Earth Science

Earth Science covers all facets of how the earth works, from from volcanoes to the world's oceans.

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Red Tide Menaces Florida Coast

Harmful algal blooms wreak havoc in oceans around the world and occur nearly every summer along the coastline of Florida.

What's Behind the Gemstones 'Raining' From the Kilauea Volcano

Twitter was abuzz with reports that pretty green gems were spewing out of the Kiluaea volcano in Hawaii. But the experts took the shine off these speculations.

5 Things You Didn’t Know About the Summer Solstice

June 21 marks the summer solstice, the longest day of the year. There's even a midnight baseball game in Alaska to celebrate the 24 hours of sunlight.

Anthropologists Discover Mummified, Green Baby Hand

And it turns out their strange discovery has a straightforward explanation: copper.

Earthquakes on the Mississippi: The New Madrid Seismic Zone

Will a town in southern Missouri be the epicenter of the next 'big one'?

Rising Rock: Earth's Crust Has Its Own Tides, Too

The oceans on planet Earth cycle through daily tidal changes. But the ground beneath our feet experiences tides of its own, too.

Who Was Alexander von Humboldt and What Is the Humboldt Current?

He might be the most important scientist you've never heard of, but the ocean current that bears his name helped shape the development of evolutionary theory.

The Sahara Desert Is Getting Bigger

The Sahara has expanded by about 10 percent in the past century, mostly due to natural causes, but not all. We can blame the rest on man-made climate change.

Why Are Whales So Big?

Blue whales are the largest mammal ever known to exist on Earth. So what makes these creatures so huge?

Why Is the Ocean Different Colors in Different Places?

Ocean water is not actually blue, but appears in different shades for many reasons.

13,000-year-old Footprints Found in British Columbia

Archaeologists discovered three sets of human footprints on a remote island off the coast of British Columbia. They've now determined these footprints are the oldest in all of North America.

Which Ocean Is the World’s Smallest?

Water covers about 71 percent of Earth's surface, but do you know the difference between an ocean and a sea? And which ocean is the smallest?

What Is the World’s Shortest River?

Ever wondered what's the difference between a river, a stream, a brook and a tributary?

How Does Petrified Wood Form?

Petrified wood can be found all over the world, but how is it created?

5 Reasons Why the Great Lakes Are So Great

The Great Lakes are named so for several reasons, including shipwreck preservation, fresh water and even birdwatching.

Are Mist and Fog the Same?

Fog and mist are similar scientifically. But what makes them different?

99 Percent of Great Barrier Reef Green Sea Turtles Are Hatching Female

A new study showed an alarming imbalance in the male-to-female ratio in green sea turtles hatching at the Great Barrier Reef. Scientists believe climate change is to blame.

Earth and Mars Experience Mysterious Mega-avalanches

Scientist have figured out why two historic avalanches happened on the same unlikely slopes within weeks of one another.

Why Do Scientists Think We're Nearing the End of the World?

The Bulletin of Atomic Scientists moved the Doomsday Clock ahead 30 seconds to two minutes before midnight. What bumped up the time again this year?

Tibetan Glacial Ice Core May Hold Clues About Climate Change

Scientists from The Ohio State University have drilled longest ice core from outside the poles.

5 Things You Didn't Know About the Winter Solstice

For centuries, ancient cultures celebrated the winter solstice, the shortest day of the year, as the "day the sun came back." Here are 5 enlightening facts about the winter solstice.

We've Finally Recorded the Hum at the Bottom of the Sea

Although we've known it exists for decades, nobody knows exactly why there's a humming noise at the bottom of the ocean. But we're one step closer now that scientists have been able to record the sound underwater.

Mountain Heights Are Always Changing

If geology has taught us anything about Earth's history, it's that nothing is permanent. And that goes for mountain ranges, all of which are constantly rising and falling.

Most Scientists Agree Another Pangaea Is Certain, Disagree How It Will Look

Geologists agree that the world's landmasses were once all one supercontinent. Is it likely to happen again?

Scientists Identify Third-Largest Eruption in Earth’s History

The beautiful scenery in Washington state hides a darker history. It was formed by a gigantic volcanic eruption that cooled the planet.


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