"Fires in Brazil’s Amazon increased 13% in the first nine months of the year compared with a year ago, as the rainforest region experiences its worst rash of fires in a decade, data from space research agency Inpe showed on Thursday."

"The Environmental Protection Agency (EPA) on Thursday finalized a rule that could reclassify many “major” sources of pollution as minor ones, allowing facilities to abide by less-stringent emissions standards for dangerous substances such as mercury, lead and arsenic."

"California will ban the sale of new gasoline-powered cars to combat climate change starting in 2035, a move that could help reshape the nation’s automobile market and its output of greenhouse gases."

"Power plants, refineries, and other industrial sources may now be able to avoid stringent pollution controls if the toxic air particles they emit fall below a mandated legal threshold."

"Asphalt—a petroleum product used on roads and roofs—is a significant source of harmful chemicals that end up contributing to ozone and particulate matter pollution, according to a study published today in Science Advances."

"The Centers for Disease Control and Prevention posted guidance Friday evening saying that aerosol transmission might be one of the "most common" ways the coronavirus is spreading — and then took the guidance down on Monday."

"An international team of prominent scientists has published what they say is the most comprehensive study to date calculating the complex climate impact of aviation emissions, reaffirming that contrail clouds produce more warming than carbon dioxide."

"The wildfires blazing in the West could hinder developing lungs, worsen asthma and even lead to the condition in those who don’t have it but are genetically disposed to it."

"SAN FRANCISCO — Ian MacDonald, a 14-year-old in Portland, Ore., got a treat from his parents the other day. He was allowed to go outside.