The land bridge created by mantle-driven uplift gave early primates and other animals opportunities to branch out.

A weathered sign in the Minnesota River Valley proudly proclaims: “World’s Oldest Rock.” Erected in 1975, it marks a 3.8-billion-year-old gneiss — or so scientists thought.

When a massive, black patch, known as a polynya, was spotted by NASA scientists for the first time, satellite operators were ...

Strangest of all, scientists have found that its gusts of gas are loaded with tiny crystals of metallic gold, no larger than 20 micrometers. Over the course of a single day, it's estimated that the ...

Imagine stepping onto the icy shores of ancient Antarctica—not to see today’s tuxedoed, knee-high Emperor penguins, but to ...

Though these openings are not uncommon in polar regions, the size and duration of the Maud Rise polynya make it particularly ...

Sailing through the narrow channel of Neptune’s Bellows into the flooded horseshoe-shaped volcanic caldera that is Deception ...

A giant sequoia located in Sequoia National Park in California, the General Sherman is 52,500 feet in volume and is more than ...

Check out 24 of the world’s must unusual landscapes — from the hellish Darvaza Gas Crater in Turkmenistan to the “snow ...