Will Marshall: Tiny satellites that photograph the entire planet, every day

Satellite imaging has revolutionized our knowledge of the Earth, with detailed images of nearly every street corner readily available online. But Planet Labs Will Marshall says we can do better and go faster by getting smaller. He introduces his tiny satellites no bigger than 10 by 10 by 30 centimeters that, when launched in a cluster, provide highres images of the entire planet, updated daily. TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the w