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269. Richard Dawkins — Flights of Fancy: Defying Gravity by Design and Evolution

The Michael Shermer Show

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The Evolution of the Aerodynamics of Flight

Bats, birds and terrasars all use their arms in different ways. The bat wing is a hugely outspread hand with very, very long fingers. Birds have feathers joined up to the arm but bats spread their fingers soth. And tera terrasars do it in yet a third way - they have just one extremely long finger. So that would be convernet evolution. Somehow you just have to get a membrane.

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