One recent morning near the mouth of a canyon in southwest Colorado Springs, Christine Siddoway placed a few peculiar rocks in a parking lot and a dozen strangers gathered around. “That’s pretty,” one ...

While rising seas are a global issue, China faces a unique double threat, he said. Many of its largest and most economically ...

Study warns that humans may be driving Earth toward a sixth mass extinction. The research shows species loss, but the future ...

A study of geological records reveals that sea levels are rising at their fastest rate in 4,000 years, underscoring the ...

From desert carvings to underwater ruins, these ancient structures are so advanced that experts still can’t agree on what ...

Controversial evidence hints that complex life might have emerged hundreds of millions of years earlier than previously ...

Just 20,000 years ago, coastlines stretched farther, whole land bridges connected continents, and massive glaciers reshaped the map. This is the world as it looked during the last Ice Age.

Off the coast of Antarctica, the sea ice retreated toward the southernmost continent and, like a bottle cap taken off a soda ...

A new study shows farming and livestock reshaped global mammal communities, collapsing natural boundaries after the last Ice ...

Buried deep in Greenland's ice sheet lies a puzzling chemical signature that has sparked intense scientific debate.

The extinction of the Pleistocene megafauna may be people’s fault after all, according to a recent study. A team of archaeologists recently examined animal bones at sites dating to the waning years of ...

An annual hiking challenge is back this October, encouraging people to get outside and enjoy the fall colors along the Ice Age National Scenic Trail in Wisconsin. The Ice Age Trail Alliance's Mammoth ...