Tracking The World's Slowest Migration: Galapagos Tortoises - Stephen Blake

Of all the animals in the planet that are difficult to track, one wouldn't assume that a 600-pound reptile that walks .2 miles per hour would be on the list. But Stephen Blake has enlisted the help of satellites to keep an eye on the Galapagos tortoises. He's been tracking their seasonal migration from the island's lowlands up volcanoes into the highlands, in search of food.