Artificial Intelligence Revs Up Evolution’s Clock

October 14, 2020 • by Marc Airhart

When Risto Miikkulainen and Padmini Rajagopalan simulated hyenas forming mobs to steal prey from lions, they found something surprising.

A lion faces a mob of hyenas

Evolutionary biologists never have enough time. Some of the most mysterious behaviors in the animal kingdom—like parenting—evolved over thousands of years, if not longer. Human lifespans are just too short to sit and observe such complex behaviors evolve. But computer scientists are beginning to offer clues by using artificial intelligence to simulate the life and death of thousands of generations of animals in a matter of hours or days. It's called computational evolution.

One behavior that's long baffled biologists is called mobbing, in which a gang of hyenas team up to steal prey from much more powerful lions. When UT Austin computer scientists Risto Miikkulainen and Padmini Rajagopalan simulated hyenas and lions on a virtual African savannah, they found something surprising.

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