May 30, 20253 min readWhat Causes Glaciers to Collapse like the Event That Buried a Swiss Village?Climate change and thawing permafrost play a role in destabilizing glaciersBy Jen Schwartz edited by Dean VisserThe small village of Blatten in the Swiss Alps was largely destroyed by a landslide that occurred as a result of the partial collapse of the Birch Glacier on May 28, 2025. Alexandre Agrusti/AFP via Getty ImagesAn unstable glacier in the Swiss Alps collapsed this week, sending a deluge of rock, ice and mud through the valley below and burying the village of Blatten almost entirely. Scientists had warned about the possibility of a dangerous event related to the glacier, and village residents had been evacuated days earlier—but the glacier’s near-total breakup came as a surprise. One person is reported missing. Government officials initially estimated the debris deposit to be several dozen meters thick and approximately two kilometers long. Making matters worse, the collapse of the glacier, called the Birch Glacier, blocked the flow of the Lonza River, which runs through the valley. As a result, a newly created lake upstream from the debris field flooded an area that has now overflowed into the deposit zone, which could cause a debris flow downstream. As of Friday afternoon local time, officials have reported that the water flow is approaching the top of the scree cone, which is the accumulation of loose, rocky debris.Why did the glacier break apart?The glacier’s collapse and the subsequent landslide—which was so intense that it corresponded to a magnitude 3.1 earthquake captured by the Swiss Seismological Service—likely arose from a series of rockfalls that occurred above the glacier over the past couple of weeks. The rocks, dislodged because of high-altitude snowmelt, exerted significant pressure on the relatively small glacier, according to officials. Experts are looking into longer-term factors that may have weakened the glacier’s stability even before those rockfalls. Christophe Lambiel, a glaciologist who also specializes in high-mountain geology at the University of Lausanne in Switzerland, said on RTS Swiss Television that the rockfalls were linked to climate change. “The increase in the falling rocks is due to the melting permafrost, which increases instability,” Lambiel said, as reported on NPR.On supporting science journalismIf you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.How would climate change lead to a glacier’s collapse?New research published on Thursday in Science finds that, under current climate policies, more than three quarters of the world’s glacial mass could disappear by the end of this century. In this scenario, almost all small and relatively low-elevation glaciers, like the one in Switzerland, would be wiped out. In a 2024 article for Scientific American, journalist Alec Luhn explained that “the deterioration of ice and snow is triggering feedback loops that will heat the world even further. Permafrost, the frozen ground that holds twice as much carbon as is currently found in the atmosphere, is thawing and releasing these stores.” Thawing permafrost is not just dangerous because it creates instability, as in the case of Birch Glacier. As Luhn wrote, “Research has revealed that the permafrost zone is now releasing more carbon than it absorbs, heating the planet further.”Who is at risk from disintegrating glaciers?It’s clear that the weakening of Switzerland’s Birch Glacier was at least partially caused by rockfall. There are other ways in which changes to glaciers are causing risk—and occasional devastation—to people, communities and infrastructure. As a 2023 E&E News article explained, “At least 15 million people worldwide live in the flood paths of dangerous glacial lakes that can abruptly burst their banks and rush down mountainsides.” These so-called glacial lake outburst floods can be fatal and cause catastrophic damage. “The deterioration of the planet’s snow and ice regions,” wrote Luhn in his 2024 article, “is costing the world billions of dollars in damages,” according to a 2024 State of the Cryosphere report What can be done to preserve glaciers—and protect communities?Giant plastic blankets, gravity snow guns and painted rocks are all potential strategies to slow ice melt in the world’s mountain regions. The sound that glaciers make when water is coursing through their icy cracks can be used to predict glacial lake outburst floods—and thus to save lives. There’s also a growing sense of reckoning with the fate of the world’s glaciers. An essay about the Global Glacier Casualty List, which documents glaciers that have melted or are critically endangered, was also released on Thursday in Science. In it, Rice University anthropologists Cymene Howe and Dominic Boyer write, “The world’s first funeral for a glacier was held in Iceland in 2019 for a little glacier called ‘Ok….’ Since then, memorials for disappeared glaciers have increased across the world, illustrating the integral connection between loss in the natural world and human rituals of remembrance.”

Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday. Earth and space mingle in stunning ways for the 2025 Milky Way Photographer of the Year contest. From the “geological masterpiece” of Coyote Buttes, Utah to the sandstone terrain of desolate Ennedi, Chad to a lava-spewing volcano in Guatemala, this year’s entries dazzle from all corners of the globe. We even get a view of the Milky Way from off-planet with a photograph from NASA astronaut Don Pettit taken aboard the International Space Station. “The Wave”Coyote Buttes, UT, USAOne of my greatest passions is visiting stunning natural wonders and paying my personal tribute to them through night photography. This image was taken at Coyote Buttes, a geological masterpiece located in Arizona, where special access permits are required to protect it for future generations.Despite the intense cold during those days, it was incredibly exciting to visit the great sandstone wave for the first time and enjoy its spectacular shapes and colors.To capture this 360° panorama, I planned for the Milky Way and focused on creating a balanced photographic composition. It’s hard to put into words the beauty of this place, but I hope my photograph manages to convey it.Credit: Luis Cajete / 2025 Milky Way Photographer of the Year Daniel Zafra Portill The Milky Way contains an estimated 200-400 billion stars, but we can only see a fraction of the celestial bodies with our naked eyes. Photography opens up the skies to the staggering light show floating around us. (Click to enlarge images.) “Echiwile Arch” Ennedi, ChadWhen one first Googles information about visiting Chad, the results aren’t very encouraging from a safety perspective. Nevertheless, the intrepid astrophotographer in me decided to take the chance and visit this landlocked country, specifically the Ennedi Massif in the north.Sparsely populated and completely devoid of light pollution, the three-day drive from the capital, N’Djamena, was well worth the troubles and risks involved. The region is filled with numerous rock formations, shapes, and arches, offering an abundance of options for foreground elements to frame the dramatic night skies. Seen here is a small arch in the shape of a hoof in the Ennedi region.Credit: Vikas Chander / 2025 Milky Way Photographer of the Year Daniel Zafra Portill “Fortress of Light”Jujuy, ArgentinaSince I started shooting the night sky, I’ve always sought out landscapes that feel like they belong to another planet — remote, untouched, and far from light pollution. That’s exactly what I found in “The Cathedral,” a surreal rock formation in Jujuy, Argentina.Photographing at over 4,000 meters (13,000 feet) presented its challenges, but when I arrived and saw the rock formations, I was completely blown away. The landscape felt like something from a fantasy world, and the towering cliffs instantly reminded me of a giant stone fortress sculpted by nature.As twilight gave way to full darkness, the core of the Milky Way appeared high overhead, shining with incredible clarity. I patiently waited as the galactic center slowly descended toward the horizon, perfectly aligning above the cliffs.While capturing the panorama, the camera picked up bands of orange and green airglow, adding a unique glow to the horizon.This image captures everything I love about photographing the Milky Way — the silence of remote places, the peace of standing under a pristine sky, and the deep connection I feel to the moment, fully present and grateful to witness it.Credit: Mauricio Salazar / 2025 Milky Way Photographer of the Year Daniel Zafra Portill “The Night Guardians” Easter Island, ChileEaster Island had been on my bucket list for a long time, and it once seemed almost impossible to reach. On our first night there, the weather forecast looked promising, so we decided to go ahead with the tour our group had booked 4–5 months earlier. However, Rapa Nui sits in the middle of the Pacific Ocean, where the weather is notoriously unpredictable. When we woke up at 3 a.m. in our hotel, the sky was completely covered in clouds. Still, we decided to take the risk, knowing the forecast for the next few nights was even worse.An hour later, we were frantically photographing the statues at Rano Raraku—the quarry where nearly all of the island’s 900 statues were carved—when the sky suddenly began to clear. By 5 a.m., it was completely clear, and we had less than two hours to capture all the shots we wanted. We felt incredibly lucky to be in the right place at the right time.Credit: Rositsa Dimitrova / 2025 Milky Way Photographer of the Year Daniel Zafra Portill “Blossom”Hehuan Mountain Dark Sky Park, TaiwanAfter three years of waiting, the Yushan alpine rhododendrons are finally in bloom once again on Taiwan’s 3,000-meter-high Hehuan Mountain. On this special night, distant clouds helped block city light pollution, revealing an exceptionally clear view of the Milky Way. A solar flare from active region AR3664 reached Earth that evening, intensifying the airglow and adding an otherworldly touch to the sky.Together, these rare natural events created a breathtaking scene—vivid blooms glowing softly beneath a star-filled sky.Credit: Ethan Su / 2025 Milky Way Photographer of the Year Daniel Zafra Portill “Spines and Starlight”Kanaan, NamibiaOn our second Namibia Photography Tour, we began our journey once again at one of our favorite spots in Kanaan. Last year was an incredible experience, but this time, we decided to explore more of this vast land.During a scouting trip, I stumbled upon the perfect composition—two quiver trees standing tall with a large cactus in the foreground, all beautifully aligned with the Milky Way. I had always wanted to capture the Milky Way alongside a big cactus, so in that moment, it felt like a special gift.Getting everything in focus was a bit challenging, as I had to get extremely close to the cactus without getting poked. To achieve perfect sharpness, I used focus stacking. Additionally, I shot with an astro-modified camera and a GNB Nebula filter to enhance the details of the night sky.Credit: Burak Esenbey / 2025 Milky Way Photographer of the Year Daniel Zafra Portill “Galaxy of the Stone Array” Moeraki Boulders, New ZealandThe Milky Way hangs over the sea. The night sky of the Southern Hemisphere condenses the poetry of Li Bai, a poet from China’s Tang Dynasty, into eternity. On a clear night, the Milky Way pours down over the sea like a waterfall from the sky, intertwining with the atmospheric glow on the water’s surface.Credit: Alvin Wu / 2025 Milky Way Photographer of the Year Daniel Zafra Portill “One in a Billion ”ISS (International Space Station)I float in the Cupola, looking out the seven windows composing this faceted transparent jewel. While my mind is submerged in contemplation, my eyes gorge on the dim reflections from a nighttime Earth. There are over eight billion people that call this planet home. There are seven of us that can say the same for Space Station. What a privilege it is to be here. I used an orbital star tracker to take out the star streak motion from orbit.Credit: Don Pettit / 2025 Milky Way Photographer of the Year Daniel Zafra Portill “Winter Fairy Tale”Dobratsch Nature Park, AustriaUndoubtedly my wildest location this winter: Austria’s Dobratsch mountain! If I had to describe it in two words, it would be a “Winter Fairytale”!Despite a 5 a.m. work shift, I drove to Austria by 1 p.m., worried about my fitness and lack of sleep. After a 2-hour hike through the snow with a 22kg backpack and sled, the stunning views kept me energized.Arriving at the cabin (where I had planned my winter panorama two years ago), I was greeted by untouched snow, completely free of footprints. I spent the evening exploring compositions, and this is my favorite: a panorama of the winter Milky Way with reddish nebulae, stretching above Dobratsch Mountain.I captured the Zodiacal light and even the Gegenschein glow! The sky was magnificent, with Jupiter and Mars shining brightly. In the foreground is the cabin, where I spent 3 freezing hours (-12°C), waiting for the perfect shot of the Milky Way’s core. It turned out exactly as I envisioned—a true winter fairytale.Credit: Uroš Fink / 2025 Milky Way Photographer of the Year Daniel Zafra Portill “Valle de los Cactus” San Pedro de Atacama, ChileA panoramic shot of the Milky Way in a remote area of the Atacama Cactus Valley, known for its large concentration of cactus plants. I love this place with its countless possibilities. The panorama was taken just as the galactic center began to rise, with the spectacular Gum Nebula visible on the right.It was an especially bright night with a breathtaking sky. The valley isn’t easy to navigate, but it’s always worth trying to find new compositions in such stunning locations beneath the night sky.Credit: Pablo Ruiz / 2025 Milky Way Photographer of the Year Daniel Zafra Portill “Cosmic Fire”Volcán Acatenango, GuatemalaOn the early morning of June 2, 2024, I summited Acatenango Volcano for the first time, hoping to witness the fiery beauty of the neighboring Volcan de Fuego against the Milky Way’s backdrop. That night, the volcano was incredibly active—each thunderous explosion reverberated in my chest, while glowing lava illuminated the dark slopes. Above, the Milky Way stretched diagonally across the sky, a mesmerizing band of stars contrasting with the chaos below. As the volcano erupted, the ash plume rose vertically, forming an acute angle of about 45 degrees with the galaxy’s diagonal path, creating a stunning visual contrast between Earth’s fury and the cosmos’ serenity.Capturing this required a fast, wide-angle lens (f/2.8), an ISO of 3200, and a 10-second exposure to balance the volcanic glow with the starlight. The challenge was timing the shot during a new moon and aligning the right moment for the Milky Way to cross the frame next to the volcano. I used Lightroom as the editor. This image is special for its storytelling—the raw power of Volcan de Fuego meeting the tranquil expanse of the galaxy.Credit: Sergio Montúfar / 2025 Milky Way Photographer of the Year Daniel Zafra Portill “Lake RT5” Zanskar, HimalayasLake RT5 is a pristine alpine lake nestled at 5,700 meters above sea level. My passion has always been to capture the unseen Himalayas in their rawest form. This journey led us through rugged mountains and glaciers, where we discovered several unknown alpine lakes and named them along the way.We endured multiple nights in extremely cold, unpredictable conditions. Due to the ever-changing weather and limited time, I used a blue hour blend to achieve a cleaner foreground. Since my campsite was right beside the lake, I was able to capture the tracked sky shot from the exact same position later that night.I was in awe of the incredible airglow illuminating the Himalayan skies. The raw image had even more intense colors, but I toned them down to stay true to reality. This was undoubtedly one of the most unforgettable nights I’ve ever spent in the heart of the Himalayas.Credit: Tanay Das / 2025 Milky Way Photographer of the Year Daniel Zafra Portill “A Stellar View From The Cave” Saint Raphael, FranceFramed by the rugged mouth of a coastal cave, this image captures the heart of the Milky Way rising over the Mediterranean Sea. Taken during the peak of the Galactic Core season last May, it blends the natural beauty of the foreground with the awe-inspiring vastness of the cosmos. A winding road, illuminated by passing cars, creates a dynamic trail of light that guides the eye toward the stars above.This photo is a reminder that magic often hides in the most unexpected places. All it takes is a little patience, planning, and passion.Credit: Anthony Lopez / 2025 Milky Way Photographer of the Year Daniel Zafra Portill “Boot Arch Perseids” Alabama Hills, CA, USAThe Perseid Meteor Shower occurs every August, raining down hundreds of meteors over a few nights. In 2024, I had planned to photograph it from the Canadian Rockies, but wildfires forced me to change my plans at the last minute. After checking wildfire maps, I found a safe haven in the Eastern Sierra Nevada.After three full nights of capturing meteors, I created this image. Sitting on the rock is my friend Arne, who often joins me on these adventures, gazing up at the magnificent core of our galaxy. Each meteor is painstakingly aligned to its true location in the night sky. The final depiction shows all the meteors I captured, combined into one frame—as if the Earth hadn’t been rotating and all the meteors had fallen at once.Credit: Mike Abramyan / 2025 Milky Way Photographer of the Year Daniel Zafra Portill “Starlit Ocean: A Comet, the setting Venus, the Milky Way, and McWay Falls” – California, USACapturing this image was a race against time, light, and distance. With Comet Tsuchinshan–ATLAS (C/2023 A3) making its approach, I knew I had a rare opportunity to see it with the naked eye before it faded into the cosmos. I embarked on a five-hour round trip to McWay Falls in Big Sur, one of the few Bortle 2 locations accessible along California’s coast. My window was narrow—just six precious minutes of true darkness before the Moon rose and washed out the night sky. But those six minutes were unforgettable.In that brief span, the Milky Way arched high above the Pacific, Venus shimmered as it set over the ocean, and the comet streaked quietly across the sky—a celestial visitor gracing this iconic coastal cove. The soft cascade of McWay Falls and the stillness of the starlit ocean created a surreal harmony between Earth and sky. It was one of the most vivid and humbling naked-eye comet sightings I’ve ever experienced—an alignment of cosmic elements that felt both fleeting and eternal.Credit: Xingyang Cai / 2025 Milky Way Photographer of the Year Daniel Zafra Portill “Diamond Beach Emerald Sky”Great Ocean Road, AustraliaWith a clear night forecast and the Milky Way core returning for 2025, I set out to explore the Great Ocean Road. After a few setbacks—such as a failed composition and getting the car stuck on a sandy track—I almost gave up. However, I pushed on and found a great spot above the beach to capture the scene.The night was full of color, with Comet C/2024 G3 Atlas and a pink aurora in the early hours, followed by the Milky Way rising amid intense green airglow near dawn. Despite the challenges, the reward of this stunning image and the memory of the view made it all worthwhile.Credit: Brent Martin / 2025 Milky Way Photographer of the Year Daniel Zafra Portill

Photo Credit: NASA NASA data shows 20+ years of Antarctic ice loss, tracked by Tongji University Highlights Antarctica saw ice gain recently, but long-term loss trend continues NASA satellites show rising ice loss from 2002–2020 in Antarctica Recent gains driven by unusual precipitation, not climate reversal Advertisement Global warming and climate change have been subjects of major concern for a long time. One of the key indicators of this phenomenon is the melting of ice in the polar regions. Researchers from Tongji University in Shanghai have been using NASA satellite data to track changes in Antarctica's ice sheet over more than two decades. Their newest study states that despite the increase in global temperature, Antarctica has gained ice in recent years. However, it cannot be considered as a miraculous reversal in global warming because over these two decades, the overall trend is substantial ice loss. Most of the gains have been caused by unusual increased precipitation over Antarctica.About the New studyAccording to the new study , NASA's Gravity Recovery And Climate Experiment (GRACE) and GRACE Follow-On satellites have been monitoring this ice sheet since 2002. The ice sheet covering Antarctica is the largest mass of ice on EarthThe satellite data revealed that the sheet experienced a sustained period of ice loss between 2002 and 2020. The ice loss accelerated in the latter half of that period, increasing from an average loss of about 81 billion tons (74 billion metric tons) per year between 2002 and 2010, to a loss of about 157 billion tons (142 billion metric tons) between 2011 and 2020, according to the study. However, the trend then shifted.The ice sheet gained mass from 2021 to 2023 at an average rate of about 119 billion tons (108 metric tons) per year. Four glaciers in eastern Antarctica also flipped from accelerated ice loss to significant mass gain.General Trend in global warmingClimate change doesn't mean that everywhere on Earth will get hotter at the same rate, so a single region will never tell the whole story of our warming world.Historically, temperatures over much of Antarctica have remained relatively stable, particularly compared to the Arctic. Antarctica's sea ice has also been much more stable relative to the Arctic, but that's been changing in recent years.  For the latest tech news and reviews, follow Gadgets 360 on X, Facebook, WhatsApp, Threads and Google News. For the latest videos on gadgets and tech, subscribe to our YouTube channel. If you want to know everything about top influencers, follow our in-house Who'sThat360 on Instagram and YouTube. Further reading: Antarctica, climate change, global warming, NASA GRACE, ice sheet, Tongji University, satellite data, polar ice, environmental science, climate study Gadgets 360 Staff The resident bot. If you email me, a human will respond. More Related Stories

Far before modern humans ever walked the Earth, our Homo erectus ancestors made arduous journeys to the present-day islands of Southeast Asia. Fossil remnants of H. erectus have been left all across this region, and now, two newly discovered skull fragments belonging to the species have added a new angle to their story. A study published in the journal Quaternary Environments and Humans reveals that the fossil remains were found after a marine sand extraction project in the Madura Strait, a stretch of water between the Indonesian islands of Java and Madura. By examining the fossils, archaeologists have opened a window into the lives of H. erectus who took advantage of low sea levels to spread across a now-submerged landmass 140,000 years ago. H. erectus Fossils on JavaAfter leaving Africa nearly 2 million years ago, H. erectus trekked all the way through Asia and eventually hit the Southeast Asian islands closer to 1.5 million years ago. Fast-forward to the late 19th century, and the first set of H. erectus fossils was found by Dutch scientist Eugène Dubois on Java, enshrined in archaeological history as the Java Man. But with Java surrounded by water in modern times, one may wonder, how did H. erectus land there in the first place? In the ancient past, this part of the world was much different than it is today. Millions of years ago, a landmass called Sundaland connected islands like Bali, Borneo, Java, and Sumatra. Sundaland was exposed during glacial periods when sea levels were low, forming a land bridge that paved the way for human migration flows at various points in history. This is how H. erectus and other species could reach Java. Rare Vertebrate FossilsThe new fossils shed light on Javanese H. erectus much later in their existence, around 140,000 years ago. Researchers involved with the study say that vertebrate fossils have never been found in the area that was once Sundaland, now submerged in the ocean. “This makes our discoveries truly unique,” said Harold Berghuis, an archaeologist at Leiden University, the Netherlands, in a statement. “The fossils come from a drowned river valley, which filled up over time with river sand. We have been able to date the material to approximately 140,000 years ago. That was the penultimate glacial period. Large parts of the northern hemisphere were covered by glaciers, and so much water on Earth was stored in ice caps that the global sea level was 100 metres lower than today.”The fossils show that H. erectus living on Java at the time dispersed throughout the lowlands of Sundaland when the sea level had receded enough. They would have traveled along river systems such as the Brantas and Solo Rivers, finding edible plants and shellfish. Read More: Who Was Homo Soloensis, the “Solo Man?”The Extinction of H. erectusThe researchers say that Javanese H. erectus hunted bovids (the family that includes cattle and buffalo), and potentially learned hunting practices through contact with more modern human species living on the Asian mainland. The final survivors of the entire H. erectus population were living in Java at the time of their death. Homo erectus soloensis (or the Solo Man), a subspecies of H. erectus, is believed to have lived along the Solo River from around 117,000 years to 108,000 years ago, marking the last known record of H. erectus. The extinction of the species may have occurred as a result of a changing climate that caused Java to morph from an open woodland environment into a rainforest.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:Britannica. Java manJack Knudson is an assistant editor at Discover with a strong interest in environmental science and history. Before joining Discover in 2023, he studied journalism at the Scripps College of Communication at Ohio University and previously interned at Recycling Today magazine.

36 fossil fragments from vertebrate animals were documented by researchers. Credit: Quaternary Environments and Humans Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday. For years, archeologists assumed the ancient Homo erectus population that lived on present-day Java existed in general isolation from nearby island relatives. However, a pair of fossilized skull fragments recently found off the Javanese coast are helping experts recontextualize the lives of the region’s H. erectus populations as they existed around 140,000 years ago. According to a study published May 15 in the journal Quaternary Environments and Humans, life for the Javanese H. erectus wasn’t always as lonely as we thought. Today, Indonesia consists of multiple islands between Asia and Australia, but that hasn’t always been the case. Beginning roughly 2.6 million years ago, the larger area has occasionally existed during periods of lower ocean levels as a larger, unified lowland landmass known as Sundaland. While H. erectus fossils have previously been found on Java itself, none were known to exist further outward in areas like the Madura Strait, which separates the islands of Madura from Central Java. A: The Sunda Shelf of Southeast Asia, with the Indonesian archipelago. Box indicates the position of map B. B: Eastern Java, the Madura Strait, the Solo River, Surabaya and other sites mentioned in the text. Box indicates position of map C. C: The Madura Strait north of Surabaya, with the sand extraction area and the BMS land reclamation. Map data: GEBCO and ALOS / Credit: Quaternary Environments and Humans That all changed thanks to over 176.5 million cubic feet of sand. The massive amount of sediment was dredged over 2014 to 2015 as part of an Indonesia land reclamation project, but it soon became clear that the sand also contained valuable historical remains. Scouring the material ultimately yielded around 6,000 fossil specimens from ancient fish, reptiles, and mammals–including the unexpected pair of H. erectus skull fragments. According to Harold Berghuis, study co-author and an archeologist at Leiden University in the Netherlands, their team’s discoveries are “truly unique.” “The fossils come from a drowned river valley, which filled up over time with river sand [dating to] approximately 140,000 years ago,” he said in an accompanying statement. Berghuis described that era as the “penultimate glacial period.” Earth’s Northern Hemisphere was so populated with glaciers, that the global sea level averaged nearly 1,100 feet lower than it does today. Because of this, Sundaland in the time of H. erectus greatly resembled the African savannah of today—largely dry grassland broken up by major rivers surrounded by narrow strips of forests. “Here they had water, shellfish, fish, edible plants, seeds and fruit all year round,” said Berghuis. Sundaland also featured a variety of animals, including multiple species of elephants, rhinos, and crocodiles. Strikingly, the bones the team found even have evidence of butchery by H. erectus. “Among our new finds are cut marks on the bones of water turtles and large numbers of broken bovid bones, which point to hunting and consumption of bone marrow,” Berghuis added. While this contrasts with earlier Javanese H. erectus populations, it had previously been documented in more modern human species who lived on the Asian mainland. According to the study’s authors, this indicates that Sundaland’s H. erectus may have learned those techniques from them. “This suggests there may have been contact between these hominin groups, or even genetic exchange,” theorized Berghuis.

An environment conference opened in Nepal on Friday to discuss global climate change, including the impact on the highest Himalayan peaks where snow and ice are melting.The three-day conference in Kathmandu titled, “Climate Change, Mountains and the Future of Humanity,” is expected to include discussions of critical climate issues.“From the lap of Sagarmatha (Everest), the world’s highest peak, we send this message loud and clear that to protect the mountains is to protect the planet. To protect the mountains is to protect our seas. To protect the mountains is to protect humanity itself,” Nepal Prime Minister Khadga Prasad Oli told participants at the opening meeting.Nepal is home to eight of the tallest mountains in the world including Mount Everest. A high level of glaciers melting in the Himalayan mountains because of global warming has raised signficant concerns. Melting snow and ice have exposed the mountains and increased the risk of rock slides, landslides and avalanches.Scientists have warned the Himalayan mountains could lose up to 80% of their glaciers if the Earth warms in coming decades or centuries. They say flash floods and avalanches also could become more likely in coming years, in part because of climate change.“The tragedy is that the Himalayas are facing an unprecedented stress test in real time today, exposing not only the fragile nature of our mountain ecosystems but also a glaring evidence of the lack of meaningful global climate action,” Nepal Foreign Minister Arzu Rana Deuba said. “As a mountainous country with high disaster risk vulnerability, Nepal faces a stark predicament.”Nepal has experienced a series of severe weather events in the recent past with devastating impacts on people and their livelihoods, Deuba said.“Floods and glacial lake outbursts have caused large-scale destruction and damage, and droughts, water scarcity and forest fires have brought untold suffering to the people across the country,” she said.Ministers from neighboring India, Bhutan, and Maldives are attending the conference.Organizers have said they intend to publish a Kathmandu declaration after the discussions end Sunday. —Binaj Gurubacharya, Associated Press

The Land Beneath the Biggest U.S. Cities Is Sinking, Finds New Analysis of Satellite Data Largely due to groundwater pumping and shifting of land after the last ice age, major urban areas are subsiding, which could destabilize buildings or worsen flooding Houston is the fastest-sinking of the 28 most populated U.S. cities, according to a new study that examined the urban areas through satellite observations. The Texas city got most of its water from the ground in the 1950s to ’70s, which led to subsidence. Art Wager via Getty Images The 28 most populous cities in the United States are all sinking to some degree, according to a new study that highlights the vulnerability of the roads and buildings in metropolises like New York, Houston and Seattle. In 25 of those 28 cities, at least two-thirds of the land area is sinking, per the research, and most of that subsidence is caused by pumping groundwater. The team’s findings were published in the journal Nature Cities last week. “As cities continue to grow, we will see more cities expand into subsiding regions,” says Leonard Ohenhen, the study’s lead author and a researcher at Columbia University, in a statement. “Over time, this subsidence can produce stresses on infrastructure that will go past their safety limit.” The researchers used satellite data collected between 2015 and 2021 to determine the rising and falling of land across major cities. “By comparing multiple images taken over time from the same area, we can detect tiny vertical movements of the ground, down to a few millimeters per year,” explains Manoochehr Shirzaei, a study co-author and geophysicist at Virginia Tech, to James Woodford at New Scientist. “It’s like taking a high-resolution time-lapse of Earth’s surface and watching how it rises or sinks over time.” Across the country, 80 percent of the sinkage is associated with removing groundwater for drinking and agriculture—and the researchers don’t see the problem getting better in the near future. “The usage of groundwater is not going to decline,” Ohenhen tells Kasha Patel and Naema Ahmed at the Washington Post. “In most places, you are not going to tell people to stop extracting groundwater, because that may be the only available resource for a particular region or city.” Researchers pinpointed the rate of sinking across major U.S. cities. This map shows the level of vertical land motion in the nation's most populated urban areas. Columbia Climate School Houston is the fastest-sinking city the team studied, largely for that reason—in the 1950s to ’70s, nearly all of its water came from the ground, says Bob Wang, a geophysicist at the University of Houston, to the New York Times’ Mira Rojanasakul. And while mitigation efforts slowed subsidence in the city’s center, people continued to pump water from below as the urban area expanded. Now, 42 percent of Houston’s land area is sinking faster than five millimeters (0.2 inches) per year, and 12 percent of it is sinking faster than ten millimeters (0.4 inches) per year. For other cities along the East Coast and Great Lakes area, such as New York, Philadelphia and Washington, D.C., the sinking primarily comes as the land slowly settles after the melting of glaciers from the last ice age. This phenomenon, which makes the ground rise in some areas and sink in others, is called glacial isostatic adjustment. “During the last ice age, these areas were covered by massive ice sheets. The sheer weight of the ice pushed down on Earth’s crust, like sitting on a memory foam mattress,” explains Shirzaei to New Scientist. When the ice melted, the pressure on the Earth’s surface was lifted, and the crust that was beneath it started to rise. But this rebound isn’t happening evenly across all regions, adds Shirzaei. In some areas, “the land is still sinking rather than rising, because they’re near the forebulge,” he says to New Scientist, “a zone that had been pushed up by the weight of the ice nearby and is now collapsing.” Shifting land—especially if it happens unevenly—can lead to destabilized structures and flooding hazards. Because of those risks, the team hopes their study creates a push toward damage mitigation efforts, per the statement. In cities susceptible to tilting, that can look like retrofitting existing buildings, implementing new building codes and limiting construction in the most vulnerable areas. To help with flooding, municipalities can implement land raising, enhance their draining systems and build more green infrastructure, like artificial wetlands. “Having detailed maps of ground movement as well as the information of what causes it can aid in designing policies,” says Pejman Tahmasebi, a subsidence researcher at the Colorado School of Mines who was not involved in the study, to the Washington Post. “We should start talking about those solutions right now,” adds Ohenhen to the Washington Post. “This problem is always only going to increase as we progress into the future.” Get the latest stories in your inbox every weekday.

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Scientists bamboozled by "ice piracy" where non-living glaciers are "stealing" ice Sayan Sen Neowin @ssc_combater007 · May 15, 2025 16:52 EDT Image by Tobias Bjørkli via PexelsScientists have spotted a surprising change in Antarctica—one glacier is pulling ice away from another in a process researchers call "ice piracy." This shift, once thought to take centuries or even millennia, has happened in less than 18 years, according to a new study from the University of Leeds published in The Cryosphere on May 8. Using satellite data, researchers examined eight ice streams in the Pope, Smith, and Kohler (PSK) region of West Antarctica between 2005 and 2022. They found that seven of the streams had sped up, with Smith West Glacier showing the biggest increase at 87%. But Kohler West Glacier, in contrast, had slowed by 10%. The reason? Kohler West’s ice flow had shifted toward Kohler East Glacier, which was thinning and moving faster. Over time, this caused the ice divide between the Dotson and Crosson Ice Shelves to shift eastward, changing how much ice reaches these floating ice platforms. Dr. Heather Selley, the study's lead author, explained what's happening. “We think that the observed slowdown on Kohler West Glacier is due to the redirection of ice flow towards its neighbor—Kohler East. This is due to the large change in Kohler West’s surface slope, likely caused by the vastly different thinning rates on its neighboring glaciers.” Kohler East’s rapid movement pulls in ice from Kohler West, a process Selley described as "ice piracy." “We didn’t know ice streams could ‘steal’ ice from each over such a short period, so this is a fascinating discovery,” she said. The team used satellite tracking techniques to measure how fast the glaciers were moving by monitoring surface features like crevasses and rifts. They also studied ice thinning rates with data from the European Space Agency’s (ESA) CryoSat mission. The study was done in collaboration with the British Antarctic Survey (BAS) and the UK Centre for Polar Observation and Modelling (CPOM), with additional data from ESA, NASA, the Japan Aerospace Exploration Agency, and the Canadian Space Agency. Co-author Pierre Dutrieux, a climate researcher at BAS, explained why this matters. “This study provides an interesting demonstration of ice piracy, where flow into one glacier gradually switches to flow into another glacier, as the ocean melts the grounding zone and re-configures ice flow.” The shifting ice flow is affecting Dotson and Crosson Ice Shelves, two floating platforms that help stabilize Antarctica’s ice sheet. Dotson Ice Shelf is about 30 miles wide, roughly the distance from Leeds to York, while Crosson Ice Shelf spans about 40 miles—the distance from Leeds to Manchester. Both shelves have already lost a lot of ice in recent decades, and this new change could impact their stability even further. Professor Anna Hogg, a study co-author, described the consequences. “The changes in flow direction have substantially altered the ice mass flux into Dotson and Crosson Ice Shelves, likely playing an important role in maintaining Dotson and accelerating the deterioration of Crosson.” Sea levels are already rising, and Antarctica’s ice plays a key role in that process. Scientists estimate that more than 410 million people worldwide could be at risk from sea-level rise by 2100. Data shows that global sea levels have increased by more than 10 cm over the last decade, and shifting ice flow could make the situation worse. Dr. Martin Wearing, an ESA scientist, emphasized how critical satellite technology is for tracking polar changes. “This new study highlights the unique ability of satellites to provide both the temporal and spatial coverage required to assess change in the polar regions. Using data from Copernicus Sentinel-1 and ESA's Earth Explorer CryoSat, the team has revealed the complex evolution of ice flow in part of West Antarctica over the past few decades. Understanding these changing dynamics and what drives them is crucial for improved projections of future ice-sheet change and contributions to sea-level rise.” This research adds to growing concerns about Antarctica’s changing ice flow patterns and how they are influenced by ocean warming, changes in air temperature, and snowfall variations. By showing that glaciers can redirect their ice flow much faster than expected, scientists are gaining new insights into how Antarctica’s ice sheet might continue changing—and what that could mean for the rest of the planet. Source: University of Leeds, The Cryosphere This article was generated with some help from AI and reviewed by an editor. Tags Report a problem with article Follow @NeowinFeed

On a crisp morning in early April, Dan McEvoy and Bjoern Bingham cut clean lines down a wide run at the Heavenly Ski Resort in South Lake Tahoe, then ducked under a rope line cordoning off a patch of untouched snow.  They side-stepped up a small incline, poled past a row of Jeffrey pines, then dropped their packs.  The pair of climate researchers from the Desert Research Institute (DRI) in Reno, Nevada, skied down to this research plot in the middle of the resort to test out a new way to take the temperature of the Sierra Nevada snowpack. They were equipped with an experimental infrared device that can take readings as it’s lowered down a hole in the snow to the ground. The Sierra’s frozen reservoir provides about a third of California’s water and most of what comes out of the faucets, shower heads, and sprinklers in the towns and cities of northwestern Nevada. As it melts through the spring and summer, dam operators, water agencies, and communities have to manage the flow of billions of gallons of runoff, storing up enough to get through the inevitable dry summer months without allowing reservoirs and canals to flood. The need for better snowpack temperature data has become increasingly critical for predicting when the water will flow down the mountains, as climate change fuels hotter weather, melts snow faster, and drives rapid swings between very wet and very dry periods.  In the past, it has been arduous work to gather such snowpack observations. Now, a new generation of tools, techniques, and models promises to ease that process, improve water forecasts, and help California and other states safely manage one of their largest sources of water in the face of increasingly severe droughts and flooding.Observers, however, fear that any such advances could be undercut by the Trump administration’s cutbacks across federal agencies, including the one that oversees federal snowpack monitoring and survey work. That could jeopardize ongoing efforts to produce the water data and forecasts on which Western communities rely. “If we don’t have those measurements, it’s like driving your car around without a fuel gauge,” says Larry O’Neill, Oregon’s state climatologist. “We won’t know how much water is up in the mountains, and whether there’s enough to last through the summer.” The birth of snow surveys The snow survey program in the US was born near Lake Tahoe, the largest alpine lake in North America, around the turn of the 20th century.  Without any reliable way of knowing how much water would flow down the mountain each spring, lakefront home and business owners, fearing floods, implored dam operators to release water early in the spring. Downstream communities and farmers pushed back, however, demanding that the dam was used to hold onto as much water as possible to avoid shortages later in the year.  In 1908, James Church, a classics professor at the University of Nevada, Reno, whose passion for hiking around the mountains sparked an interest in the science of snow, invented a device that helped resolve the so-called Lake Tahoe Water Wars: the Mt. Rose snow sampler, named after the peak of a Sierra spur that juts into Nevada. James Church, a professor of classics at the University of Nevada, Reno, became a pioneer in the field of snow surveys.COURTESY OF UNIVERSITY OF NEVADA, RENO It’s a simple enough device, with sections of tube that screw together, a sharpened end, and measurement ticks along the side. Snow surveyors measure the depth of the snow by plunging the sampler down to the ground. They then weigh the filled tube on a specialized scale to calculate the water content of the snow.  Church used the device to take measurements at various points across the range, and calibrated his water forecasts by comparing his readings against the rising and falling levels of Lake Tahoe.  It worked so well that the US began a federal snow survey program in the mid-1930s, which evolved into the one carried on today by the Department of Agriculture’s Natural Resources Conservation Service (NRCS). Throughout the winter, hundreds of snow surveyors across the American West head up to established locations on snowshoes, backcountry skis, or snowmobiles to deploy their Mt. Rose samplers, which have barely changed over more than a century.  In the 1960s, the US government also began setting up a network of permanent monitoring sites across the mountains, now known as the SNOTEL network. There are more than 900 stations continuously transmitting readings from across Western states and Alaska. They’re equipped with sensors that measure air temperature, snow depth, and soil moisture, and include pressure-sensitive “snow pillows” that weigh the snow to determine the water content.  The data from the snow surveys and SNOTEL sites all flows into snow depth and snow water content reports that the NRCS publishes, along with forecasts of the amount of water that will fill the streams and reservoirs through the spring and summer. Taking the temperature None of these survey and monitoring programs, however, provide the temperature throughout the snowpack.  The Sierra Nevada snowpack can reach more than 6 meters (20 feet), and the temperature within it may vary widely, especially toward the top. Readings taken at increments throughout can determine what’s known as the cold content, or the amount of energy required to shift the snowpack to a uniform temperature of 32˚F.  Knowing the cold content of the snowpack helps researchers understand the conditions under which it will begin to rapidly melt, particularly as it warms up in the spring or after rain falls on top of the snow. If the temperature of the snow, for example, is close to 32˚F even at several feet deep, a few warm days could easily set it melting. If, on the other hand, the temperature measurements show a colder profile throughout the middle, the snowpack is more stable and will hold up longer as the weather warms. Bjoern Bingham, a research scientist at the Desert Research Institute, digs at snowpit at a research plot within the Heavenly Ski Resort, near South Lake Tahoe, California. JAMES TEMPLE The problem is that taking the temperature of the entire snowpack has been, until now, tough and time-consuming work. When researchers do it at all, they mainly do so by digging snow pits down to the ground and then taking readings with probe thermometers along an inside wall.There have been a variety of efforts to take continuous remote readings from sensors attached to fences, wires, or towers, which the snowpack eventually buries. But the movement and weight of the dense shifting snow tends to break the devices or snap the structures they’re assembled upon. “They rarely last a season,” McAvoy says. Anne Heggli, a professor of mountain hydrometeorology at DRI, happened upon the idea of using an infrared device to solve this problem during a tour of the institute’s campus in 2019, when she learned that researchers there were using an infrared meat thermometer to take contactless readings of the snow surface. In 2021, Heggli began collaborating with RPM Systems, a gadget manufacturing company, to design an infrared device optimized for snowpack field conditions. The resulting snow temperature profiler is skinny enough to fit down a hole dug by snow surveyors and dangles on a cord marked off at 10-centimeter (4-inch) increments. Bingham and Daniel McEvoy, an associate research professor at the Desert Research Institute, work together to take temperature readings from inside the snowpit as well as from within the hole left behind by a snow sampler.JAMES TEMPLE At Heavenly on that April morning, Bingham, a staff scientist at DRI, slowly fed the device down a snow sampler hole, calling out temperature readings at each marking. McEvoy scribbled them down on a worksheet fastened to his clipboard as he used a probe thermometer to take readings of his own from within a snow pit the pair had dug down to the ground. They were comparing the measurements to assess the reliability of the infrared device in the field, but the eventual aim is to eliminate the need to dig snow pits. The hope is that state and federal surveyors could simply carry along a snow temperature profiler and drop it into the snowpack survey holes they’re creating anyway, to gather regular snowpack temperature readings from across the mountains. In 2023, the US Bureau of Reclamation, the federal agency that operates many of the nation’s dams, funded a three-year research project to explore the use of the infrared gadgets in determining snowpack temperatures. Through it, the DRI research team has now handed devices out to 20 snow survey teams across California, Colorado, Idaho, Montana, Nevada, and Utah to test their use in the field and supplement the snowpack data they’re collecting. The Snow Lab The DRI research project is one piece of a wider effort to obtain snowpack temperature data across the mountains of the West. By early May, the snow depth had dropped from an April peak of 114 inches to 24 inches (2.9 meters to 0.6 meters) at the UC Berkeley Central Sierra Snow Lab, an aging wooden structure perched in the high mountains northwest of Lake Tahoe.Megan Mason, a research scientist at the lab, used a backcountry ski shovel to dig out a trio of instruments from what was left of the pitted snowpack behind the building. Each one featured different types of temperature sensors, arrayed along a strong polymer beam meant to hold up under the weight and movement of the Sierra snowpack.   She was pulling up the devices after running the last set of observations for the season, as part of an effort to develop a resilient system that can survive the winter and transmit hourly temperature readings. The lab is working on the project, dubbed the California Cold Content Initiative, in collaboration with the state’s Department of Water Resources. California is the only western state that opted to maintain its own snow survey program and run its own permanent monitoring stations, all of which are managed by the water department.  The plan is to determine which instruments held up and functioned best this winter. Then, they can begin testing the most promising approaches at several additional sites next season. Eventually, the goal is to attach the devices at more than 100 of California’s snow monitoring stations, says Andrew Schwartz, the director of the lab.The NRCS is conducting a similar research effort at select SNOTEL sites equipped with a beaded temperature cable. One such cable is visible at the Heavenly SNOTEL station, next to where McEvoy and Bingham dug their snow pit, strung vertically between an arm extended from the main tower and the snow-covered ground.  DRI’s Bjoern Bingham feeds the snow temperature profiler, an infrared device, down a hole in the Sierra snowpack.JAMES TEMPLE Schwartz said that the different research groups are communicating and collaborating openly on the projects, all of which promise to provide complementary information, expanding the database of snowpack temperature readings across the West. For decades, agencies and researchers generally produced water forecasts using relatively simple regression models that translated the amount of water in the snowpack into the amount of water that will flow down the mountain, based largely on the historic relationships between those variables.  But these models are becoming less reliable as climate change alters temperatures, snow levels, melt rates, and evaporation, and otherwise drives alpine weather patterns outside of historic patterns. “As we have years that scatter further and more frequently from the norm, our models aren’t prepared,” Heggli says. Plugging direct temperature observations into more sophisticated models that have emerged in recent years, Schwartz says, promises to significantly improve the accuracy of water forecasts. That, in turn, should help communities manage through droughts and prevent dams from overtopping even as climate change fuels alternately wetter, drier, warmer, and weirder weather. About a quarter of the world’s population relies on water stored in mountain snow and glaciers, and climate change is disrupting the hydrological cycles that sustain these natural frozen reservoirs in many parts of the world. So any advances in observations and modeling could deliver broader global benefits. Ominous weather There’s an obvious threat to this progress, though. Even if these projects work as well as hoped, it’s not clear how widely these tools and techniques will be deployed at a time when the White House is gutting staff across federal agencies, terminating thousands of scientific grants, and striving to eliminate tens of billions of dollars in funding at research departments.  The Trump administration has fired or put on administrative leave nearly 6,000 employees across the USDA, or 6% of the department’s workforce. Those cutbacks have reached regional NRCS offices, according to reporting by local and trade outlets. That includes more than half of the roles at the Portland office, according to O’Neill, the state climatologist. Those reductions prompted a bipartisan group of legislators to call on the Secretary of Agriculture to restore the positions, warning the losses could impair water data and analyses that are crucial for the state’s “agriculture, wildland fire, hydropower, timber, and tourism sectors,” as the Statesman Journal reported. There are more than 80 active SNOTEL stations in Oregon. The fear is there won’t be enough people left to reach all the sites this summer to replace batteries, solar panels, and drifting or broken sensors, which could quickly undermine the reliability of the data or cut off the flow of information.  “Staff and budget reductions at NRCS will make it impossible to maintain SNOTEL instruments and conduct routine manual observations, leading to inoperability of the network within a year,” the lawmakers warned. The USDA and NRCS didn’t respond to inquiries from MIT Technology Review.  DRI’s Daniel McEvoy scribbles down temperature readings at the Heavenly site.JAMES TEMPLE If the federal cutbacks deplete the data coming back from SNOTEL stations or federal snow survey work, the DRI infrared method could at least “still offer a simplistic way of measuring the snowpack temperatures” in places where state and regional agencies continue to carry out surveys, McAvoy says. But most researchers stress the field needs more surveys, stations, sensors, and readings to understand how the climate and water cycles are changing from month to month and season to season. Heggli stresses that there should be broad bipartisan support for programs that collect snowpack data and provide the water forecasts that farmers and communities rely on.  “This is how we account for one of, if not the, most valuable resource we have,” she says. “In the West, we go into a seasonal drought every summer; our snowpack is what trickles down and gets us through that drought. We need to know how much we have.”