A coalition of health and environmental groups is suing the Environmental Protection Agency, challenging the rescinding of a scientific finding that has been the central basis for U.S. action to regulate greenhouse gas emissions and fight climate change. A rule finalized by the EPA rescinded a 2009 government declaration known as the endangerment finding that determined that carbon dioxide and other greenhouse gases threaten public health and welfare. The Obama-era finding is the legal underpinning of nearly all climate regulations under the Clean Air Act for motor vehicles, power plants and other pollution sources that are heating the planet. The lawsuit filed Wednesday calls the EPA's action unlawful and says the finding supported common sense safeguards to cut climate pollution.

The Environmental Protection Agency has revoked a key scientific finding that supported U.S. regulations on greenhouse gas emissions. This decision rescinds a 2009 declaration that carbon dioxide and other gases endanger public health. EPA Administrator Lee Zeldin announced the move Thursday, calling it a major deregulatory action. Critics argue it undermines efforts to combat climate change and could lead to more pollution. Environmental groups are certain to challenge the action in court. The EPA also proposes delaying a Biden-era rule on vehicle emissions, which could impact the push for electric vehicles.

Scientists are criticizing two key documents from the Trump administration that challenge the idea that climate change endangers the public. The documents from the Environmental Protection Agency and Department of Energy argue that climate change's impact is unclear and that U.S. cuts to greenhouse gas emissions have little global effect. Most of the scientists who responded to questions from The Associated Press said the reports misuse or misinterpret their work. A common critique was that the documents cherry-pick information to downplay climate change's severity. When asked to grade the documents, those surveyed most frequently gave the work an F.

President Donald Trump's administration has proposed revoking a scientific finding that's long been the central basis for U.S. action to regulate greenhouse gas emissions and fight climate change. The proposed Environmental Protection Agency rule rescinds a 2009 declaration that determined carbon dioxide and other greenhouse gases endanger public health. The "endangerment finding" is the legal underpinning of a host of climate regulations under the Clean Air Act for motor vehicles, power plants and other pollution sources. EPA Administrator Lee Zeldin announced the proposed rule change on a podcast ahead of an official announcement set for Tuesday in Indiana. Three former EPA leaders say Zeldin's proposal would endanger the lives of millions of Americans.