Electron Microscopes Can Reveal Filed-Off Serial Numbers

To make it difficult for law enforcement to trace stolen cars or weapons, thieves will usually grind off their metal vehicle identification numbers or serial numbers. And while techniques for trying to recover those numbers do exist, they're not as accurate as a new method developed by researchers at the National… »2/23/15 2:30pm2/23/15 2:30pm

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,… »11/03/14 6:34pm11/03/14 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 1:00pm4/22/08 1:00pm