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Rarely do we see animal biology impinging on our separate human existence. As medicine has incorporated more veterinary and other work. However, it should come as no surprise that our very intimate knowledge of life and death should be invaded by knowledge achieved from the study of a small bird. Now we know why our body size is of great importance in determining life span.

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The coincidence of this project was that the larger birds also developed even shorter telomeres (and lived for a shorter time.)

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So, not only do the bigger fall harder, but they also fall faster.