"This is a very difficult outcome one week before the Olympics," Lindsey Vonn said after Friday's crash. But she's not giving up yet.
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What really happens when a space shuttle returns with no astronauts
When a spacecraft comes home without people on board, it is not a cinematic failure but a carefully choreographed engineering ...
Intelligent drones and unmanned aerial systems (UAS) are rapidly evolving from experimental prototypes into essential ...
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