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11 Pretty Awesome Facts About the Pacific Ocean

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It covers more than 30 percent of the planet, and is home to all kinds of sea creatures. What other facts make the Pacific Ocean so amazing?

Venice Isn't Alone: 7 Sinking Cities Around the World

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Subsidence, or the decline in the elevation of land surface, is creating a problem for some coastal cities as sea levels rise.

Is Greenland Part of North America? Geologically, Yes

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Greenland is one of the most unique places on Earth, and it often sparks a big geographical question: Is Greenland part of North America?

What's a Subduction Zone? Everyone in the Pacific NW Should Know

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A subduction zone can shake things up — literally. These geological features are responsible for some of the most intense earthquakes, volcanic eruptions and tsunamis.

Gliese 581c: The First 'Earth-like' Planet Found

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Gliese 581c was one of the first "Earth-like" planets found, back in 2007. It generated a lot of excitement then but what about now?

The Ring of Fire Is the Pacific's Volcanic Hotspot

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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.

Pluto: Is It a Planet After All?

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Back in 2006, the International Astronomical Union decided to demote Pluto to the status of a dwarf planet. A historical study challenges that designation.

12 of the Most Destructive Earthquakes

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Earthquakes and their resulting aftershocks can be devastatingly destructive. Earthquakes are caused when a fault in the Earth's crust slips, which releases energy waves in the ground. Find a list of 12 of the most destructive earthquakes in history.

Are There Diamonds in the Ocean?

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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.

Why Are Planets Almost Spherical?

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None of the planets in our solar system are perfect spheres, nor for that matter is our sun. Learn more about oblate spheroids at HowStuffWorks.

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