Civil libertarians are outraged about Total Information Awareness, the government's Orwellian plan to monitor everyone, all the time. But some computer scientists say it might be the only way to save civilization.
Astronomers assess the news of two recent asteroid near-misses and what it says about the long-term threat of an asteroid collision with the earth.
Chris McKinstry, a computer scientist and an artificial intelligence expert, has embarked on a groundbreaking artificial intelligence project that aims to leverage the mind power of millions of Web surfers to teach a computer to approximate human thought.