Before you hit the snooze button a second time on this alarm clock, you'll have to hunt it down. The shag carpet-covered robotic alarm clock on wheels, called Clocky, rolls away and hides. The clock is the invention of Gauri Nanda, a graduate student - and occasional oversleeper - who works in the Media Lab at the Massachusetts Institute of Technology. "I've been known to hit the snooze bar for a couple hours, wake up two hours later and be completely shocked," said Nanda, 25, who created Clocky for an industrial design course last year. She made a prototype out...