Andy Stone

Nursing student Amy Petrovic Best came within hours of death nine years ago.

You love renewable energy and love your view. Which are you going to give up?

The Banatao brothers want to clean up surfing by building boards with nontoxic materials.

Solar power is the Philadelphia Phillies of energy: perennially full of promise.

Miles L. Rubin bets China can help him win the race to get a full-speed electric vehicle on U.S. highways

Thoratec's tiny heart pump could offer the sickest cardiac patients an alternative to a transplant

GM may yet beat Toyota in plug-in cars, but its breakneck development pace is fraught with risk.

Turbines are eyesores. So why not put them out on the high seas?

Ossur's bionic limbs help amputees get around. Intelligent knee braces for graying jocks could be next.

Esophageal cancer is particularly deadly. A new device might prevent the disease in some patients at risk. Does it work?