"At a February 21 hearing, a U.S. District Court judge ruled that the Trump administration must either fork over documents showing how the U.S. Department of State reversed an earlier decision and ultimately came to approve the Keystone XL pipeline, or else provide a substantial legal reason for continuing to withhold them."

"A government watchdog group asked the Federal Election Commission on Thursday to investigate Interior Secretary Ryan Zinke's appearance at Virgin Islands Fundraiser, and it plans to request that Interior's Inspector General probe what it contends is his 'pattern of violations' of ethics regulations."

"One of the world's richest troves of Triassic-period fossils has been discovered in an area of Bears Ears National Monument that just lost its protected status, scientists announced Thursday. President Trump signed a proclamation in December that shrank the national monument by 85 percent."

"A pair of environmental groups representing public employees sued the Environmental Protection Agency (EPA) on Thursday, claiming officials failed to adequately take and maintain public records in violation of federal law."

"The Trump administration must start enforcing an Obama administration rule limiting methane leaks from oil and natural gas drilling on federal land, a court ruled."

"Federal officials must go back and review documents related to the disputed Keystone XL oil pipeline, under a Wednesday court ruling that came after environmentalists accused President Donald Trump’s administration of withholding details on the project’s approval."

"Two senior U.S. Geological Survey officials have stepped down after Interior Secretary Ryan Zinke asked that they provide his office with confidential data on the National Petroleum Reserve-Alaska before it was released to the general public."

"The chairman of the House Oversight Committee — in a prominent instance of Republican scrutiny of the Environmental Protection Agency under Scott Pruitt — demanded on Wednesday that the E.P.A. chief turn over documents related to his first-class travel at taxpayer expense."

"The president of a Tennessee state university, under fire for an academic study on truck emissions that was paid for by a local trucking company, has asked federal officials to disregard the study, at least for now, in its review of pollution regulations that could benefit the company."

"Industrial group 3M Co and Minnesota’s attorney general have agreed to settle a lawsuit over polluted groundwater, with the company agreeing to grant $850 million to the state for groundwater projects, the attorney’s office said on Tuesday."