"Wildfires churning out dense plumes of smoke as they scorch huge swaths of the U.S. West Coast have exposed millions of people to hazardous pollution levels, causing emergency room visits to spike and potentially thousands of deaths among the elderly and infirm, according to an Associated Press analysis of pollution data and interviews with physicians, health authorities and researchers."

"Wildfires leave behind more than scorched earth and destroyed homes: Rising smoke plumes can contain chemicals that disperse not only into the air but in soil, water, indoor dust, and even wildlife."

"Prosecutions of environmental crimes have “plummeted” during the Trump administration, according to a new report."

"The emissions and methane leaks from new gas plants zero out the CO2 cuts achieved from closing coal plants, a peer-reviewed analysis found."

"Mario Molina, who shared a Nobel Prize in chemistry for demonstrating the threat to the ozone layer posed by CFCs, chemical compounds often found in refrigerants and hair sprays and whose use was later curtailed by a landmark international accord, died Oct. 7 at his home in Mexico City. He was 77."

"Ariel Kinzinger had a headache. Clark Brinkman coughed and wheezed. LaNesha Collins, feeling physically fine, was frustrated by another day mostly trapped inside looking out at a sepia sun, in Portland, Ore."

"A three-judge panel appeared divided Thursday on President Trump’s effort to repeal his predecessor’s regulations on planet-warming emissions from the power sector and replace them with far weaker controls."

"Emissions of nitrous oxide, a climate super-pollutant hundreds of times more potent than carbon dioxide, are rising faster than previously thought—at a rate that not only threatens international targets to limit global warming, but is consistent with a worst-case trajectory for climate change, a new study suggests."

"The Centers for Disease Control and Prevention now says the coronavirus can be spread through airborne particles that can linger in the air "for minutes or even hours" — even among people who are more than 6 feet apart."