http://www.latimes.com/news/science/la-sci-evolution11dec11,0,5882337.story http://www.latimes.com/news/science/la-sci-evolution11dec11,... "In the last 5,000

http://www.latimes.com/news/science/la-sci-evolution11dec11,0,5882337.story http://www.latimes.com/news/science/la-sci-evolution11dec11,... "In the last 5,000 to 10,000 years, as agriculture was able to support increasingly large societies, the rate of evolutionary change rose to more than 100 times historical levels, the study concluded."