Posterous theme by Cory Watilo

The Connection between Speed and Extinction

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Whooper swans are high fliers..a flock of whoopers was once spotted by a pilot at an altitude of 26,900 feet...but their migratory flights can amount to a marathon.

How much faster can human beings run..how close to a ceiling in performance are we...

The result will be an increasing speed of extinction for the polar bear subspecies...

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