Hidden in rocks once thought too old to contain complex life we may have found the animal kingdom’s oldest known predator.

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...

In the middle of the Cambrian, life on land was about to get a little more crowded. And those newcomers would end up changing the world. The arrival of plants on land would make the world colder, drain much of the oxygen out of the...

420 million years ago, the forest floor of what's now New York was covered with a plant that didn’t look like a tree at all, except its roots were made of wood. Instead of looking up to learn about the evolution of trees, it turns out...

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

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

What on earth is a xenophyophore? It's a single-celled organism that unlike what you might think is NOT microscopically small. In fact, these ocean dwellers are a little heftier than that! Learn all about them in this new episode of...

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...

Do you want to know how some of Earth's most fascinating mysteries have been solved by science? Join us and learn about 5 thought-to-be unexplainable mysteries—explained! Hosted by Hank Green.

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 a tree falls into the forest and doesn't decompose, what happens to it?

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?

If salty water is constantly spilling into the world’s oceans, does that mean they are getting saltier by the day?

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

There are 118 elements on the periodic table, but it seems like only a handful of them get any attention. But just because you haven't heard of an element doesn't mean that it isn't a vital part of everyday life! Learn about these lesser...

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

Fossils aren't just something you find at dig sites. Correction: 3:03 Actually, it was the American Museum of Natural History. But it was a Bruce Museum curator who found it!

Chitons are constantly scraping their teeth on rocks to eat the algae off of them, but that means their teeth need to be pretty tough. And it turns out one species's teeth are the hardest, stiffest biominerals in any living thing we've...

There are still several fascinating mysteries of our universe unsolved by scientists even after decades and even centuries of research! Join Olivia Gordon for a new episode of SciShow and learn about these seven weird phenomena that...

There are some geological areas on the planet that scientists still don't understand. For most things it's pretty clear—combine a volcanic eruption a dash of erosion, and boom, you’ve got a striking cliff! But not all the features on...

We’ve sent thousands of things into space over the years! Many of them just orbit the Earth, and some are flying out past the edges of the Solar System. In this episode, we present our favorite currently active space probes!

Looking at a map, you would never know that North America once almost ripped itself in half. But 1.1 billion years ago, it tried to - and had it succeeded, there would now be an ocean where Lake Superior is!

It turns out life may have gotten its start pretty early in Earth's history, and while the first couple billion years saw several important developments, the period was still dominated by very simple life forms. This is our first...