NASA space apps challenge

https://2016.spaceappschallenge.org/

April 22-24
For 48-72 hours across the world, problem solvers like you join us for NASA’s International Space Apps Challenge, one of the largest hackathons in the universe. Empowered by open data, you collaborate with strangers, colleagues, friends, and family to solve perplexing challenges in new and unexpected ways — from designing an interactive space glove to natural language processing to clean water mapping.