How many hours = a great TED Talk? Here’s how these speakers prepped for the TED Idea Search

The most interesting ideas often come from the most unexpected places. We searched the globe for ideas with the power to inspire, motivate and change lives — and we found them at @TEDx events around the world. The TED Idea Search follows extraordinary speakers from 9 countries competing for a spot on the TED main stage in Vancouver this April. #TEDIdeaSearch