Why Calvin Klein and Coco Chanel Became Inevitable

Evolutionary biologists discover the naked truth, or so they believe. Genetic testing suggests that the ancestors to human beings lost their fur about 1.2 million years ago. In another neat, but somewhat disgusting, bit of genetic sleuthing, researchers checked to see when human body lice, which live only in clothing, first evolved. They diverged from head lice around 50,000 years ago, so scientists deduce that people must have started wearing clothes a few thousand years earlier in order to give the lice time to evolve to fit their new habitats.