After years of controversy, a therapy based on human embryonic stem cells is finally being tested in humans. The treatment holds out hope to paralyzed people, but at how great a risk?
Do you know how much REM sleep you got last night? New types of devices that monitor activity, sleep, diet, and even mood could make us healthier and more productive.
It's the dark side of innovation: how crooks peddling fake antivirus software have gamed the Web in a billion-dollar rip-off.
Today's electric cars and wind turbines rely on a few elements that are mined almost entirely in China. Demand for these materials may soon exceed supply. Will this be China's next great economic advantage?
Our second annual list of the world's most innovative technology companies highlights businesses whose work is changing industries and lives.
Every clean-tech startup these days claims to have a breakthrough that will finally make renewable and clean energy sources cheap enough to compete with fossil fuels. But are we really on the brink of a clean-energy economy?
Google's growth plans depend in part on whether it can make the entire Web faster.
Square, founded by the creator of Twitter, lets people accept credit cards with their smart phones. That innovation could transform transactions in surprising ways.
Evidence is growing that your DNA sequence does not determine your entire genetic fate. Joseph Nadeau is trying to find out what accounts for the rest.
For the first time, scientists can track the precise genetic changes behind an individual case of cancer. Such information provides a picture of how tumor cells originate and evolve. And it could change the way we treat the disease.