"Move over Moby Dick. Big Mama, the first humpback whale to have returned to the North Pacific's Salish Sea after decades of absence, is telling a new story about the global threat to whale populations."

"Opponents of offshore wind around the U.S. are pelting projects with lawsuits seeking to cancel them or tie them up for years in costly litigation."

"The worst drought on record has lowered the water level of the rivers in the Amazon basin to historic lows, in some cases drying up riverbeds that were previously navigable waterways."

"Flooding events around the world share a common factor of an atmosphere made warmer by climate change. What can be done to help citizens prepare?"

"For the third time in two decades the Environmental Protection Agency appeared in federal Appellate Court this week to defend its admittedly flawed approach to regulating the billions of pounds of manure running off into the nation’s waters from large industrial animal feeding operations."

"Yorba Linda is a small, sunny city southeast of Los Angeles. It’s perhaps best known for being the birthplace of President Richard Nixon. But in the past few years, Yorba Linda has picked up another distinction: It’s home to the nation’s largest per- and polyfluoroalkyl (PFAS) water treatment plant of its kind, according to the city."

"We toured a facility in Northern Virginia to see how it works and to understand why water use and energy consumption are such a concern."

"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 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."