"California’s public drinking water systems violated safety levels for contaminants more than 1,000 times during the 2012-2013 fiscal year says a report that cites high levels in some water systems of arsenic, nitrates and other pollutants."

"LONDON — Cleaning up an oil field in a forbidding environment like the North Sea may be almost as formidable a task as developing one, and in the coming years, those waters are likely to serve as a laboratory for what happens when the useful lives of oil fields expire."

"Flame retardants and pesticide byproducts are showing up at potentially toxic levels in sharks, rays and other marine life in the Indian River Lagoon and in the ocean just off Brevard County."

"SÃO PAULO, Brazil — Endowed with the Amazon and other mighty rivers, an array of huge dams and one-eighth of the world’s fresh water, Brazil is sometimes called the “Saudi Arabia of water,” so rich in the coveted resource that some liken it to living above a sea of oil. But in Brazil’s largest and wealthiest city, a more dystopian situation is unfolding: The taps are starting to run dry."

"CHARLESTON, W.Va. -- Emergency crews and environmental officials are responding to a train derailment in West Virginia that sent at least one tanker containing crude oil into a river and also caused a nearby house to catch fire."

"The federal government’s decision to consider making the Hackensack River a Superfund site is drawing praise from local mayors and other elected officials — but that praise comes with caveats, including a sense that the Hackensack’s pollution is so pervasive and its hydrology so complex that trying to clean it up might be a fool’s errand."

"Earlier this month the U.S. Navy's research office rented out a conference center in Washington, D.C., to show off some of its hottest new technology."

"For the past five weeks, volunteers have been desperately trying to nurse back to health more than a hundred sea lions found stranded along the state's beaches in a mystery that's threatening one of California's most lovable sea creatures."

"The U.S. Environmental Protection Agency has selected a plan to clean up dioxin contaminated properties along the Tittabawassee River floodplain and work is expected to start this year."

"A task force representing Iowa and 11 other states said Thursday it needs another 20 years to reduce the size of a dead zone in the Gulf of Mexico by two-thirds."