As the U.S. prepares to descend on Iraq, one question looms in the background: Is North Korea next?
General Motors' Hydronomy program breaks the mold with research to link fuel cell cars to the electric grid by 2010.
A new fuel cell taps the energy of seafloor sediments.
How hybrid gasoline-electric cars work.
Technology exists to double gas guzzlers' fuel efficiency. So what's the holdup?
What Saddam still needs for nukes.
Thanks to advances in artificial intelligence, autonomous underwater robots can scope out underwater mines and oilfields better than cable-operated drones.
Computer models may soon protect the grid from cascading failures.
Supercomputers could help firefighters stay ahead of the flames.
Zero-emission driving may be more than hot air.