Recent discoveries have suggested that tool-making, an indicator of intelligence, was practiced by pre-human species millions of years prior to the evolution of Homo sapiens. This revelation has the ...

Learn how early humans evolved at a much faster rate than other apes, adapting larger brains as they developed new ways to socialize. Skull diversity across great apes (orange) and gibbons (blue).

Reconstructions of human evolution are prone to simple, overly-tidy scenarios. Our ancestors, for example, stood on two legs to look over tall grass, or began to speak because, well, they finally had ...