How to Clean Up Deadly Space Junk Before Disaster Strikes

Hit film Gravity offers a hyper-realistic portrait of life in space, including the possibility that an avalanche of space debris could be fatal. This is a real threat, so we'd better be ready. Here are ideas that scientists, engineers and other experts have proposed to reduce the space junk threat, and clean up our… » 10/10/13 11:21am 10/10/13 11:21am