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

By Mark Mancini

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

By Laurie L. Dove

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.

By Jesslyn Shields

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Researchers discovered that everyone's favorite prehistoric cat had some seriously big bones — even as a youngster.

By Robert Lamb

Antarctica's Blood Falls looks like a geological horror scene. For decades, scientists weren't sure why. Until now.

By Kate Kershner

Talk about a Brexit! Scientists have clues to catastrophic flooding that destroyed a land bridge that once connected England and France.

By Patrick J. Kiger

You might be in trouble when the end of the world is near, but at least your data won't be.

By Jonathan Strickland

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Surprisingly, living in a city with a high level of natural radiation doesn't have any ill effects.

By Alia Hoyt

The prehistoric penguin was the size of a small adult human, which says a lot about penguins' evolution.

By Shelley Danzy

The Cuvette Centrale peatlands hold astounding amounts of carbon scientists had never fully mapped. The new discovery emphasizes a need for protection.

By Jesslyn Shields

Decades after the massive conflict, reminders of battles linger in pristine Pacific waters.

By Christopher Hassiotis

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Recent icebergs and unexpected glacial rifts are indicating that something troubling is going on beneath the ice.

By Jesslyn Shields

Science has determined that disappearing completely into quicksand isn't possible — but that doesn't mean that getting stuck still won't kill you.

By Patrick J. Kiger

Sea level change, plastic pollution and invasive species aren’t just political issues — they’re likely signs of a new epoch called the Anthropocene, geologists say.

By Jonathan Strickland

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Snorkelers found what looked to be the ancient ruins near the Greek island of Zakynthos, but not all that glitters is gold.

By Jesslyn Shields

Decades of fossil discoveries have revealed much about the extinct members of our hominid family tree, but we're far from having all the answers. What have we learned from some of these fascinating finds?

By Jane McGrath

You likely heard that paleontologists uncovered a cache of dinosaur embryos, bone fragments and eggshells in China. You also may recall that we've made crazy leaps forward in genetics and genomics. Can we put the two together and create a dinosaur?

By Nicholas Gerbis

From the Hope diamond to the shiny bits in instant coffee, crystals have always held the power to fascinate us humans. Are they more than just a bunch of pretty facets?

By Nicholas Gerbis

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From dinosaur skeletons to petrified wood, fossils help us learn about prehistoric creatures' anatomy and physiology. See pictures of incredible examples of fossils from around the world.

By HowStuffWorks.com Contributors

Anthropologists specialize in, well, us. But studying humankind doesn't mean you have to hole up in a library or laboratory. Take a peek at this article to learn more about the dynamic, enriching field of anthropology.

By Nathan Chandler

When it comes to fossils, specimens like Sue the Tyrannosaurus rex grab much of the attention. And while Sue is a staggering 67 million years old, she's a new kid on the block, compared to some of the oldest fossils ever found. What's older than Sue?

By Jonathan Atteberry

At best, fossilization is a long and tricky process that mineralizes an occasional Tyrannosaurus rex or other extraordinary find. How has that affected our chances at charting a model of life itself?

By Robert Lamb

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It's easy to trace the evolution of the automobile. Your family tree poses a whole different challenge. Even an extensive genealogy chart can only reach back so far. So how do we chart the evolution of the human race?

By Robert Lamb

Crack open any science textbook and the authors will tell you that such things don't happen. So how did a couple of paleontologists and an acid bath turn that widespread belief on its head?

By Robert Lamb