Changes in Human Hunting Practices May Explain Human Brain Development
How Less Or Zero Big Prey Sparked Human Brain Development According to the scientists’ thesis , when early humans hunted the large animals they depended on for food into extinction, it toppled the first evolutionary domino. At the time humans first appear in the fossil record (circa two million BC), the average size of land mammals was approximately 1100 pounds (500 kilograms). The earth was overrun with hulking creatures that were slow and easy to find, which meant the first human hunters didn’t have to travel very far or work very hard to keep their social groups well-fed....
Source: ancient-origins.net