Humans lost their ability to synthesize their own vitamin C because our ancestors had access to plenty of fruit.

When Homo sapiens appeared some 300,000 years ago, at least six other human species already shared the planet. Here, in the studio of paleoartist John Gurche, are model representations of those ...

If the world feels out of control, dystopian, or even apocalyptic, it's possible to change course. The fate of the human species may be at stake!

If we look across the whole of the mammal branch of the tree of life we find there are many groups of mammals that have evolved testicles of all different sizes. In almost all these separate cases, ...

Fire is an ancient natural phenomenon that has shaped our planet for more than 400 million years. It alters habitats, affects ...

Humans have been around on Earth for thousands of years, but there was a period when humanity was almost wiped out of ...

Fire is an ancient natural phenomenon that has shaped our planet for over 400 million years. It alters habitats, affects the ...