By Gregory Mone
Posted 12.28.2007 at 12:17 pm 11 Comments
NASA's Upper Atmosphere Research Satellite (UARS), an observatory that was launched in 1991 and decommissioned in 2005, may have collided with another large object in space, according to a report on LiveScienc
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.