A new finding is intended to spur action at the Copenhagen climate change conference.
DOE plans to fund research into organisms that make fuel without photosynthesis.
The government-appointed chairman is bringing big changes to the automaker.
Another step in a Sisyphean effort to extract useful energy from the ocean.
The zero emissions city probably won't founder as a result of a neighbor's economic crisis.
Electric vehicles could sneak up on pedestrians; a warning system could head off lawsuits.
The aircraft will one day be used to circumnavigate the globe.
New figures get beyond startup company hype.
A U.S. competition showcases the fastest battery-powered cars and bikes.
Industry experts weigh in at a conference in Washington, DC.