"President Trump and congressional Republicans are poised to roll back a series of Obama-era worker safety regulations targeted by business groups, beginning Monday night with a vote by the Senate to kill a rule that required federal contractors to disclose and correct serious safety violations."

"A high-stakes legal battle between ExxonMobil and the New York attorney general's office is roiling around documents held by the company's auditors. Those documents, usually dry disclosures that hold little public interest, could afford a candid—and perhaps damaging—glimpse into Exxon's private calculations of the business risks posed by climate change."

"U.S. coal miner Peabody Energy Corp said on Monday it has agreed to set aside collateral to cover future mine cleanup costs as part of its bankruptcy reorganization plan, ending its controversial use of 'self-bonds.'"

"Rick Ostfeld and Felicia Keesing have been studying Lyme disease and ways to stop it for more than 20 years. The couple has come up with a way to predict how bad a Lyme season will be a full year in advance."

"For nearly 50 years, Oroville Dam has been the linchpin of a sprawling state plumbing system that draws water from wet Northern California to 25 million people and thousands of acres of farmland in the arid south. That changed Feb. 7 when a crater as large as a football field dropped out of the dam's concrete-lined spillway."

"For years, the Obama administration proposed cuts to a Pacific salmon recovery program — and for years, Congress ignored the request and fully funded the program within the National Oceanic and Atmospheric Administration."

"The White House is fiercely divided over President Trump’s campaign promise to 'cancel' the Paris agreement, the 2015 accord that binds nearly every country to curb global warming, with more moderate voices maintaining that he should stick with the agreement despite his campaign pledge."

"The Trump White House has wasted no time in targeting pro-climate policies, freezing energy-efficiency standards finalized during the last days of the Obama administration. Its “America First Energy Plan” makes no mention of renewable energy or energy efficiency, and it is focused on fossil fuels. But in 2012, Donald J. Trump, the businessman, played a different tune."