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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Cultures all over the world have treasured turquoise for its color and rarity for thousands of years - from Native American jewelry and Aztec and Mesoamerican art to King Tutankhamun's death mask.
Discover the origins of the continental drift theory and how scientists explain these geologic phenomena.
Gondwana was a humongous landmass that persisted for 300 million years before it began to break up, forming all the continents in the modern Southern Hemisphere.
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Mountain Lake in Virginia is best known for its starring role in 'Dirty Dancing.' But today, it's nothing more than a muddy pit that's all but dried up ... and geologists think they may know why.
Not all fossils are found on dry land. In fact some of the most fascinating fossil finds in history have been submerged for centuries.
By Mark Mancini
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.
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Cinnabar's bright-red pigment has been used in jewelry, pottery and makeup for millennia. But cinnabar is also the primary ore for mercury, making it a dangerous mineral if the particles are inhaled.
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?
Ash flows, deadly gases and vog are just a few of the other reasons why we all need to respect volcanoes.
It's known as the "Gateway to Hell" and while it might not actually get you there, what it will unleash if it keeps thawing could truly be hellish.
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What's the difference between moissanite and diamonds? And which of these brilliant stones wins out when it comes to the engagement ring competition?
By Mitch Ryan
Arizona isn't all desert. Take Grand Falls, aka "Chocolate Falls." It is dry most of the year, but when it rains, this waterfall pours.
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
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
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Nutty Putty Cave, near Salt Lake City, Utah, was discovered in 1960 and sealed up forever in 2009. But why?
Explore the Pacific Ring of Fire, a 24,900-mile zone with 75% of Earth's volcanoes and 90% of its earthquakes, shaped by dynamic tectonic activity.
By Mark Mancini
Curious about healing crystals and their meanings? Here's the lowdown on 12 of the most popular stones for wellbeing.
If you think the largest desert in the world is hot and sandy, think again. These 10 deserts spanning the globe are massive, but they're not all sunbaked.
By Mitch Ryan