Robot spy planes are harnessing alternative energy to make them more covert and longer lasting than ever.

Set your ultraviolet rays to stun. Researchers have now developed a molecular on-off switch that can paralyze animals when they are exposed to ultraviolet beams.

Algae oil production on land is expensive, but the costs could go down if brought out to sea.

With the ability to keep electronic devices powered for years, radioactive batteries could handle even the most extended iTunes playlist.

After you’ve replaced your incandescent lightbulbs with fluorescent and chucked the energy-hogging fridge, it’s time to integrate reduced energy use with at-home generation.

At least for the moment, the world's fastest supercomputer is devoted to solving scientific questions that may save the planet — climate change, renewable energy, new medicines — rather than advances in nuclear weapons that might blow it up.

Check out some of the technologies supported by President Barack Obama’s $3.4 billion in grants for projects designed to modernize the grid with cutting-edge innovations.

To cool down sweaty troops and improve energy efficiency, the U.S. military recently began coating 900 air-conditioned tents with spray-on insulating foam.

Santa's little helpers have been busy cranking out some great stuff, from connected media players and multitouch screens to wafer-thin HDTVs and groovy netbooks.

Flying cars have long filled our fantasies. That fantasy may will become a reality within the next five years. These  six designs might someday soon send you soaring over traffic jams.

A new material modeled after the egg case of a snail could have a variety of applications from bungee cords to artificial ligaments.

The Department of Transportation’s IntelliDrive program brings together government, industry, academia and others to specify, develop and produce technology for safer driving.

Scientists from the University of California, Berkeley and Switzerland-based NLV Solar are developing solar cells based on one of the most widely available minerals on the planet, pyrite.