The Grand Canyon is nearly 300 miles long and over a mile deep. As vast tectonic plates clash and grind against one another, a giant plateau has been pushed up over a mile in the air.
The world's most dangerous volcano, Vesuvius destroyed the Roman city of Pompeii—and new scientific discoveries show it’s capable of an eruption larger than ever before thought possible.
Travel back in time 4.5 billion years to investigate how the fledgling planet survived a cataclysmic cosmic collision to become the Earth we know.
Africa’s Sahara is the largest desert in the world and the hottest place on the planet. Explore recent geological discoveries that reveal this searing wasteland’s hidden past.
The Sierra Nevada, North America's highest mountain range, contains one of the most awe-inspiring geological features on the planet: Yosemite Valley. How was this extraordinary site created?
From Alaska to New Mexico, the Rockies are one of the great mountain belts of the world--caused by tectonic forces of the Pacific Plate pushing against the North American continent.
The single longest linear feature on Earth, the "Ring of Fire" is a 25,000-mile long string of active volcanoes stretching almost the entire length of the Pacific Ocean.
Mt. Everest is the tallest mountain on earth, as far removed from sea level as it's possible to be, and yet its sedimentary layers contain fossils of creatures that once lived on the ocean seabed.
It is not only a place of natural splendor but a geologic treasure trove as well. However, Death Valley is being pulled apart and the floor is collapsing -- and lower than sea level.
The 1980 eruption of Mt. St. Helens shocked America. More than 30 years later, scientists fear the acidic volcano may soon blow, unleashing its deadly gasses and magma again.
A prehistoric volcanic eruption in Siberia kills 95 percent of the species on Earth.
Chart the progress of different ice ages through the history of our planet, from Snowball Earth hundreds of millions of years ago to the recent ice ages.