"In 2015, the top toxicologist for the state of Texas, Michael Honeycutt, was interviewed on Houston Public Radio. At the time, the Environmental Protection Agency was pushing for tighter limits on ozone, a type of air pollution that is hazardous for people with asthma and other respiratory diseases."

"A federal judge in San Francisco ordered President Trump’s administration on Thursday to end a one-year delay on rules developed by the Obama administration to combat climate change by tightening energy-efficiency standards for portable air conditioners, building heaters and other appliances."

"The gravel parking lot at the Fitzgerald family’s truck dealership here in central Tennessee was packed last week with shiny new Peterbilt and Freightliner trucks, as well as a steady stream of buyers from across the country. But there is something unusual about the big rigs sold by the Fitzgeralds: They are equipped with rebuilt diesel engines that do not need to comply with rules on modern emissions controls."

"Leading House Democrats want the Environmental Protection Agency’s (EPA) internal watchdog to look into EPA head Scott Pruitt’s premium-class flights on the taxpayer’s dime."

"On January 26, after serving as a scientific advisor to the Environmental Protection Agency for about two years, Robyn Wilson received her first note from EPA Administrator Scott Pruitt thanking her for her service—which was officially over. She had one year left in her term."

"A settlement agreement between U.S. EPA and Syngenta Seeds LLC to resolve violations of pesticide regulations at a Hawaii farm includes a civil penalty that's significantly lower than what the Obama administration had sought."

"The Trump administration’s stance on climate change became a little less clear this week."

"How a group of five activists called the Valve Turners decided to fight global warming by doing whatever it takes."

"While the Trump administration offered a tepid vision for the future of the Land and Water Conservation Fund in its fiscal 2019 budget proposal — slashing the program's acquisition budget by 95 percent — the Interior Department insisted Secretary Ryan Zinke remains a steadfast supporter."

"Three environmental groups teamed up to sue the Trump administration on Tuesday for allowing oil companies to dump leftover waste from drilling and fracking into the Gulf of Mexico."