"More than three dozen Democratic senators have begun an independent inquiry into the US Environmental Protection Agency (EPA) following a huge change in how the agency measures the health benefits of reducing air pollution that is widely seen as a major setback to US efforts to combat the climate crisis."

"Billions of American chestnut trees once covered the eastern United States. ... But by the 1950s, this venerable tree went functionally extinct, culled by a deadly airborne fungal blight and lethal root rot. A new study out Thursday in the journal Science provides hope for its revitalization, finding that the genetic testing of individual trees can reveal which are most likely to resist disease and grow tall, thus shortening how long it takes to plant the next, more robust, generation."

"Russia continues to bomb Ukraine’s fossil-fueled power plants, leaving much of the nation shivering during a brutal winter. But Ukraine’s new emphasis on developing decentralized power — from solar panels to wind turbines — is advancing an unexpected green energy transition."

"The US Supreme Court has set an April hearing in a closely watched case brought by Bayer that seeks to make the Environmental Protection Agency (EPA) the ultimate arbiter of warning labels on pesticides such as the company’s popular Roundup weed killer."

"A wastewater spill into the Potomac River that began last month now appears to be one of the largest in American history."

"A year ago, U.S. Health Secretary Robert F. Kennedy Jr. said he wanted to rebuild trust in federal health agencies, and vowed to employ “radical transparency” to do it. But many types of health information that steadily flowed from the government for years or decades has been delayed, deleted and in some cases stopped all together."

"President Donald Trump has nominated a hotel and food management executive to be director of the National Park Service."

"When one couple’s water turned toxic, state oil regulators delayed key tests that could find a source of contamination. The state didn’t tell the couple for over a month that tests showed their drinking water was contaminated with high levels of barium, which can cause heart problems."