How Did Charlie Engle Think of Water.org?

Some of the world’s best ideas come from physical activities: as you hone the machine that is your body, your mind is freed to make new connections. So it makes sense that during his run across the entirety of the Sahara Desert, Charlie Engle’s transcendent thoughts and global exploration led to the idea of water.org. Hear about his extraordinary trip, and the idea for a movement born of his journey.  

Grey interviewer: Worldwide Chief Innovation Officer Dan Bennett