"A fast-growing kelp from the Far East has spread along the California coast from Los Angeles to San Francisco Bay, worrying marine scientists and outpacing eradication efforts."

"TUCSON, Ariz. (AP) -- Long dependent on wellwater and supplies sent hundreds of miles by canal from the Colorado River, this desert city will soon harvest some of its 12 inches of annual rainfall to help bolster its water resources."

The Center for Biological Diversity has filed the federal lawsuit on ocean acidification, charging that the EPA has failed to comply with its mandate under the Clean Water Act to protect Washington State’s ocean waters from excessive CO2.

"When you hear about dead zones in the Gulf of Mexico and the Great Lakes, they’re largely caused by pollution draining from the farm belt. It can take a long time and a lot of money to reduce pollution at factories. So they’re starting to pay farmers to cut pollution instead."

"An El Nino weather pattern this year appears almost certain, Australia's Bureau of Meteorology said on Wednesday in a revised forecast, raising the prospect of drought in Australia and a even weaker monsoon in India."

"A bill introduced earlier this month would bring federal oversight of hydraulic fracturing fluids -- chemical mixtures pumped at high pressure into oil and gas wells in order to unlock deposits trapped deep underground."