After learning about igneous and sedimentary rocks, Savannah and Sam learn about the final main kind of rock: metamorphic rocks. And they review how each of these rocks can turn into another!

Squeaks is looking to plan his next vacation. Jessi tells him all about the amazing volcanoes you can find in

Silfra Fissue in Iceland is a remarkable place where the Earth is tearing itself apart. Here, intrepid divers can reach out and touch two continents at once. But... should they?<b<br/>r/>

Hosted by: Reid Reimers (he/him)

Plate Tectonics Explained

From Stargate to Interstellar, wormholes are our favorite method for traveling across fictional universes. But they are also a very serious field of study for some of our greatest minds over the last century. So what’s the holdup? When...

There was a time in Earth’s history that was so stable, geologists once called it the Boring Billion. But the fact is, this period was anything but boring. In fact, it set the stage for our modern version of plate tectonics - and...

What's the tallest mountain on Earth? It might seem like an easy question to answer, but in reality it's one that brings up more NEW questions than answers. It turns out that the way we measure mountains rests on a lot of approximations,...

Deep in a Sardinian mine, researchers are constructing an experiment that hopes to solve what's known as The Worst Prediction In The History of Physics, and pin down the true identity of dark energy.

One of the toughest materials known to science is made not by humans, but by nature... and it's inside of oysters.

Some of the largest creatures that have ever lived on earth thrive by eating tiny prey. Why don’t they eat bigger fish, and how can they even consume these things they can barely see? Here are 5 creatures that grow to be giants by eating...

We can learn a lot from dinosaur fossils, but figuring how they behaved is a real challenge.

Did you know that in about 200 million years, Earth is due for another supercontinent? What exactly that supercontinent will look like, though, depends on a lot of geological factors, and is harder to guess at than you might think!...

If you take a look at a map of Scotland, you'll notice an eerily straight line running through the highlands, this is the Great Glen Fault the product of half a billion years of time and geology.

Michael Pollan's bestselling book "In Defense of Food" was a call to arms for making real food a bigger part of Americans' diets. Now he takes that push to PBS with a new documentary. He joins Jeffrey Brown to discuss why we’ve lost the...

In the early 20th century, Alfred Wegener's theory of Continental Drift laid the foundation for our modern theory of plate tectonics. And today we know something even more exciting: Pangea was only the latest in a long lineage of...

Let's talk about the mysterious zero-point energy and what it really can, and really can't do.

The earth is our home, and while we like to think we know a good deal about it, there are still some mysteries that scientists are looking to unravel.

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Some of the largest creatures that have ever lived on earth thrive by eating tiny prey. Why don’t they eat bigger fish, and how can they even consume these things they can barely see? Here are 5 creatures that grow to be giants by eating...

When he was just 14 years old, Malawian inventor William Kamkwamba built his family an electricity-generating windmill from spare parts, working from rough plans he found in a library book.

The ground under our feet is constantly moving, and to measure these movements, researchers have turned to an unlikely helper: quasars that are millions of light-years away.

With acidic puddles, lava lakes, and one of the most important early hominid discoveries, the Danakil Depression is home to all of the extremes.

In about 200 million years, Earth is due for another supercontinent. What exactly that supercontinent will look like, though, depends on a lot of geological factors, and is harder to guess at than you might think! Today, SciShow walks...

This week on SciShow Space News, researchers have figured out which gas drives fire fountain eruptions on the Moon. And you can send a message or your name to the Moon or Mars!

In this video Paul Andersen explains how electric force on an object inside a field can be calculated by multiplying the charge of the object (in C) times the electric field strength (in N/C).