The world's most precise clock can keep time for 5 billion years

If you want to know exactly what time it is, head of over to Boulder, Colorado, where a fountain of cesium atoms ticks off the U.S.'s official time. It should be accurate for the next 300 million years. But don't be impressed—the world's actual most precise clock is a few miles away at a different lab in Boulder, and… » 11/03/14 6:34pm 11/03/14 6:34pm

RoboCup Rescue: A Rubble Hellscape With Screaming, Wriggling Dolls

The RoboCup soccer tourney gets all the publicity, but the RoboCup Rescue competition kicking off this week in Germany is thrilling in a more macabre way: Each year the rubble-strewn maze gets more and more complicated, as robots use AI and all their mechanical faculties to locate (though not necessarily recover)… » 4/22/08 1:00pm 4/22/08 1:00pm