A hidden force let humans smash a barrier that had trapped our ancestors for millions of years.

The Roman-era longhouses were built along a popular trade route from the time in an area where most people lived on isolated farmsteads.

We mine more sand every year than any other solid material, and scientists warn that we’re taking more than the planet can replenish.

One of Earth’s oldest plants appears to pass electrical messages through its dense green mats.

The Colorado River is approaching thresholds its dams were never meant to cross. What happens next could transform how water and electricity move across the American Southwest.

One highlight was a massive cannon from the Ming dynasty.

Inside the lab, they searched for faint traces that might connect it to the aviator’s lost Electra.

A single missing gene hints that the eyeless fish spent eons deep in the aquifer below.

Researchers think it will provide new information on ancient customs.

The country has planted a bunch of new trees since 1981, but that extra foliage is shifting more precipitation to some areas while drying out others.

Now, researchers finally solved a decades-long mystery about our vision.

Our minds evolved to survive. But their inner workings have astonishing—and sometimes disturbing—consequences for everyday life.

Up to 3 million people once lived here. The jungle hid their monuments for 2,000 years.

These otherworldly orbs of light in the Chihuahuan Desert have perplexed locals for more than a century, but modern science has a more mundane explanation. 

A social experiment found that people acted more chivalrous when someone dressed as the Caped Crusader was nearby. 

The objects suggest that humans entered South America thousands of years earlier than previously thought.

We are what we are because of ancient and mysterious genetics.

The discovery could change how we think about one of humanity's oldest relationships.

Genes are known to move within an organism, but between organisms—that’s another story.

While digging deeper for more space, this family uncovered relics from a civil war.