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5 Most Amazing Caves
science.howstuffworks.com/environmental/earth/geology/5-amazing-caves.htm
The Doll's Theater of Carlsbad Caverns looks otherworldly and took ages to form. What other incredible sights await us below ground?
What If We Drilled Into a Supervolcano?
science.howstuffworks.com/science-vs-myth/what-if/what-if-we-drilled-into-supervolcano.htm
What could happen if we poked one of these sleeping giants? There are two scenarios. One is good. One is very, very bad.
How did Lake Nyos suddenly kill 1,700 people?
science.howstuffworks.com/environmental/earth/geophysics/lake-nyos.htm
One evening, people heard their local lake rumbling. A day and a half later, 1,700 people were dead. What happened on that fateful night?
Are There Diamonds in the Ocean?
science.howstuffworks.com/environmental/ocean-diamonds.htm
Not all diamonds are found on dry land. Many turn up in sediments below the ocean's surface. You just have to know where to look.
The Largest Tsunami Ever Recorded Only Claimed 2 Lives
science.howstuffworks.com/nature/natural-disasters/largest-tsunami-ever-recorded.htm
If you're lucky, you've never seen a tsunami in person, but you know that this type of massive wave can cause enormous damage. They can be measured, too, which easily leads to the question: What was the largest tsunami ever recorded?
Climate Change Threatens the Moai of Easter Island
The statues of Easter Island have stood for over 800 years. See how climate change and rising seas are affecting them with HowStuffWorks.
Cinnabar: Red, Beautiful — and Toxic
science.howstuffworks.com/environmental/earth/geology/cinnabar.htm
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.
The Blue-footed Booby Dance Gets the Girl Every Time
animals.howstuffworks.com/birds/blue-footed-booby.htm
The blue-footed booby is known as much for its comical mating dance as for its intensely colored blue feet.
There's a Rhino-shaped Cave in Washington State
science.howstuffworks.com/environmental/earth/geology/rhino-shaped-cave.htm
It's perhaps one of the strangest fossils ever discovered. We'll explain how it came to be 15 million years ago, and how hikers found it in the '30s.
The Stratosphere Is Home to Earth's Ozone Layer
science.howstuffworks.com/environmental/earth/geophysics/stratosphere.htm
The stratosphere is one of Earth's five atmospheric layers that also includes the troposphere, mesosphere, thermosphere and exosphere.