Researchers have built and tested for the military a portable machine that efficiently turns waste into electricity.
If we can't adequately reduce or sequester carbon emissions, are more-radical alternatives like orbital mirrors a solution to climate change?
Rising corn prices are already affecting everything from the cost of tortillas in Mexico City to the cost of producing eggs in the United States.
Infrared monitoring shows that savvy seabirds steer clear of wind turbines.
In President Bush's proposed 2008 budget, weapons development wins big while overall funding for research suffers.
Oil from microorganisms could help ease the nation's energy woes.
The fourth in a series of international reports, due out tomorrow, reflects better science and more-precise models.
Moving too quickly on alternative fuels could backfire, says one expert on ethanol fuels.
Researchers find a way to make liquid fuels from waste cheaply and without the pollution produced by earlier methods.
Recent advances in battery chemistry and systems design could lead to working prototypes by year's end.