Even though it was widely believe that humans were not evolving, a new study shows that this may be false. According to the study, which examined an extremely large sample size, humans beings are continuously evolving. According to the study, within the last 5,000 years, our brain size has continued to shrink. This is not to say that we are becoming dumber as a race, but more likely that some of the brain function that our distant relatives used to use are no longer necessary. 

http://www.livescience.com/19993-humans-evolving-natural-selection.html

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