Trump set to undo Obama's action against global warming

Moving forward with a campaign pledge to unravel former President Obama's sweeping plan to curb global warming, President Trump on Tuesday is set to sign an executive order that will suspend, rescind or flag for review more than a half-dozen measures in an effort to boost domestic energy production in the form of fossil fuels.
As part of the roll-back, Trump will initiate a review of the Clean Power Plan, which restricts greenhouse gas emissions at coal-fired power plants.
The regulation, which was the former president's signature effort to curb carbon emissions, has been the subject of long-running legal challenges by Republican-led states and those who profit from burning oil, coal and gas.
Trump, who has called global warming a "hoax" invented by the Chinese, has repeatedly criticized the power-plant rule and others as an attack on American workers and the struggling U.S. coal industry. The contents of the order were outlined to reporters in a sometimes tense briefing with a senior White House official, whom aides insisted speak without attribution, despite Trump's criticism of the use of unnamed sources.
The official at one point appeared to break with mainstream climate science, denying familiarity with widely publicized concerns about the potential adverse economic impacts of climate change, such as rising sea levels and more extreme weather.
In addition to pulling back from the Clean Power Plan, the administration will also lift a 14-month-old moratorium on new coal leases on federal lands.
The Obama administration had imposed a three-year moratorium on new federal coal leases in January 2016, arguing that the $1 billion-a-year program must be modernized to ensure a fair financial return to taxpayers and address climate change.
Trump accused his predecessor of waging a "war on coal" and boasted in a speech to Congress that he has made "a historic effort to massively reduce job-crushing regulations," including some that threaten "the future and livelihoods of our great coal miners."
The order will also chip away at other regulations, including scrapping language on the "social cost" of greenhouse gases. It will initiate a review of efforts to reduce the emission of methane in oil and natural gas production as well as a Bureau of Land Management hydraulic fracturing rule, to determine whether those reflect the president's policy priorities.
It will also rescind Obama-era executive orders and memoranda, including one that addressed climate change and national security and one that sought to prepare the country for the impacts of climate change.
The administration is still in discussion about whether it intends to withdraw from the Paris Agreement on climate change. But the moves to be announced Tuesday will undoubtedly make it more difficult for the U.S. to achieve its goals.
Trump's Environmental Protection Agency chief, Scott Pruitt, alarmed environmental groups and scientists earlier this month when he said he does not believe carbon dioxide is a primary contributor to global warming. The statement is at odds with mainstream scientific consensus and Pruitt's own agency.
The overwhelming majority of peer-reviewed studies and climate scientists agree the planet is warming, mostly due to man-made sources, including carbon dioxide, methane, halocarbons and nitrogen oxide.
The official who briefed reporters said the president does believe in man-made climate change.
Former EPA Administrator Gina McCarthy accused the Trump administration of wanting "us to travel back to when smokestacks damaged our health and polluted our air, instead of taking every opportunity to support clean jobs of the future."
"This is not just dangerous; it's embarrassing to us and our businesses on a global scale to be dismissing opportunities for new technologies, economic growth, and US leadership," she said in a statement.
Michael Oppenheimer, a climate scientist at Princeton University, told The New York Times that Trump’s order signals that the U.S. will fall short of its pledge to cut emissions of about 26 percent by 2025. He said Trump’s order “sends a signal to other countries that they might not have to meet their commitments—which would mean that the world would fail to stay out of the climate danger zone.”