If you want to sell the climate change fight, make it about personal health.
The Golden State is going green in a big way, but needs to kick its auto addiction.
They key? A genetically modified virus.
Self-driving cars might be almost 10 percent of the automotive market in a decade and a half.
The government considers new incentives to slow skyrocketing gasoline consumption.
Get ready for a big downgrade.
A Louisiana refinery ramps up production of a biofuel that could power everything from Jettas to jetliners.
Elon Musk wants a ticket to Mars to cost $500,000. For those left behind, he'll have a cheap electric car for you.
A startup says its new battery will make cheap, 300-mile-range electric cars as common as Corollas.
The impoverished nation is going solar in a big way.
Gadgets called inverters are key to making usable solar energy, and Google wants them super small and cheap.
While Europe powers ahead, the U.S. government tries to jumpstart offshore wind technology.
Time is running out to cash in on a lucrative subsidy for renewable energy.
Solar energy will replace coal as a notorious Nevada power plant is shuttered.
The wind business crashed in 2013, yet a record number of turbine farms are under construction in the U.S.
Former Governor Arnold Schwarzenegger's dream of building a hydrogen highway to fuel carbon-free cars is back in production.
Can a 2,250-foot-high wind tunnel generate electricity more cheaply than coal?
The photovoltaic boom in Japan is helping China, too.
Out in the desert it's hard to know when one solar panel among millions has failed. Unless you're a drone.
A federal report calls California's Ivanpah solar power plant a "mega-trap" for wildlife. Even solar panels can prove a fatal avian attraction.
The federal government says automakers are reducing their vehicles' emissions, but a close look at the numbers shows some red flags amid the good green news.