Each of us had to come up with an >X< — a big hairy topic that needs addressing,
Today, we are brainstorming "radical technology ideas for solving global problems. Radical in the sense that the solutions could help billions of people. Radical in the sense that the audaciousness of the proposals makes them sound like science fiction."
More to come on Tuesday. For now, they have a teaser video [update: site just went live with video]