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
Native Americans have quarried red pipestone from the land that is now Pipestone National Monument for centuries. What makes this particular stone so sacred?
Scientists are concerned that the Thwaites Glacier is melting at a rapid pace, though some don't love the name "Doomsday Glacier." What does the rapid melt of this huge glacier mean for the future of our planet?
By Mark Mancini
It was the world's largest diamond when mined and today it's cut into nine gems that are all part of the British Crown Jewels. But since the death of Queen Elizabeth II, questions have emerged about its imperialist history.
By Dave Roos
Radiocarbon dating is a cornerstone of climate and archaeological sciences. But it could be threated as fossil fuel emissions negate the useful signal from atomic tests.
Split as if by a laser, the Al Naslaa rock in Saudi Arabia's Tayma Oasis baffles scientists and amateur geologists alike. How did this perfect split happen?
Trovants, found only in a small town in Romania, are stones that actually seem to move and grow. But are they alive?
Waterfalls are mainly reliant on precipitation to keep flowing. Here are six famous waterfalls that slowed to a trickle when drought set in.
Nutty Putty Cave, near Salt Lake City, Utah, was discovered in 1960 and sealed up forever in 2009. But why?
By Dave Roos
This beautiful pink quartz is found in numerous places throughout the world and is thought to be associated with unconditional love.
This ancient rock, which forms above copper deposits, is beloved for its swirling patterns and vibrant green color. It's dazzled humans for millennia as jewelry and even in décor.
This ancient rock adorns King Tut's coffin and the Sistine Chapel. And at one time it was more precious than gold. What is it about this deep blue rock that has drawn us in for centuries?
It's found all over Earth — and Mars, too. It's the main source of iron but is also used in jewelry and painting. Get to know the amazing mineral hematite.
Drones are helping researchers bolster scientific understanding of the ecology of a greening Arctic.
One term might give you the impression of something grand and mysterious, while the other makes you think of claustrophobia-inducing environs that threaten human life. But what's the real difference?