"President Barack Obama said Friday that his personal experiences with America's national parks - both as an 11-year-old with his mother and grandmother and later as a father - have made a conservationist out of him. The President was speaking at a conference hosted by the White House linking conservation with strong local economies through tourism, outdoor recreation, and healthy lands, waters and wildlife."

"SAN FRANCISCO -- In 2005, the USS America aircraft carrier was towed out to sea on her final voyage. Hundreds of miles off the Atlantic coast, U.S. Navy personnel then blasted the 40-year-old warship with missiles and bombs until it sank."

"After one of the biggest environmental fights in decades, exploratory drilling is expected to begin in July off the state's north coast. The company has plans in case of a spill; opponents say normal operations will still release damaging chemicals."

"The world's oceans are turning acidic at what could be the fastest pace of any time in the past 300 million years, even more rapidly than during a monster emission of planet-warming carbon 56 million years ago, scientists said on Thursday.

Looking back at this bygone warm period in Earth's history could offer help in forecasting the impact of human-spurred climate change, researchers said.

Budget pressures -- at least politically perceived ones -- are threatening basic science about the nation's water resources. In recent years the US Geologican Survey has cut back its programs for measuring streamflow and water quality -- which help protect people from flood disasters and drinking unhealthful water.

"The House approved a bill Wednesday that rewrites two decades of water law in California, wiping out environmental protections and dropping reforms of federal irrigation policy that have long irritated agribusiness in the Central Valley."

"Plugging the leaks in water pipes and building new ones to keep up with a growing population could cost the United States $1 trillion over the next 25 years, according to an industry study released Monday."

"New Jersey faces serious water quality challenges, including sewage pollution, but upgrading old infrastructure can help address them, according to federal officials. On Tuesday, the U.S. Environmental Protection Agency announced its approval of New Jersey’s latest list of streams, lakes, rivers, bays and other waters that are considered impaired or threatened by pollutants."

"Frustrated with the pace of the United Nations group charged with protecting Antarctic waters, a coalition of environmental groups announced its own initiative on Tuesday, calling for the creation of what would be the world’s largest network of marine reserves in the Southern Ocean."