A new catalyst could make ethanol fuel cells practical for portable gadgets.
Could geothermal heat boost biofuel output?
A study suggests that increased power demand from plug-ins can actually reduce pollution.
Canada's budget lacks the renewables focus of Obama's plan.
It's good news for renewable energy, but the Senate still needs to weigh in.
The benefits of some schemes aimed at cooling the planet have been miscalculated.
The president clears away obstacles to reducing U.S. gasoline consumption.
Combining different battery technologies could improve vehicle performance and reduce costs.
After delays, the Google-funded car is due out this fall.
A new way to convert heat into electricity could lead to more efficient solar power.