The Mars rover Curiosity is back out of safe mode after a computer glitch, according to NASA. The rover is still using its backup computer, but it resumed using its high-gain antenna to communicate with Earth.
The rover experienced some memory problems last week and put itself into safe mode as a precaution. NASA is still analyzing the problem. Meanwhile, rover experiments will resume probably next week.
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.