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 10
You could stack the Eiffel Tower, the Washington Monument and the Statue of Liberty in Crater Lake, the deepest lake in the U.S. But, do you know what the deepest lake in the world is?
The oceans take up most of the surface area of our planet and remain mostly unexplored. But how many oceans are there?
Sarah Palin never really said she could see Russia from her house. But how far is Russia from Alaska anyway? And can you see one country from the other?
By Mitch Ryan
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The seven largest countries in the world account for nearly half of the world's land area, but one is far larger than the rest. Do you know what the largest country is?
Zulu Time is a shorthand for describing a time that is the same no matter where you are in the world. So, how does that work?
By Alia Hoyt
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
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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When it comes to rivers, longest doesn't necessarily mean biggest, and length can be difficult to determine, so the top spot will always be debated.