It's not just about transportation: the transition to fuel-cell cars could transform energy infrastructures and developing economies while helping the environment
Stem cells from adults may not be so useful after all
A start-up contemplates nonpolluting cars powered by an ingredient of soap
Advanced nuclear power plants might be the best way to meet future energy needs without worsening global warming
Portable Power From Fuel Cells Inches Along
For billions of years the sun has steadily provided vast amounts of energy. Are we ready to tap into this resource?
Although many features on the surface of Mars are now credited to water, wind too may have played a significant part in their creation
Sunken nuclear subs pose no immediate threat, but they could be long-term ecological time bombs