"Sixteen states on Monday filed lawsuits against the U.S. Environmental Protection Agency, contesting a rule that expands the definition of bodies of water subject to federal pollution controls."

"The tiny fish known as the bristlemouth is part of a detective story that bears on everything from feeding the planet and monitoring ocean health to learning how to better predict climate change."

"New genetics research shows how cold-water corals can increase their resilience to global warming at a pace that could match climate change."

"While the debate over whether to label foods containing GMO ingredients plays out across the country, another engineered food has long been waiting to hit grocery stores: genetically modified salmon."

"Lake Mead sunk to a record low Tuesday night, falling below the point that would trigger a water-supply shortage if the reservoir doesn't recover soon."

"Duke Energy’s plan to dig up 12 more coal ash ponds, announced Tuesday, means the company now aims to excavate 24 of its 36 ponds in the Carolinas."

"Green groups urged the U.S. Department of Interior on Tuesday to revoke the agency's conditional approval of Royal Dutch Shell's 2015 Arctic oil exploration plan, saying it runs counter to established protections for walruses."

"East Porterville [California] saw some of the first dry wells last year. Local doctors say more people have difficulty breathing. No running water, dirtier air amplify pre-existing health issues."

"At least some of the tar balls found littering one of southern California's most popular beaches last month were matched by lab tests to crude oil that spilled from a ruptured pipeline along the Santa Barbara coast about 100 miles away, state and pipeline company officials said on Monday."

"Drinking water wells in Texas counties that are home to intensive hydraulic fracturing operations contain elevated levels of more than two dozen metals and chemicals, including carcinogens, according to a new study in Environmental Science & Technology."