X Prize's Call for Votes in Next Big Crazy Green Idea ChallengeThe X Prize Foundation is looking for a new challenge for their next Energy and Environment prize, and they want Gizmodo readers to vote on it. The X Prize is an educational nonprofit prize institute dedicated to create radical breakthroughs for the benefit of humanity, like when Burt Rutan built and flew the world’s first private spaceship to win the $10 million Ansari X Prize. To propose the challenge for the next big crazy green idea, they have selected the best three from 133 videos: The Capacitor Challenge The Energy Independence X PRIZE Energy X-Prize: Reduce Home Energy Usage [Vote now]