Record set in solar cell efficiency - with light of a thousand suns
Scientists at the U.S. Department of Energy have created a solar cell that can convert 44 percent of sunlight hitting it into electrical energy, setting a new record for solar cell efficiency. But it took the light of 1,000 suns to do it. Full story
Stuck in traffic? Get a few drivers to stay home
If just one percent of drivers from commuter-heavy neighborhoods stayed off the road during rush hour, traffic congestion for everyone else would drop up to 18 percent, according to a first-of-its-kind analysis of cellphone data.
Window-cleaning robot swipes a chore from to-do list
Move over vacuuming Roomba, here comes something sleeker: a robot with just the right mix of suction and drive to smoothly clean windows. Full story
13 technologies you won't see in 2013
The Maya apocalypse was only one of many products that missed their release schedule in 2012 — and the same will hold true next year as well. Find out about 13 talked-up technologies that won't see the light of day in 2013.
Viral video vote: Dream gift, Grinch kitty and more
Will a dad's amazing reaction to a dream present win over more viewers than a dancing traffic reporter, or a Grinch kitty? Those compete against the ghost elevator prank, a two-time winner.
