Earth Science

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


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.

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.

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

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

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

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 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.

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

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

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.

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?

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

The spring, or vernal, equinox traditionally marks the first day of spring — but climate scientists use a different date altogether. Find out more about this and other facts we've gathered for your astronomical pleasure.

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

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

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

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.

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

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?

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

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.

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.

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.

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

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