The contrast is not just cosmetic, it reflects deep differences in growth, genetics and lifestyle that shaped how our species communicates, eats and survives. I want to trace how those forces sculpted ...

The footprint is ghostly but unmistakable: the shallow impression of a toddler’s foot, just 11 centimeters long, pressed into damp sand. The heel is faint, the arch not yet formed — a sign of a very ...