Thursday, March 12, 2009

Humans Still Evolving

To my great surprise, I only recently learned that the consensus among scientists was that humans had ceased evolving more than fifty thousand years ago. They held that natural selection hasd't come into play since then and that our modern skulls houses Stone Age minds.

But closer observation of the genetic material of the last ten thousand years now seem to show that instead, there's rather been a growth, an avalanche of evolutionary changes in the human body during that recent period and apparently the mutations accelerate as we speak.

The brain, digestive system, lifespan, immunity, sperm production and bones, some two thousand mutations have been identified and traced back. We are differenciating under a wide diversity of environments, the variations in social condition, lifestyle, stress levels, pollution, and the intensification of some of these factors that comes with population growth, all at a recently unsuspected speed.

What will we be in five hundred years?

Learn more from DiscoverMagazine.

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