It takes a huge amount of energy for human brains to grow to their current large size and be maintained over time. Our early human ancestors evolved to grow bigger brains, but the biological changes ...

A new laboratory study in mice suggests that primates like humans evolved large brains with a helping hand from microbes that live in the gut. When you purchase through links on our site, we may earn ...

Humans don't have hollow bones like birds do, so how big would our wings have to be to lift us off the ground? When you purchase through links on our site, we may earn an affiliate commission. Here’s ...