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.
Ten years after scientists finished mapping our DNA, they have many unanswered questions.
A new wave of plug-in hybrids and all-electric vehicles will have to overcome a familiar nemesis: battery costs.
Google and the geeks from Silicon Valley aim to revolutionize the 70-year-old TV industry. Conquering the Internet was easy in comparison.