"RALEIGH, N.C. -- President Barack Obama signed a bill Monday promising health benefits for Marines and families who were exposed to contaminated water at a North Carolina Marine base for decades."

"LINCOLN, NEB. -- Jane Kleeb is a savvy activist who, Nebraska’s Republican governor once said, “has a tendency to shoot her mouth off most days.” A Florida native who moved to Nebraska in 2007 after marrying a rancher active in Democratic politics, she did as much as anyone to bring the massive Keystone XL crude oil pipeline to a halt last year."

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"In a lawsuit filed in federal district court, the North Carolina Environmental Justice Network, the Waterkeeper Alliance and Neuse Riverkeeper Foundation accuse a Jones County hog farmer of illegally disposing of and discharging animal waste into creeks, rivers, ditches and lands surrounding the farm."

"On a hot summer day, it's hard to see how the Conowingo Dam could hurt the Chesapeake Bay. Anglers line the shore below the 94-foot high impoundment, casting out into the gently roiling Susquehanna River for rockfish breaking the water. Yet unseen, on the other side of the dam, millions upon millions of tons of sediment and nutrient pollution are slowly building up that could wreak havoc on the bay if they get through."

"Transport Minister Denis Lebel has turned down Hamilton’s request for help cleaning up historic airport pollution that happened on the federal government’s watch."

A recent EPA shutdown of its effort to gather basic information on livestock feeding operations may make it impossible for the agency to regulate water and air pollution from the manure they generate.

Lake Ontario's lake trout have been a key indicator of pollution that affects humans and other species.

Ann Arbor's stretch of the Huron River seems an oasis where people can go kayaking and tubing to cool off in the summer. But not far from the river, the ruins of a coal-gas plant dating back to the late 1800s may still be oozing pollutants into the groundwater.

"MADISON, Wis. -- Federal transportation officials have ordered a Houston-based energy transportation company not to re-open a pipeline after it ruptured and leaked oil into a Wisconsin field."

"Owners of one of the nation’s largest impoundments of the often-toxic byproducts of burning coal must do more to protect residents from groundwater contamination and stop accepting waste by 2016, under an agreement with Pennsylvania regulators."