As a globe-trotting pro mountain biker, Hans Rey has seen firsthand how a bicycle can change - or even save - a life. "Bikes are used as an essential tool in the Third World instead of as a toy," he says. Rey runs the small program himself, from his Southern California base, with little overhead: He simply buys bikes in-country to support the local economy, then gives them away on the spot. To date he's made donations in Ghana, South Africa, Tanzania, Madagascar, the Philippines, Rwanda, Mexico, and India.