In Pictures: The 31 weirdest, wackiest and coolest sci/tech stories of 2012

From Google Android development to crazy iPhone stunts, it’s been a busy year

NASA said it wants to gauge industry interest in the agency holding one of its patented Centennial Challenges to build the next cool unmanned aircraft. NASA said it is planning this challenge in collaboration with the Federal Aviation Administration and the Air Force Research Lab, with NASA providing the prize purse of up to $1.5 million. The type of challenge NASA said it is envisioning would be no easy task as it is looking to address one of the more complicated drone issues - sensing and avoiding other aircraft.

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