Blue, green, amber: Someone’s eye color immediately attracts our attention. But there’s something unusual about human eyes: ...
For most of human history, green eyes didn’t exist. Understanding why they do now means rethinking what we know about evolution itself.
People have been trying to figure out personality traits from physical features since the dawn of humanity—or at least since ...
Add Yahoo as a preferred source to see more of our stories on Google. For most of human history, green eyes didn’t exist. Understanding why they do now means rethinking what we know about evolution ...