My 9-year-old daughter has stumped me with a question. She asked me why the shape of eyelids differ in different races. She used the example of Japanese versus Caucasian people. Any thoughts?
(Continued)
• I was surprised that neither of the answers published (15 February) mention sexual selection, Darwin’s other great insight into evolution.
A memorable passage in Jared Diamond’s Guns, Germs and Steel quotes a man from the New Guinea highlands on the great beauty of the local women, with their tight curly black hair, their eyes very close together, and their noses spread right across the face. He…
