"ASTORIA, Ore. — The salmon here in the Columbia River, nearly driven to extinction by hydroelectric dams a quarter century ago, have been increasing in number — a fact not lost on the birds that like to eat them. These now flock by the thousands each spring to the river’s mouth, where the salmon have their young, and gorge at leisure."

"Kurdish and Iraqi forces seized control of Iraq’s largest dam from Islamic State militants as the U.S. deployed air power that helped reverse some gains made by the Sunni-Muslim insurgents in the north."

"DuPont wants to clean up its former Pompton Lakes munitions plant — contaminated with a litany of elements that can cause cancer and other illnesses — using far weaker standards than the state usually requires, a strategy that echoes prior attempts by polluters to push for less extensive cleanups at other sites in North Jersey."

"Back in April 2006, officials from West Virginia American Water told state regulators they were planning to review the Elk River watershed to find out what potential contamination sources were upstream from their Kanawha Valley water treatment plant."