About 300,000 years ago, an early human was foraging for food in an expanse of grassland. She spied a cluster of mushrooms ...

Humans are actually limited in how much protein they can metabolize for energy, meaning early humans really needed a more well-rounded diet to survive.

Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about modern anxieties than the past itself?

Oxygen has been the most important gas in our search for life among the cosmos thus far. On Earth, we have it in abundance ...

Debunking alien claims matters, but so does telling richer, more compelling stories about how humans shaped their own past.

Astronomers have spotted a planet orbiting a star in our neighborhood of the Milky Way galaxy that presents a unique ...

A compound your body makes after drinking caffeine is now appearing in drinks. But scientists are still studying how safe and ...