said, it is interesting they are focusing on consoles first, then PC. 

Last year, MACK Books published Architecture from Below, which anthologized writings by the French Brazilian architect, theorist, and painter Sérgio Ferro. (Douglas Spencer reviewed it for AN.) Now, MACK follows with Design and the Building Site and Complementary Essays, the second in the trilogy of books dedicated to Ferro’s scholarship. The following excerpt of the author’s 2023 preface to the English edition, which preserves its British phrasing, captures Ferro’s realization about the working conditions of construction sites in Brasília. The sentiment is likely relatable even today for young architects as they discover how drawings become buildings. Design and the Building Site and Complementary Essays will be released on May 22. If I remember correctly, it was in 1958 or 1959, when Rodrigo and I were second- or third year architecture students at FAUUSP, that my father, the real estate developer Armando Simone Pereira, commissioned us to design two large office buildings and eleven shops in Brasilia, which was then under construction. Of course, we were not adequately prepared for such an undertaking. Fortunately, Oscar Niemeyer and his team, who were responsible for overseeing the construction of the capital, had drawn up a detailed document determining the essential characteristics of all the private sector buildings. We followed these prescriptions to the letter, which saved us from disaster. Nowadays, it is hard to imagine the degree to which the construction of Brasilia inspired enthusiasm and professional pride in the country’s architects. And in the national imagination, the city’s establishment in the supposedly unpopulated hinterland evoked a re-founding of Brazil. Up until that point, the occupation of our immense territory had been reduced to a collection of arborescent communication routes, generally converging upon some river, following it up to the Atlantic Ocean. Through its ports, agricultural or extractive commodities produced by enslaved peoples or their substitutes passed towards the metropolises; goods were exchanged in the metropolises for more elaborate products, which took the opposite route. Our national identity was summed up in a few symbols, such as the anthem or the flag, and this scattering of paths pointing overseas. Brasilia would radically change this situation, or so we believed. It would create a central hub where the internal communication routes could converge, linking together hithertoseparate junctions, stimulating trade and economic progress in the country’s interior. It was as if, for the first time, we were taking care of ourselves. At the nucleus of this centripetal movement, architecture would embody the renaissance. And at the naval of the nucleus, the symbolic mandala of this utopia: the cathedral. Rodrigo and I got caught up in the euphoria. And perhaps more so than our colleagues, because we were taking part in the adventure with ‘our’ designs. The reality was very different — but we did not know that yet. At that time, architects in Brazil were responsible for verifying that the construction was in line with the design. We had already monitored some of our first building sites. But the construction company in charge of them, Osmar Souza e Silva’s CENPLA, specialized in the building sites of modernist architects from the so-called Escola Paulista led by Vilanova Artigas (which we aspired to be a part of, like the pretentious students we were). Osmar was very attentive to his clients and his workers, who formed a supportive and helpful team. He was even more careful with us, because he knew how inexperienced we were. I believe that the CENPLA was particularly important in São Paulo modernism: with its congeniality, it facilitated experimentation, but for the same reason, it deceived novices like us about the reality of other building sites. Consequently, Rodrigo and I travelled to Brasilia several times to check that the constructions followed ‘our’ designs and to resolve any issues. From the very first trip, our little bubble burst. Our building sites, like all the others in the future capital, bore no relation to Osmar’s. They were more like a branch of hell. A huge, muddy wasteland, in which a few cranes, pile drivers, tractors, and excavators dotted the mound of scaffolding occupied by thousands of skinny, seemingly exhausted wretches, who were nevertheless driven on by the shouts of master builders and foremen, in turn pressured by the imminence of the fateful inauguration date. Surrounding or huddled underneath the marquees of buildings under construction, entire families, equally skeletal and ragged, were waiting for some accident or death to open up a vacancy. In contact only with the master builders, and under close surveillance so we would not speak to the workers, we were not allowed to see what comrades who had worked on these sites later told us in prison: suicide abounded; escape was known to be futile in the unpopulated surroundings with no viable roads; fatal accidents were often caused by weakness due to chronic diarrhoea, brought on by rotten food that came from far away; outright theft took place in the calculation of wages and expenses in the contractor’s grocery store; camps were surrounded by law enforcement. I repeat this anecdote yet again not to invoke the benevolence of potential readers, but rather to point out the conditions that, in my opinion, allowed two students (Flávio Império joined us a little later) still in their professional infancy to quickly adopt positions that were contrary to the usual stance of architects. As the project was more Oscar Niemeyer’s than it was our own, we did not have the same emotional attachment that is understandably engendered between real authors and their designs. We had not yet been imbued with the charm and aura of the métier. And the only building sites we had visited thus far, Osmar’s, were incomparable to those we discovered in Brasilia. In short, our youthfulness and unpreparedness up against an unbearable situation made us react almost immediately to the profession’s satisfied doxa. Unprepared and young perhaps, but already with Marx by our side. Rodrigo and I joined the student cell of the Brazilian Communist Party during our first year at university. In itself, this did not help us much: the Party’s Marxism, revised in the interests of the USSR, was pitiful. Even high-level leaders rarely went beyond the first chapter of Capital. But at the end of the 1950s, the effervescence of the years to come was already nascent:  […] this extraordinary revival […] the rediscovery of Marxism and the great dialectical texts and traditions in the 1960s: an excitement that identifies a forgotten or repressed moment of the past as the new and subversive, and learns the dialectical grammar of a Hegel or an Adorno, a Marx or a Lukács, like a foreign language that has resources unavailable in our own. And what is more: the Chinese and Cuban revolutions, the war in Vietnam, guerrilla warfare of all kinds, national liberation movements, and a rare libertarian disposition in contemporary history, totally averse to fanaticism and respect for ideological apparatuses of (any) state or institution. Going against the grain was almost the norm. We were of course no more than contemporaries of our time. We were soon able to position ourselves from chapters 13, 14, and 15 of Capital, but only because we could constantly cross-reference Marx with our observations from well-contrasted building sites and do our own experimenting. As soon as we identified construction as manufacture, for example, thanks to the willingness and even encouragement of two friends and clients, Boris Fausto and Bernardo Issler, I was able to test both types of manufacture — organic and heterogeneous — on similar-sized projects taking place simultaneously, in order to find out which would be most convenient for the situation in Brazil, particularly in São Paulo. Despite the scientific shortcomings of these tests, they sufficed for us to select organic manufacture. Arquitetura Nova had defined its line of practice, studies, and research. There were other sources that were central to our theory and practice. Flávio Império was one of the founders of the Teatro de Arena, undoubtedly the vanguard of popular, militant theatre in Brazil. He won practically every set design award. He brought us his marvelous findings in spatial condensation and malleability, and in the creative diversion of techniques and material—appropriate devices for an underdeveloped country. This is what helped us pave the way to reformulating the reigning design paradigms.  We had to do what Flávio had done in the theatre: thoroughly rethink how to be an architect. Upend the perspective. The way we were taught was to start from a desired result; then others would take care of getting there, no matter how. We, on the other hand, set out to go down to the building site and accompany those carrying out the labor itself, those who actually build, the formally subsumed workers in manufacture who are increasingly deprived of the knowledge and know-how presupposed by this kind of subsumption. We should have been fostering the reconstitution of this knowledge and know-how—not so as to fulfil this assumption, but in order to reinvigorate the other side of this assumption according to Marx: the historical rebellion of the manufacture worker, especially the construction worker. We had to rekindle the demand that fueled this rebellion: total self-determination, and not just that of the manual operation as such. Our aim was above all political and ethical. Aesthetics only mattered by way of what it included—ethics. Instead of estética, we wrote est ética [this is ethics]. We wanted to make building sites into nests for the return of revolutionary syndicalism, which we ourselves had yet to discover. Sérgio Ferro, born in Brazil in 1938, studied architecture at FAUUSP, São Paulo. In the 1960s, he joined the Brazilian communist party and started, along with Rodrigo Lefevre and Flávio Império, the collective known as Arquitetura Nova. After being arrested by the military dictatorship that took power in Brazil in 1964, he moved to France as an exile. As a painter and a professor at the École Nationale Supérieure d’Architecture de Grenoble, where he founded the Dessin/Chantier laboratory, he engaged in extensive research which resulted in several publications, exhibitions, and awards in Brazil and in France, including the title of Chevalier des Arts et des Lettres in 1992. Following his retirement from teaching, Ferro continues to research, write, and paint.

Graduate Student Develops an A.I.-Based Approach to Restore Time-Damaged Artwork to Its Former Glory The method could help bring countless old paintings, currently stored in the back rooms of galleries with limited conservation budgets, to light Scans of the painting retouched with a new technique during various stages in the process. On the right is the restored painting with the applied laminate mask. Courtesy of the researchers via MIT In a contest for jobs requiring the most patience, art restoration might take first place. Traditionally, conservators restore paintings by recreating the artwork’s exact colors to fill in the damage, one spot at a time. Even with the help of X-ray imaging and pigment analyses, several parts of the expensive process, such as the cleaning and retouching, are done by hand, as noted by Artnet’s Jo Lawson-Tancred. Now, a mechanical engineering graduate student at MIT has developed an artificial intelligence-based approach that can achieve a faithful restoration in just hours—instead of months of work. In a paper published Wednesday in the journal Nature, Alex Kachkine describes a new method that applies digital restorations to paintings by placing a thin film on top. If the approach becomes widespread, it could make art restoration more accessible and help bring countless damaged paintings, currently stored in the back rooms of galleries with limited conservation budgets, back to light. The new technique “is a restoration process that saves a lot of time and money, while also being reversible, which some people feel is really important to preserving the underlying character of a piece,” Kachkine tells Nature’s Amanda Heidt. Meet the engineer who invented an AI-powered way to restore art Watch on While filling in damaged areas of a painting would seem like a logical solution to many people, direct retouching raises ethical concerns for modern conservators. That’s because an artwork’s damage is part of its history, and retouching might detract from the painter’s original vision. “For example, instead of removing flaking paint and retouching the painting, a conservator might try to fix the loose paint particles to their original places,” writes Hartmut Kutzke, a chemist at the University of Oslo’s Museum of Cultural History, for Nature News and Views. If retouching is absolutely necessary, he adds, it should be reversible. As such, some institutions have started restoring artwork virtually and presenting the restoration next to the untouched, physical version. Many art lovers might argue, however, that a digital restoration printed out or displayed on a screen doesn’t quite compare to seeing the original painting in its full glory. That’s where Kachkine, who is also an art collector and amateur conservator, comes in. The MIT student has developed a way to apply digital restorations onto a damaged painting. In short, the approach involves using pre-existing A.I. tools to create a digital version of what the freshly painted artwork would have looked like. Based on this reconstruction, Kachkine’s new software assembles a map of the retouches, and their exact colors, necessary to fill the gaps present in the painting today. The map is then printed onto two layers of thin, transparent polymer film—one with colored retouches and one with the same pattern in white—that attach to the painting with conventional varnish. This “mask” aligns the retouches with the gaps while leaving the rest of the artwork visible. “In order to fully reproduce color, you need both white and color ink to get the full spectrum,” Kachkine explains in an MIT statement. “If those two layers are misaligned, that’s very easy to see. So, I also developed a few computational tools, based on what we know of human color perception, to determine how small of a region we can practically align and restore.” The method’s magic lies in the fact that the mask is removable, and the digital file provides a record of the modifications for future conservators to study. Kachkine demonstrated the approach on a 15th-century oil painting in dire need of restoration, by a Dutch artist whose name is now unknown. The retouches were generated by matching the surrounding color, replicating similar patterns visible elsewhere in the painting or copying the artist’s style in other paintings, per Nature News and Views. Overall, the painting’s 5,612 damaged regions were filled with 57,314 different colors in 3.5 hours—66 hours faster than traditional methods would have likely taken. Overview of Physically-Applied Digital Restoration Watch on “It followed years of effort to try to get the method working,” Kachkine tells the Guardian’s Ian Sample. “There was a fair bit of relief that finally this method was able to reconstruct and stitch together the surviving parts of the painting.” The new process still poses ethical considerations, such as whether the applied film disrupts the viewing experience or whether A.I.-generated corrections to the painting are accurate. Additionally, Kutzke writes for Nature News and Views that the effect of the varnish on the painting should be studied more deeply. Still, Kachkine says this technique could help address the large number of damaged artworks that live in storage rooms. “This approach grants greatly increased foresight and flexibility to conservators,” per the study, “enabling the restoration of countless damaged paintings deemed unworthy of high conservation budgets.” Get the latest stories in your inbox every weekday.

NASA's Mars Odyssey orbiter captured the first horizon view of Arsia Mons, an enormous volcano on the Red Planet. Credit: NASA / JPL-Caltech / ASU NASA’s longest-running Mars mission has sent back an unprecedented side view of a massive volcano rising above the Red Planet, just before dawn.On May 2, as sunlight crept over the Martian horizon, the Odyssey spacecraft captured Arsia Mons, a towering, long-extinct volcano, puncturing a glowing band of greenish haze in the planet’s upper atmosphere. The 12-mile-high volcano — nearly twice the height of Mauna Loa in Hawaii — punctures a veil of fog, emerging like a monument to the planet's ancient past. The space snapshot is both visually arresting and scientifically enlightening."We picked Arsia Mons hoping we would see the summit poke above the early morning clouds," said Jonathon Hill, who leads Odyssey's camera operations at Arizona State University, in a statement, "and it didn't disappoint."   Arsia Mons sits at the southern end of a towering trio of volcanoes called the Tharsis Montes. Credit: NASA / JPL-Caltech To get this view, Odyssey had to do something it wasn’t originally built for. The orbiter, which has been flying around Mars since 2001, usually points its camera straight down to map the planet’s surface. But over the past two years, scientists have begun rotating the spacecraft 90 degrees to look toward the horizon. That adjustment allows NASA to study how dust and ice clouds change over the seasons. Mashable Light Speed Want more out-of-this world tech, space and science stories? Sign up for Mashable's weekly Light Speed newsletter. By clicking Sign Me Up, you confirm you are 16+ and agree to our Terms of Use and Privacy Policy. Thanks for signing up! Though the image is still an aerial view, the vantage point is of the horizon, similar to how astronauts can see Earth's horizon 250 miles above the planet on the International Space Station. From that altitude, Earth doesn’t fill their entire view — there’s enough distance and perspective for them to see the planet's curved edge meeting the blackness of space. Odyssey flies above Mars at about the same altitude. Arsia Mons sits at the southern end of a towering trio of volcanoes called the Tharsis Montes. The Tharsis region is home to the largest volcanoes in the solar system. The lack of plate tectonics on the Red Planet allowed them to grow many times larger than those anywhere on Earth.Together, they dominate the Martian landscape and are sometimes covered in clouds, especially in the early hours. But not just any clouds — these are made of water ice, a different breed than the planet’s more common carbon dioxide clouds. Arsia Mons is the cloudiest of the three.  Scientists have recently studied a particular, localized cloud formation that occurs over the mountain, dubbed the Arsia Mons Elongated Cloud. The transient feature, streaking 1,100 miles over southern Mars, lasts only about three hours in the morning during spring before vanishing in the warm sunlight. It's formed by strong winds being forced up the mountainside.   Related Stories The cloudy canopy on display in Odyssey's new image, according to NASA, is called the aphelion cloud belt. This widespread seasonal system drapes across the planet's equator when Mars is farthest from the sun. This is Odyssey's fourth side image since 2023, and it is the first to show a volcano breaking through the clouds."We're seeing some really significant seasonal differences in these horizon images," said Michael D. Smith, a NASA planetary scientist, in a statement. "It’s giving us new clues to how Mars' atmosphere evolves over time." Topics NASA Elisha Sauers Elisha Sauers writes about space for Mashable, taking deep dives into NASA's moon and Mars missions, chatting up astronauts and history-making discoverers, and jetting above the clouds. Through 17 years of reporting, she's covered a variety of topics, including health, business, and government, with a penchant for public records requests. She previously worked for The Virginian-Pilot in Norfolk, Virginia, and The Capital in Annapolis, Maryland. Her work has earned numerous state awards, including the Virginia Press Association's top honor, Best in Show, and national recognition for narrative storytelling. For each year she has covered space, Sauers has won National Headliner Awards, including first place for her Sex in Space series. Send space tips and story ideas to [email protected] or text 443-684-2489. Follow her on X at @elishasauers.

Extra-sensory perception The nine-armed octopus and the oddities of the cephalopod nervous system A mix of autonomous and top-down control manage the octopus's limbs. Kenna Hughes-Castleberry – Jun 7, 2025 8:00 am | 19 Credit: Nikos Stavrinidis / 500px Credit: Nikos Stavrinidis / 500px Story text Size Small Standard Large Width * Standard Wide Links Standard Orange * Subscribers only   Learn more With their quick-change camouflage and high level of intelligence, it’s not surprising that the public and scientific experts alike are fascinated by octopuses. Their abilities to recognize faces, solve puzzles, and learn behaviors from other octopuses make these animals a captivating study. To perform these processes and others, like crawling or exploring, octopuses rely on their complex nervous system, one that has become a focus for neuroscientists. With about 500 million neurons—around the same number as dogs—octopuses’ nervous systems are the most complex of any invertebrate. But, unlike vertebrate organisms, the octopus’s nervous system is also decentralized, with around 350 million neurons, or 66 percent of it, located in its eight arms. “This means each arm is capable of independently processing sensory input, initiating movement, and even executing complex behaviors—without direct instructions from the brain,” explains Galit Pelled, a professor of Mechanical Engineering, Radiology, and Neuroscience at Michigan State University who studies octopus neuroscience. “In essence, the arms have their own ‘mini-brains.’” A decentralized nervous system is one factor that helps octopuses adapt to changes, such as injury or predation, as seen in the case of an Octopus vulgaris, or common octopus, that was observed with nine arms by researchers at the ECOBAR lab at the Institute of Marine Research in Spain between 2021 and 2022. By studying outliers like this cephalopod, researchers can gain insight into how the animal’s detailed scaffolding of nerves changes and regrows over time, uncovering more about how octopuses have evolved over millennia in our oceans. Brains, brains, and more brains Because each arm of an octopus contains its own bundle of neurons, the limbs can operate semi-independently from the central brain, enabling faster responses since signals don’t always need to travel back and forth between the brain and the arms. In fact, Pelled and her team recently discovered that “neural signals recorded in the octopus arm can predict movement type within 100 milliseconds of stimulation, without central brain involvement.” She notes that “that level of localized autonomy is unprecedented in vertebrate systems.” Though each limb moves on its own, the movements of the octopus’s body are smooth and conducted with a coordinated elegance that allows the animal to exhibit some of the broadest range of behaviors, adapting on the fly to changes in its surroundings. “That means the octopus can react quickly to its environment, especially when exploring, hunting, or defending itself,” Pelled says. “For example, one arm can grab food while another is feeling around a rock, without needing permission from the brain. This setup also makes the octopus more resilient. If one arm is injured, the others still work just fine. And because so much decision-making happens at the arms, the central brain is freed up to focus on the bigger picture—like navigating or learning new tasks.” As if each limb weren’t already buzzing with neural activity, things get even more intricate when researchers zoom in further—to the nerves within each individual sucker, a ring of muscular tissue, which octopuses use to sense and taste their surroundings. “There is a sucker ganglion, or nerve center, located in the stalk of every sucker. For some species of octopuses, that’s over a thousand ganglia,” says Cassady Olson, a graduate student at the University of Chicago who works with Cliff Ragsdale, a leading expert in octopus neuroscience. Given that each sucker has its own nerve centers—connected by a long axial nerve cord running down the limb—and each arm has hundreds of suckers, things get complicated very quickly, as researchers have historically struggled to study this peripheral nervous system, as it’s called, within the octopus’s body. “The large size of the brain makes it both really exciting to study and really challenging,” says Z. Yan Wang, an assistant professor of biology and psychology at the University of Washington. “Many of the tools available for neuroscience have to be adjusted or customized specifically for octopuses and other cephalopods because of their unique body plans.” While each limb acts independently, signals are transmitted back to the octopus’s central nervous system. The octopus’ brain sits between its eyes at the front of its mantle, or head, couched between its two optic lobes, large bean-shaped neural organs that help octopuses see the world around them. These optic lobes are just two of the over 30 lobes experts study within the animal’s centralized brain, as each lobe helps the octopus process its environment. This elaborate neural architecture is critical given the octopus’s dual role in the ecosystem as both predator and prey. Without natural defenses like a hard shell, octopuses have evolved a highly adaptable nervous system that allows them to rapidly process information and adjust as needed, helping their chances of survival. Some similarities remain While the octopus’s decentralized nervous system makes it a unique evolutionary example, it does have some structures similar to or analogous to the human nervous system. “The octopus has a central brain mass located between its eyes, and an axial nerve cord running down each arm (similar to a spinal cord),” says Wang. “The octopus has many sensory systems that we are familiar with, such as vision, touch (somatosensation), chemosensation, and gravity sensing.” Neuroscientists have homed in on these similarities to understand how these structures may have evolved across the different branches in the tree of life. As the most recent common ancestor for humans and octopuses lived around 750 million years ago, experts believe that many similarities, from similar camera-like eyes to maps of neural activities, evolved separately in a process known as convergent evolution. While these similarities shed light on evolution's independent paths, they also offer valuable insights for fields like soft robotics and regenerative medicine. Occasionally, unique individuals—like an octopus with an unexpected number of limbs—can provide even deeper clues into how this remarkable nervous system functions and adapts. Nine arms, no problem In 2021, researchers from the Institute of Marine Research in Spain used an underwater camera to follow a male Octopus vulgaris, or common octopus. On its left side, three arms were intact, while the others were reduced to uneven, stumpy lengths, sharply bitten off at varying points. Although the researchers didn’t witness the injury itself, they observed that the front right arm—known as R1—was regenerating unusually, splitting into two separate limbs and giving the octopus a total of nine arms. “In this individual, we believe this condition was a result of abnormal regeneration [a genetic mutation] after an encounter with a predator,” explains Sam Soule, one of the researchers and the first author on the corresponding paper recently published in Animals. The researchers named the octopus Salvador due to its bifurcated arm coiling up on itself like the two upturned ends of Salvador Dali’s moustache. For two years, the team studied the cephalopod’s behavior and found that it used its bifurcated arm less when doing “riskier” movements such as exploring or grabbing food, which would force the animal to stretch its arm out and expose it to further injury. “One of the conclusions of our research is that the octopus likely retains a long-term memory of the original injury, as it tends to use the bifurcated arms for less risky tasks compared to the others,” elaborates Jorge Hernández Urcera, a lead author of the study. “This idea of lasting memory brought to mind Dalí’s famous painting The Persistence of Memory, which ultimately became the title of the paper we published on monitoring this particular octopus.” While the octopus acted more protective of its extra limb, its nervous system had adapted to using the extra appendage, as the octopus was observed, after some time recovering from its injuries, using its ninth arm for probing its environment. “That nine-armed octopus is a perfect example of just how adaptable these animals are,” Pelled adds. “Most animals would struggle with an unusual body part, but not the octopus. In this case, the octopus had a bifurcated (split) arm and still used it effectively, just like any other arm. That tells us the nervous system didn’t treat it as a mistake—it figured out how to make it work.” Kenna Hughes-Castleberry is the science communicator at JILA (a joint physics research institute between the National Institute of Standards and Technology and the University of Colorado Boulder) and a freelance science journalist. Her main writing focuses are quantum physics, quantum technology, deep technology, social media, and the diversity of people in these fields, particularly women and people from minority ethnic and racial groups. Follow her on LinkedIn or visit her website. 19 Comments

It's finally here. Credit: Nintendo Best places to buy the Switch 2 online Buy the Switch 2 at Walmart Switch 2 console $449 at Walmart Buy the Switch 2 Mario Kart World bundle at Walmart Nintendo Switch 2 + Mario Kart World Bundle $499 at Nintendo Buy the Switch 2 at Best Buy Switch 2 console $449.99 at Best Buy Buy the Switch 2 Mario Kart bundle at GameStop Nintendo Switch 2 + Mario Kart World Bundle $499.99 at GameStop Eight years after the launch of the original, the Nintendo Switch 2 is finally being released in midnight launch events around the country. At the same time, gamers around the United States are checking retailers like Walmart, Target, Best Buy, GameStop, and even Costco in search of the next-generation console.On social media platforms like X, Reddit, and YouTube, gamers are sharing photos and videos of long lines and excited crowds outside stores like GameStop and Target. And some lucky gamers are already showing off their successful purchases. While there are dozens of Switch 2 games and accessories available for purchase, gamers looking for the console itself have two options: Get the base Switch 2 console for $449.99 or opt for the Nintendo Switch 2 + Mario Kart World Bundle for $499.99. Of course, both are in short supply, even as Nintendo forecasts selling 20 million units in the next 12 months. You May Also Like The first customers to get their hands on Switch 2 consoles were the lucky players who placed a preorder through GameStop or Best Buy. Both retailers hosted midnight ET launch events around the country, which gave people the chance to pick up their preorders in person. In addition, these retailers will be selling limited supplies of consoles on a first-come, first-served basis, according to their websites. Mashable recently received a Switch 2 review unit, and we'll be sharing more first impressions soon. Mashable Light Speed Want more out-of-this world tech, space and science stories? Sign up for Mashable's weekly Light Speed newsletter. By clicking Sign Me Up, you confirm you are 16+ and agree to our Terms of Use and Privacy Policy. Thanks for signing up! However, even though the Switch 2 has been officially released, that doesn't mean online inventory will be available right away. Nintendo is only allowing purchases for customers with active, paid Switch Online memberships. And Target previously announced that it wouldn't start selling the console online until Friday (June 6). However, retailers like Best Buy and Walmart promised to start selling the console online promptly at midnight.When preorders officially went live on April 24, gamers promptly crashed retailer websites, and history may repeat itself for launch day. But if you want to try your luck at placing an online order, head to the retailers and start smashing that refresh button like you're playing Super Smash Bros. Related Stories You can check the latest Switch 2 stock at the following online stores:If those links don't work, you can also look for the Nintendo Switch 2 + Mario Kart World Bundle at Walmart, GameStop, Best Buy, Costco, and Staples. Timothy Beck Werth Tech Editor Timothy Beck Werth is the Tech Editor at Mashable, where he leads coverage and assignments for the Tech and Shopping verticals. Tim has over 15 years of experience as a journalist and editor, and he has particular experience covering and testing consumer technology, smart home gadgets, and men’s grooming and style products. Previously, he was the Managing Editor and then Site Director of SPY.com, a men's product review and lifestyle website. As a writer for GQ, he covered everything from bull-riding competitions to the best Legos for adults, and he’s also contributed to publications such as The Daily Beast, Gear Patrol, and The Awl.Tim studied print journalism at the University of Southern California. He currently splits his time between Brooklyn, NY and Charleston, SC. He's currently working on his second novel, a science-fiction book.

Tapjoy studies have shown that mobile gamers prefer rewarded ads to interstitials 4-to-1. It’s a valuable insight for advertisers and developers alike when it comes maximizing ad revenue, but rewarded ads also have the potential to impact other parts of the user experience and your game’s performance overall.To ensure a healthy portfolio, it’s critical that developers understand the additional impact rewarded ads have beyond ad revenue. This includes their effect on metrics like in-app purchase conversion rate, average user spend, 30-day retention, and daily session count. To find out more, we conducted an in-depth analysis of eight different high-DAU apps across iOS and Android for several varying timeframes to find out how users behave when exposed to rewarded ads compared to those who aren’t.Higher IAP conversion ratesWe studied new app users during a one month period and segmented them into two different groups: Those who engaged with at least one rewarded ad and those who never engaged with an ad. We then compared the IAP conversion rates (or percentage of users that made a first time purchase) for each group.On average, users who engage with rewarded ads are 4.5 times more likely to make in-app purchase versus those who do not.7 out of the 8 of apps studied demonstrated higher conversion rates among those who engaged with ads versus those who did not.In the case of two of the apps studies, we found that users who engaged with an ad were over 9 times more likely to make a purchase.Higher average spend per userWe measured the average spend per user in each app for seven days before and seven days after a user’s first rewarded ad engagement.In all 8 apps studied, user spend increased significantly after they engaged with an ad. The average weighted increase in user spend was 326%. Among the apps studied, the boost in average spend per user ranged from just shy of 200% to over 500%.Increased 30-day retentionWe measured the 30-day retention rates of users who engaged with 1-6 rewarded ads during their first week of using an app. Three types of rewarded ad formats were studied (rewarded video, full-screen interstitial, and offerwall placements) and measured against the average 30-day retention benchmark for all apps.Players who complete just one rewarded ad in the first week — whether a video, full-screen interstitial or an offerwall engagement — have a retention rate of at least 50%, compared to the benchmark of 13%.Rewarded video has the most profound effect on retention of any ad type. 30-day retention steadily increases with each video view, ranging from 53% to 68%, which is 3.5-5 times greater than the benchmark.Higher average daily session countWe measured the average number of user sessions per day — both seven days before and seven days after a user’s first rewarded ad engagement — for each high-DAU app.In all cases, users engaged with apps more frequently after completing a rewarded ad.All 8 apps studied demonstrated a lift in the average number of user sessions among those who completed an ad.The average weighted increase in user sessions across all apps was 34%.What does this mean for developers?4 key monetization strategies became abundantly clear following our research:Make rewarded ads easy to find – To increase visibility, consider adding a button to your app’s home screen or storefront, or utilize in-app messaging or push notifications to promote rewarded offers. Tapjoy’s Native-to-Earn, Message-to-Earn, and Push-to-Earn features make it easy for developers to add and manage these additions right from the dashboard.Explore currency sale promotions – Try running limited-time offers in which your players earn more currency than usual for every rewarded ad they complete. These currency sales can drive serious spikes in revenue. With Tapjoy, it’s easy to personalize your currency sale with custom branding and to control the payout ratio.Introduce ads early – Getting users to interact with ads early in their gameplay increases the chance that they will continue to engage with or make a purchase in your app. Rewarded ads introduce players to the mechanics and benefits of your in-app currency, so it’s important to make ads visible and easy to access during the player’s first few sessions.Integrate multiple rewarded formats – Integrating multiple formats — such as rewarded video and offerwall combined — provides developers with the best opportunity to monetize their users and maximize revenue. Diversifying formats not only unlocks higher eCPMs, but it provides players with the freedom to pick and choose the rewarded offer that appeals most to them.