"The Justice Department on Wednesday asked a federal judge in New Orleans to require BP to produce documents that outline how it low-balled the amount of oil flowing into the Gulf of Mexico from its Macondo well in 2010. The estimates were sent to the Coast Guard and Congress."

"The Obama administration is proposing to allow the Navy to harm more than 30 million marine mammals while conducting exercises in two training ranges over the next five years."

"In south Texas, where the Rio Grande divides the United States from Mexico, three of the last remaining sections of border fence -- approved more than five years ago -- remain unbuilt."

"Mexico City plans to draw drinking water from a mile-deep aquifer, according to a report in the Los Angeles Times. The Mexican effort challenges a key tenet of U.S. clean water policy: that water far underground can be intentionally polluted because it will never be used."

"Levels of PFOS, a chemical manufactured by 3M Co. for a variety of commercial uses until about 10 years ago, have improved significantly in the Mississippi River between Hastings and St. Paul -- except for the area around the company's Cottage Grove plant, where they have worsened."

"A trio of environmental groups warned Monday they would sue the operator of three coal-fired power plants in Maryland for allegedly discharging excessive amounts of nutrient pollution into Chesapeake Bay rivers and trying to mask their violations by transferring pollution 'credits' among facilities."

ExxonMobil is the last defendant in a landmark lawsuit in New Hampshire over contamination of drinking water withthe gasoline additive MTBE. Citgo is in talks to settle out of court.

"SUQUAMISH, Wash. — Stormwater runoff from highways appears to contain one or more unidentified compounds shown to be highly toxic to coho salmon and perhaps other salmon as well."

"As world food and energy demands grow, nations and some corporations increasingly are looking to acquire quality agricultural land for food production. Some nations are gaining land by buying up property -- and accompanying water resources -- in other, generally less wealthy countries."

"The megacity's water shortage could be eased by an aquifer a mile under the surface of Iztapalapa, a neighborhood whose terrible water quality is the butt of local jokes."

"The volume of drilling wastes from Pennsylvania’s Marcellus shale is growing and threatening to overwhelm existing waste-handling infrastructure in Ohio and other states, according to a study released Tuesday."

"The largest gathering of scientists and engineers from around the world to discuss the effects of the BP Deepwater Horizon oil spill kicks off in New Orleans on Monday, with more than 800 people from universities, state and federal agencies, non-governmental organizations and industry expected to attend. The three day Gulf of Mexico Oil Spill & Ecosystem Science Conference is aimed at understanding the impacts of pollution resulting from the spill and its effect on natural systems in the Gulf and along the shoreline, and on the people who live and work there."

"An antibiotic widely used in soaps and cosmetics that mostly goes down the drain is slowly converting to toxins at the bottom of many of Minnesota's lakes and rivers."

"The Atlantic Canyons off the Northeastern U.S. plunge as deep as 15,000 feet and harbor diverse and fragile marine ecosystems. Now, the Obama administration’s plans to consider offshore oil and gas exploration in the canyons is troubling conservationists."

"A new federal report finds toxic contamination remains widespread in the Chesapeake Bay, with severe impacts in some places, which health and environmental advocates say lends support to their push in Annapolis for legislative action on pesticides and other hazardous chemicals."