"A federal appeals court on Friday appeared highly skeptical that the Trump administration had adequately weighed the safety and environmental risks of a rule authorizing rail transport of liquefied natural gas — even as judges questioned whether they should issue a decision yet on the suspended regulation."

"The White House enacted steep increases in tariffs Friday that could quadruple the price of electric vehicles from China and double fees on imported solar cells, upping the trade war between the U.S. and the Asian manufacturing giant."

"The Vaux's Swift is a tiny bird – some people call it “a cigar with wings.” But every fall these little birds make a big trip, from summer breeding grounds in the Pacific Northwest down to their winter home in Central and South America. Along the way, many of them roost as a big flock in chimneys up and down the west coast. And their murmurations in the air – and simultaneously dive together into chimneys – are so spectacular that they draw crowds."

"Officials warned people to stay out of the ocean at several beaches in Maryland, Delaware and Virginia after they said medical waste, including hypodermic needles, washed ashore. The source of the waste was under investigation."

"A massive pipeline fire sent a pillar of flame towering over some Houston suburbs on Monday as first responders evacuated a surrounding neighborhood and tried to keep more nearby homes from catching on fire."

"A tiny, vibrant world thrives along the rocky bottom of most streams. As sunlight filters through the water, mayfly nymphs, no larger than your fingernail, cling to algae-coated cobbles. Six spindly legs anchor them against the current, while feathery gills wave gently, drawing oxygen from the flowing water."

"Rust-colored piles of mine waste and sun-bleached wooden derricks loom above the historic Colorado mountain town of Leadville — a legacy of gold and silver mines polluting the Arkansas River basin more than a century after the city’s boom days."

"New Yorkers are spending billions on houses in flood-prone areas despite growing awareness of the effects of climate change."

"EPA has issued a violation notice to the operator of the country’s first carbon dioxide injection wells for permanent storage, alleging that the company hasn’t complied with its federal permit."