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.
Why Is the Thwaites Glacier Called the 'Doomsday Glacier'?
The Surge in Fossil Fuels Could End Radiocarbon Dating
Arizona's Grand Falls Gushes to Life Again
This Sacred Quarry Is a Cornerstone of Native American Spirituality
Was the Cullinan Diamond a Royal Gift or Stolen Gem?
Everyone's on the Hunt for the Element Lithium
Velociraptor Alert: The Feathered Dinosaur Quiz
River-bottom Bones: The Strange World of Underwater Fossil Hunting
There's a Rhino-shaped Cave in Washington State
Learn More / Page 3
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.
Will a town in southern Missouri be the epicenter of the next 'big one'?
By Mark Mancini
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.
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.
Antarctica's Blood Falls looks like a geological horror scene. For decades, scientists weren't sure why. Until now.
Talk about a Brexit! Scientists have clues to catastrophic flooding that destroyed a land bridge that once connected England and France.
You might be in trouble when the end of the world is near, but at least your data won't be.
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.
The Cuvette Centrale peatlands hold astounding amounts of carbon scientists had never fully mapped. The new discovery emphasizes a need for protection.
Recent icebergs and unexpected glacial rifts are indicating that something troubling is going on beneath the ice.
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.
The uncut gem is 3 billion years old and may fetch $70 million.
Snorkelers found what looked to be the ancient ruins near the Greek island of Zakynthos, but not all that glitters is gold.
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?