Zabargad Island in the Red Sea is so crusted with peridot that it's fair to say the place is literally made of it. <br/>

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...

Over 600 million years ago, sheets of ice coated our planet on both land and sea. How did this happen? And most importantly for us, why did the planet eventually thaw again? The evidence for Snowball Earth is written on every continent...

In some places, the rocks below the Great Unconformity are about 1.2 billion years older than those above it. This missing chapter in Earth’s history might be linked to a fracturing supercontinent, out-of-control glaciers, and maybe the...

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,...

Fifty years ago, we sent the first astronauts to walk on the moon’s face. But what they brought back is just as important as what got them there. I’m talking about moon rocks, guys. And I got to go visit NASA’s lunar sample vault to...

If you take a look at all the impact craters in our solar system, the vast majority are nice, neat circles. But why? Meteorites and asteroids strike planets and moons at all sorts of angles. Where are all the elliptical craters?

Humans may use fiber optic technology to make everything from novelty desk toys to high speed internet cables, but Nature has its own ideas. For decades, scientists have debated to what extent polar bears may use the optical properties...

Saturn's rings are younger than Saturn, and the most spectacular sight in the Solar System is also disappearing. How do we know? By running our finger through some cosmic dust.

Lots of geological forces need to come together for continents to form, but they all require one ingredient: water.

When you learned about the Earth’s interior in school, you were probably shown a diagram that looked like a perfect layer cake. But we've known for a long time that that diagram is... inaccurate at best, and leaves out information that...

Hoboro Island off the coast of Japan may soon be an island of the past, and it’s primarily due to one unsuspecting isopod.

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

2018 was full of exciting discoveries and incredible advancements in the field of science. So today, we are taking a look back at 2018 to highlight three more great science news stories!

For the last hundred and fifty years or so, geologists have been trying to wrap their heads around the mystery: in some places, the geologic record just seems to jump by over billion years. And last week, a paper was published that may...

Olympic National Park is temporarily closed as Washington, the US, and the world work to mitigate the spread of the COVID-19 virus. We filmed this series in early January and are currently at home practicing social distancing. We hope...

What do astronomers look for when they study exoplanets for signs of alien life? Hank explains how space telescopes are already yielding tantalizing clues of what other worlds might hold -- including water! -- and how the next generation...

If you're lucky enough to find a glowing rock, it likely doesn't mean you're the chosen one. In fact, it could have to do with one of these five phenomena! Learn about the quantum mechanics of glowing rocks in this new SciShow Episode...

If the 10 kilometer wide asteroid that hit the Earth 66 million years ago hit just a few minutes later, would the outcome of the living creatures here have been different?

What's happening inside our ears when we can hear that ringing? What's happening inside our brains? Sit back, clean the wax out of your ears, and let Michael Aranda explain! ----------

Rocks are more than just rocks, they're the key to Earth's history!

Have you ever wondered how our earth was created? Here is a brief history about the Earth.

In which Hank celebrates the landing of the Mars Curiosity Rover, which, if you were following SciShow on Twitter, you know was pretty freaking cool. So here are the Top Five Coolest Things about the Mars Curiosity Rover!

Scientific discovery often dabbles in the extreme, challenging and exceeding what we think of as "possible." And this year's discoveries were no different! We present to you three scientific discoveries made this year that set out to...