Brain Size

Previous research estimated that, over the past 20,000 years, the average volume of the human brain went from 1,500 cubic centimeters (cc) to 1,350 cc — shrinking by about 150 cc, or 10% (the size of a tennis ball, as commentators have pointed out.)

“Most ...

Researchers have found that for much of human evolutionary history our brains kept growing. In fact, if you count from our last shared ancestors with chimpanzees six million years ago, the human brain size almost quadrupled. This happened thanks in part to the im...

The research team focused specifically on creating computational models that represent patterns of worker-ant brain size and energy use, looking at groups of Oecophylla weaver ants, Atta leafcutter ants, and the common garden ant Formica. What they found is that colle...