"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."

"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 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."

"A new Republican House bill proposes sweeping changes to US toxic chemical laws that would gut protections for consumers, workers and the environment, public health advocates mobilising against the legislation warn."

"President Donald Trump’s campaign to quash climate change policies notched its biggest win yet Thursday, as EPA eliminated the legal basis for regulations aimed at restricting greenhouse gas emissions from tailpipes and smokestacks that are heating the planet."

"Following three of the warmest years on record, as scientists reckon with climate tipping points and states and cities grapple with the escalating cost of extreme weather and more intense wildfires, the Trump administration this week is expected to formally eliminate the U.S. government’s role in controlling greenhouse gas pollution."

"A small group of conservative activists has worked for 16 years to stop all government efforts to fight climate change. Their efforts seem poised to pay off."

"Casey Means, nominated for U.S. surgeon general, left her surgical residency over seven years ago. She authored "Good Energy" and promotes metabolic health. Her confirmation was delayed after childbirth. A Washington Post review found she earned over $536,000 from wellness partnerships. Some experts worry her policies may lack evidence."

"A year ago, federal support for scientific research appeared to be crumbling. But thanks to Congress and several lawsuits, scientists’ worst fears haven’t come to pass."