"An official with the Army Corps of Engineers told a Congressional committee Tuesday it doesn't plan a broad environmental study on exporting coal from the western United States."

"The antipoverty group Oxfam has come up with a scorecard that evaluates the impact that the supply chains of behemoth food companies have on water consumption, labor and wages, greenhouse gas emissions and nutrition."

"Microbes are known to be able to thrive in extreme environments, from inside fiery volcanoes to down on the bottom of the ocean. Now scientists have found a surprising number of them living in storm clouds tens of thousands of feet above the Earth. And those airborne microbes could play a role in global climate."

"PITTSBURGH -- An ongoing U.S. Environmental Protection Agency study on natural gas drilling and its potential for groundwater contamination has gotten tentative praise so far from both industry and environmental groups."

"A mercury-containing preservative rarely used in the United States should not be banned as an ingredient in vaccines, U.S. pediatricians said Monday, in a move that may be controversial."

"An anonymous donor is giving Georgetown University $20 million to support a major initiative for the study of the environment, school officials say."

"Google's Street View maps are headed into the backcountry. Earlier this week, two teams from Google strapped on sophisticated backpacks jammed with cameras, gyroscopes and other gadgets and descended to the bottom of the Grand Canyon. But this is just the first step in the search giant's plan to digitally map and photograph the world's wild places."