Automobiles

But now comes the hard part: making phones, PCs and other mobile gadgets that can take advantage of the broadcast spectrum's strong signals

The U.S. EPA and DOT argue that if automakers start using more batteries in cars, or make gasoline engines way more efficient, they can meet much higher fuel efficiency standards

How tiny waves of matter may help missiles stay on track

With the world's energy demands expected to increase more than three-fold over the next century, ExxonMobil and Shell executives acknowledge the necessity (and difficulty) of unseating inexpensive and efficient crude oil and coal

U.S.-made electric cars face a maze of export restrictions

For electric cars that run on American roads, it just might make the most business sense to build them in America

What will happen to electric car batteries once they've powered their last mile?

All the world's power plants, vehicles and factories that presently exist may not emit enough carbon dioxide to cause catastrophic climate change