Earth Science
Earth Science covers all facets of how the earth works, from from volcanoes to the world's oceans.
Worldwide Droughts Uncover Ancient Relics, Ruins and Remains
450 Huge Geometrical Earthworks in the Amazon Hint at Past Civilizations
Ancient Egyptians Believed Cats Had 'Divine Energy'
Is Africa Splitting in Two? Really? Here's the Scoop
What Exactly Is the Eye of the Sahara, aka the Richat Structure?
The Driest Place on Earth: Chile's Atacama Desert
10 Longest Rivers in the U.S.: From the Missouri to the Brazos
What Is the Smallest State in the USA? Looking at Area and Population
Venice Isn't Alone: 7 Sinking Cities Around the World
Where Have All the Seashells Gone?
HowStuffWorks: 10 Weird Sea Creatures
Who owns the oceans?
Learn More / Page 4
Deep underneath Antarctica, there lies a hidden lake. Roughly the size of North America's Lake Ontario, the buried landmark has inspired curiosity and controversy for decades.
By Mark Mancini
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 possible that the giant, deadly serpent hanging out at the bottom of Fosse Dionne spring is just a legend, but divers have disappeared trying to find out, so who knows?
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The curves of the Serpent Mound, Ohio state's massive and mysterious geological wonder, line up with the sun during equinoxes and solstices.
The rose-red mineral rhodonite was first discovered in the 1790s in the Ural Mountains of Russia. Today it's found globally and is associated with compassion, love and healing.
Waterfalls are mainly reliant on precipitation to keep flowing. Here are six famous waterfalls that slowed to a trickle when drought set in.
How do they measure "sea level"? Is it the average of the tides? And is the sea level actually rising or not?
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Let's say you have a lunch date to make – and it's on the other side of the planet. Wouldn't it be convenient to pop down a hole through Earth's innards? But what would really happen if you did?
Diamonds are beautiful and popular - but not everyone can afford these gems. While man-made versions are less expensive, most lack the luster and brilliance of the real thing, except moissanite. See how it compares!
By Melissa Russell-Ausley
You probably know that the North Pole does not stay in the same spot. The North and South Poles can actually change positions. What causes this? Find out in this article.
Have you ever wondered what would happen if we were able to flip a switch and turn the Earth's gravity off for a day? The end result may surprise you.
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On a planet that is 70 percent water, people don't have enough clean, safe water to drink. We're in a water crisis, and water rights are becoming a big issue. What happens if we just plain run out?
By Josh Clark
The sea scorpion may have been the largest bug to ever live on the Earth, according to a recent find. Learn more about the giant sea scorpion.
By Josh Clark
Are dinosaurs real? Most people don't have to travel too far to answer that question in the affirmative with some kind of exhibit displaying dinosaur fossils. Or simply look at any bird you can see outside your home.
Hieroglyphics used to be a language that no one -- Egyptian or otherwise -- could decipher. With the help of the Rosetta Stone, that all changed.
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Also known as "freak waves," these colossal walls of water have been alleged to be in the range of 100 feet or more. Learn what separates rogue waves from other large waves, what causes them and find out about some of the better-known rogue wave incidents.
In its purest form, it's odorless, nearly colorless and tasteless. It's in your body, the food you eat and the beverages you drink. All forms of life need it. What substance is more necessary to our existence than any other? Water.
The 1993 movie "Jurassic Park" did a good job of bringing the idea of cloning dinosaurs into popular culture. It portrayed dinosaur cloning in a way that made sense to a lot of people, but is it really possible?
Every time a new fossil is found, one of the first things scientists determine is how old that fossil really is. But how do they determine it, and how can they be completely accurate?
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Saber-tooth cats have long been likened to tigers, but they aren't tigers at all. While they share some physical traits and hunting practices with tigers, saber-tooth cats are also quite different.
One iceberg sank the unsinkable Titanic, and another exploded in front of an expedition. These floating chunks of ice carry their bulk deceptively below the surface of the water. What else are they hiding?
Archaeology is the study of humanity's material remains -- even a piece of an ancient pot can tell us a lot about the past. But how do archaeologists make sense of these relics?
By Sarah Dowdey
Glaciers are rivers of ice and are the largest moving objects on Earth. Learn about glaciers and find out how much freshwater are frozen in glaciers.
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Earthquakes and volcanoes get all the press. But the landslides they trigger are often more devastating. What makes the ground suddenly rip downhill, taking trees and homes with it?
You might never notice the relentless movement of the oceans unless their waters went eerily still. What forces drive the oceans every second of the day?