Geology

Geology is the study of the composition and physical properties of rocks, minerals, gems and other related earth materials, including diamonds and crystals. Scientists gain an understanding of the Earth's history by studying its composition.

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What’s So Special About Platinum?

This white-hot metal not only makes beautiful jewelry, it's coveted for industrial, medical and military purposes too.

The Geology Behind 5 American Landmarks

The U.S. is full of exceptional geological formations. But these five set the bar high as far as landmarks go.

Toadstools Are Mother Nature's Geological Mushrooms

You can see these rocky formations in the Badlands of Nebraska, and they're as awe-inspiring as they are eerie.

Fettuccine Rock Could Signal Life on Mars

If fettuccine rock exists on Mars, it would suggest the existence of microbial life there.

The Rockin' State Fossils Quiz

To honor their prehistoric pasts, most U.S. states have designated official state fossils, ranging from trilobites to dinosaurs. Take our quiz to learn more!

What Is Cave Popcorn?

Caves are full of incredible geological formations, including stalagmites and stalactites. But you've probably never seen anything like cave popcorn before.

5 Things You Didn't Know About Paleoart

"Will draw dinosaurs for food" is what they like to think they do. But it's actually way more complicated.

Antarctic Prone To 'Ice Quakes' Every Night, Study Finds

Scientists set up two stations to capture this strange seismic activity.

Nevada's Fly Geyser Is a Manmade Wonder

The decades-old geyser was created by accident when a geothermal company tried to drill a well. Now the strange geyser is open to tourists for the first time ever.

Mexico's Giant Crystal Cave Is Beautiful But Deadly

Massive gypsum crystals were discovered beneath Mexico's Sierra de Naica Mountain in very inhospitable environs — to humans anyway.

The Anthropocene Epoch and the Age of Humans

Many scientists believe that humans influence Earth at a rate so massive that a change to the geologic time scale is in order.

Ancient Rock Arches Sing Songs

These ancient wonders aren't static sculptures; they vibrate and shift throughout the day, creating a variety of sounds as they stretch their aging, eroding 'bones.'

Earth's Missing Crust Was Removed by Glaciers, New Study Says

Researchers hypothesize that missing rocks from the geologic record, known as the Great Unconformity, were sheared away by glaciers at a time when most — or all — of the world's surface was coated with ice.

Gigantic Undiscovered Cave Found in British Columbia

How, in today's world, could a cave this massive go undetected for so long?

What's Behind the Gemstones 'Raining' From the Kilauea Volcano

Twitter was abuzz with reports that pretty green gems were spewing out of the Kiluaea volcano in Hawaii. But the experts took the shine off these speculations.

Earthquakes on the Mississippi: The New Madrid Seismic Zone

Will a town in southern Missouri be the epicenter of the next 'big one'?

Rising Rock: Earth's Crust Has Its Own Tides, Too

The oceans on planet Earth cycle through daily tidal changes. But the ground beneath our feet experiences tides of its own, too.

The Sahara Desert Is Getting Bigger

The Sahara has expanded by about 10 percent in the past century, mostly due to natural causes, but not all. We can blame the rest on man-made climate change.

13,000-year-old Footprints Found in British Columbia

Archaeologists discovered three sets of human footprints on a remote island off the coast of British Columbia. They've now determined these footprints are the oldest in all of North America.

How Does Petrified Wood Form?

Petrified wood can be found all over the world, but how is it created?

Earth and Mars Experience Mysterious Mega-avalanches

Scientist have figured out why two historic avalanches happened on the same unlikely slopes within weeks of one another.

Mountain Heights Are Always Changing

If geology has taught us anything about Earth's history, it's that nothing is permanent. And that goes for mountain ranges, all of which are constantly rising and falling.

Most Scientists Agree Another Pangaea Is Certain, Disagree How It Will Look

Geologists agree that the world's landmasses were once all one supercontinent. Is it likely to happen again?

Scientists Identify Third-Largest Eruption in Earth’s History

The beautiful scenery in Washington state hides a darker history. It was formed by a gigantic volcanic eruption that cooled the planet.

Our World Is Rich With Places to See Real Dinosaur Tracks

Where on the planet can you visit to see with your own eyes the tracks left by dinosaurs? Fossilized dino footprints might be just outside your back door, but here are good places to start.


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