SciShow explains the genetics -- and physics -- behind why blue eyes are blue, and what the future may be for the trait. Spoiler alert: Blue eyes aren't really blue! SciShow explains! Hosted...
========== Despite the apparent prevalence of the trait
among swanky crooners and British spies andcreepy old creatures who just hung onto the
ring for too long, only about 8% of the world'shuman population has blue eyes. Here in the
U.S. it's about twice that, but that's stilla lot less than it was at the turn of the
twentieth century when nearly half of allAmericans had the trait. So what happened?
Are blue-eyed humans going the way of thedodo?Well, no. We cleared up that rumor about redheads
going extinct; the same goes for blue eyes.While the trait is becoming more rare, it's
unlikely it will disappear all together. Whichis crazy when you consider that 10,000 years
ago blue eyes didn't even exist. In fact,there's a good chance t...