Just to pick one example, ancient people actually had very good teeth: http://news.discovery.com/human/evolution/ancestors-had-much-better-teeth-130219.htm htt

Just to pick one example, ancient people actually had very good teeth: http://news.discovery.com/human/evolution/ancestors-had-much-better-teeth-130219.htm http://news.discovery.com/human/evolution/ancestors-had-much...