New Biofuels Could Cut Emissions
Researchers combine ecological and economic models to examine the benefits of growing grass as fuel.
Fuel
Hydrogen Fuel Is Set to Take Off, but Is It Safe?
In California, hydrogen-fueled cars are gaining in popularity. Will their safety issues garner greater scrutiny?
Gas Mileage Labels Get Sophisticated
The federal government has unveiled updated designs for those informational stickers on new cars. The hope is to nudge buyers into choosing more fuel-efficient models.
Opening Northern Sea Lanes May Melt Arctic Ice Faster
Sailing from the Atlantic to the Orient across the roof of the world has been the dream of Arctic explorers and world traders for centuries. It saves fuel, too, so what's not to like? Well ...