"U.S. EPA Administrator Lisa Jackson on Wednesday declared the entire concrete-lined Los Angeles River channel 'traditional navigable waters,' a designation crucial to applying Clean Water Act protections throughout its 834-square-mile urban watershed."

"Companies with a financial interest in a weed-killer sometimes found in drinking water paid for thousands of studies federal regulators are using to assess the herbicide’s health risks, records  of the U.S. Environmental Protection Agency show. Many of these industry-funded studies, which largely support atrazine’s safety, have never been published or subjected to an independent scientific peer review."

"New Orleans, which managed to escape the oil from the BP spill for more than two months, can't hide any longer. For the first time since the accident, oil from the ruptured well is seeping into Lake Pontchartrain."

"La Nina is likely to cool the tropical Pacific in coming months, a phenomenon which usually causes stronger monsoons across Asia and eastern Australia, the World Meteorological Organization (WMO) said on Tuesday."

"More than 27,000 abandoned oil and gas wells lurk in the hard rock beneath the Gulf of Mexico, an environmental minefield that has been ignored for decades. No one — not industry, not government — is checking to see if they are leaking, an Associated Press investigation shows."

Just as harmful to the Gulf of Mexico as the BP oil spill is the annual "dead zone" whose increase in recent years has been driven by nitrogen fertilizer used to produce corn ethanol in the U.S. heartland.

"The first round of government tests of the chemical dispersants that are being used to break up the massive oil spill in the Gulf of Mexico found they aren't overly damaging to shrimp and small fish, but more tests are needed to determine what happens when they're mixed with oil."

People on the Monterey Peninsula face rising water bills as the California state water board forces their supplier to turn to desalination.