Nobody likes arriving at an empty coffee pot. Especially computer scientists at Cambridge University—which is why, back in 1991, a team of them invented the world's first webcam to keep an eye on coffee levels from their desks.
You. Yes you. Don't sit around looking so smug. You're not perfect—and now, scientists have the evidence to back up that very claim.
Cambridge University researchers have developed a $3 LED-based lightbulb that is 12 times more efficient than regular tungsten light bulbs, three times more than low energy ones. It lights up instantly, lasting for 100,000 hours,