Why do fingers become wrinkled in water?

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View full lesson: http://ed.ted.com/lessons/pruney-fingers-a-gripping-story-mark-changiziWhy do fingers become pruney when they get wet? Likely, for the same reasons that tires have treads. Mark Changizi examines the evolutionary reasons for pruney fingers, while exploring natural and manmade phenomena, like river networks, that operate similarly.Lesson by Mark Changizi, animation by Lippy. Learn more about your ad choices. Visit megaphone.fm/adchoices

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This episode is 6 minutes long.

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This episode was published on June 21, 2026.

What is this episode about?

View full lesson: http://ed.ted.com/lessons/pruney-fingers-a-gripping-story-mark-changiziWhy do fingers become pruney when they get wet? Likely, for the same reasons that tires have treads. Mark Changizi examines the evolutionary reasons for pruney...

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