Daily Roundup: May 18, 2009

Penance: GE’s effort to clean up the mess it made in the Hudson River has begun. New York Times

Go-bama: The Sierra Club praised Barack Obama’s clean-car plan, which would establish national standards for fuel economy to cut emissions 30 percent by 2016. Sierra Club

Not Again: Tensions are flaring in the Owens Valley as the Los Angeles Department of Water and Power again prospects there for land and water rights. Los Angeles Times

Army Green: Retired military officials are drawing attention to the fact that how America uses energy jeopardizes national security. NPR

Now You Know: Wolfram|Alpha, a computational search engine, launched today, putting the answers to difficult science-research problems at the tips of people’s fingers. Scientific American

--Avital Binshtock