This story was originally published by Grist and is reproduced here as part of the Climate Desk collaboration. Within hours of being sworn into office on Monday, President Donald Trump announced a spate of executive orders and policies to boost oil and gas production, roll back environmental protections, withdraw from the Paris climate accord, and undo environmental justice initiatives enacted by former President Joe Biden.Trump has called climate change a hoax, and appointed fossil fuel industry executives and climate skeptics to his Cabinet. His first-day actions represent a complete remaking of the countrys climate agenda, and set the tone for his administrations approach to energy and the environment over the next four years. RelatedDrill, baby, drillAmong the most significant actions Trump took Monday was declaring an energy emergency, which he framed as part of his effort to rein in inflation and reduce the cost of living. He pledged to use all necessary resources to build critical infrastructure, an unprecedented move that could grant the White House greater authority to expand fossil fuel production. He also signed an executive order to encourage energy exploration and production on federal lands and waters, and another expediting permitting and leasing in Alaska, including in the Arctic National Wildlife Refuge. We will have the largest amount of oil and gas of any country on Earth, and we are going to use it, Trump said during his inaugural address. We are going to drill, baby, drill.The US Strategic Petroleum Reserve can store 714 million barrels of crude oil, but currently holds about 395 million. Under his administration, he said, the cache will be filled up again right to the top. He also said the country will export energy all over the world.We will be a rich nation again, he said, standing inside the Capitol Rotunda, and it is that liquid gold under our feet that will help.Richard Klein, a senior research fellow for the international nonprofit Stockholm Environment Institute, noted that fossil fuel companies extracted record-high amounts of oil and gas during the Biden administration. Even if it is technologically possible to boost production further, its unclear whether that will reduce prices. Dan Kammen, a professor of energy at the University of California Berkeley, said it is a direct falsehood that increasing fossil fuel extraction would drive down inflation. He agreed that the US should declare a national energy emergency but for reasons exactly the opposite of what Trump had in mind. We need to quickly move to clean energy, to invest in new companies across the US, Kammen told Grist.Exiting the Paris agreement (again)Trump delivered on his promise to once again withdraw from the 2015 Paris climate agreement, the United Nations pact agreed upon by 195 countries to limit global warming, which the new president referred to on Monday as a rip-off. In addition to signing an executive order saying the US would leave the agreement titled Putting America First in International Environmental Agreements Trump also signed a letter to the United Nations to set the departure in motion. Due to the rules governing the accord, it will take one year to formally withdraw, meaning US negotiators will participate in the next round of talks in Brazil at the end of the year. By this time next year, however, the US could join Iran, Libya, and Yemen as the only nations that arent part of the accord. It simply makes no sense for the United States to voluntarily give up political influence and pass up opportunities to shape the exploding green energy market, Ani Dasgupta, president and CEO of the nonprofit World Resources Institute, said in a statement. Only two in 10 Americans support quitting the Paris agreement, according to a poll by the Associated Press.Trumps announcement came just 10 days after the National Oceanic and Atmospheric Administration declared 2024 Earths hottest year on record, one marked by life-threatening heat waves, wildfires, and flooding around the world. Experts say things will only get worse unless the US and other countries do more to limit greenhouse gas emissions. Much of the very fabric of life on Earth is imperiled, climate scientists wrote last October. They noted then, even before Trumps election, that global policies were expected to cause temperatures to climb 2.7 degrees Celsius (6.9 degrees Fahrenheit) by 2100. One analysis by Carbon Brief estimated that a second Trump administration would result in an extra 4 billion metric tons of climate pollution, negating all of the emissions savings from the global deployment of clean energy technologies over the past five years twice over.Reversing course on electric vehicles Trump also took action to revoke the electric vehicle mandate, in keeping with his campaign promise to support autoworkers.In other words, youll be able to buy the vehicle of your choice, he said during his inaugural address even though there is no national mandate requiring the sale of electric vehicles and consumers are free to purchase any vehicle of their liking. The Biden administration did promote the technology by finalizing rules that limit the amount of tailpipe pollution over time so that electric vehicles make up the majority of automobiles sold by 2032. Under Joe Biden, the US also launched a $7,500 tax credit for consumer purchases of EVs manufactured domestically and planned to funnel roughly $7.5 billion toward building charging infrastructure across the country. Rolling back incentives to build electric vehicles in the United States is going to cost jobs as well as raise the price of travel, said Costa Samaras, a professor of civil and environmental engineering at Carnegie Mellon University who served as a senior policy leader in the Biden White House. Fueling up an electric vehicle costs between one-third and one-half as much as driving on gasoline, not to mention the benefits for reducing air pollution. Ultimately, to lower the price of energy for US consumers, we need to diversify the sources of energy that were using and ensure that these are clean, affordable, and reliable.Rescinding environmental justice initiativesTrump signed a single executive order undoing nearly 80 Biden administration initiatives, including rescinding a directive to federal agencies to incorporate environmental justice into their missions. The Biden-era policy protected communities overburdened by pollution and directed agencies to work more closely with them. That move was part of a broader push that Trump described in his inaugural address as an attempt to create a color-blind society by stopping the government from trying to socially engineer race and gender into every aspect of public and private life. Klein said the objective was embarrassing. Kammen said it was a huge mistake to move away from environmental justice priorities.Blocking new wind energy Trump officially barred new offshore wind leases and will review federal permitting of wind projects, making good on a promise to end leasing to massive wind farms that degrade our natural landscapes and fail to serve American energy consumers. The move is likely to be met with resistance from members of his own party. The top four states for wind generation Texas, Iowa, Oklahoma, and Kansas are solidly red, and unlikely to acquiesce. Even Trumps pick for Interior secretary, Doug Burgum, refused to disavow wind power during a hearing last week, saying he would pursue an all of the above energy strategy.Many state and local policymakers, including the members of America Is All In, a climate coalition made up of government leaders and businesses from all 50 states, pledged to take up the mantle of climate action in the absence of federal leadership.Regardless of the federal governments actions, climate mayors are not backing down on our commitment to the Paris Agreement, said Phoenix Mayor Kate Gallego, in a statement. 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