Thirty years ago, Will Smith was mesmerized by a photo of the incredible wildebeest migration across the Serengeti in a National Geographic magazine. Now he visits those same wildebeests and discovers an amazing survival strategy. Individually, wildebeests are animals with low intelligence, but when threatened, they group together and behave as if they have a single, super-intelligent brain. Will discovers that without this superpower, thousands of wildebeests could never survive the 150-mile gauntlet of the most blood-thirsty predators on the planet.
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The Himalayan Honey Bee, Apis Laboriosa, forms several layers of curtains on the outside of its hives - they create a synchronous movement that makes them appear like one larger organism. (National Geographic/Struan Kane)
The fruiting bodies of Dictyostelium discoideum each contain thousands of spores and are supported on stalks formed by amoeba that have sacrificed themselves for the colony's survival. (National Geographic/Rob Hollingworth)