The Arab-Israeli Conflict, which is the ongoing political tensions and military conflicts between Arab nations and Israel, is one of the longest and most complex disputes in the world. Today, we're going to focus on more recent events,...

There's two times more carbon in the earth's soil than in all of its vegetation and the atmosphere -- combined. Biogeochemist Asmeret Asefaw Berhe dives into the science of soil and shares how we could use its awesome carbon-trapping...

One day, Persephone was frolicking in a meadow with the nymph, Cyane. As they admired a flower, they noticed it tremble in the ground. Suddenly, the earth split, and a terrifying figure arose. It was Hades, god of the underworld. He...

Dive into the world of aquaculture and see how restorative ocean farming could play a vital role in helping our coastal communities, our oceans and our climate. -- For billions of people, seafood provides a significant source of...

Today we're going to take a closer look at ecosystems -- which are communities of living organisms in an area interacting with their environment -- and how this relationship between the amount of energy a place receives and the movement...

In this hilarious, whirlwind tour of the last four billion years of evolution, paleontologist and TED Fellow Lauren Sallan introduces us to some of the wildly diverse animals that roamed the prehistoric planet (from sharks with wings to...

Remember Sol, the closest star to Earth? We like to call it The Sun and we haven't talked about it in a little while. One interesting thing about the energy we get from the sun is that it's not absorbed the same way by different...

Mister Brown and Squeaks learn all about glaciers, and the clues they leave behind when they melt!



Science and Engineering
Practices:
Developing a

nd Using Models

>Disciplinary Core...

Do you like to go hiking like Jessi and Squeaks do? Have you ever wondered how those mountains you're hiking on got there? Check out this episode to learn how mountains form, and how mountains can keep growing!

When you look at a picture of Mars next to a picture of Earth, you might notice one big difference: Earth is covered in blue oceans and Mars doesn't seem to have any water at all! But scientists have discovered all kinds of...

Fish-eating trees sound like they’re straight out of science fiction. But they’re a real thing—one that exists right here on Earth. And they show just how interconnected life on this planet is.

We know whales as graceful giants bound to the sea. But what if we told you there was actually a time when whales could walk.

Dr. Ellen Ochoa is incredible! She published over a dozen papers, co-filed three patents, and was a NASA engineer, all before becoming an astronaut and spending nearly a thousand hours in space.

Which Came First - The Rain or the Rainforest

Nature creates some pretty amazing things, and one of the largest of these is The Grand Canyon!

Hank tells us about the enormous concentrations of plastic debris floating around in the Pacific Ocean, why they're there and why they're a problem.

Join Jessi, Bill and Webb to learn all about the place we call home!

In 1776, a powerful empire was born in North America. The Lakotas had reached the Black Hills, the most sacred place and most coveted buffalo hunting grounds in the western plains. Located in what is now South Dakota, control of the...

In which John teaches you about the Seven Years War, which may have lasted nine years. Or as many as 23. It was a very confusing was. The Seven Years War was a global war, fought on five continents, which is kind of a lot. John focuses...

In which John Green teaches you about some of the colonies that were not in Virginia or Massachussetts. Old New York was once New Amsterdam. Why they changed it, I can say; ENGLISH people just liked it better that way, and when the...

the Catlin Seaview Survey will be taking thousands of 360 degree panoramas of the Great Barrier Reef, not just for science, but so that every person with an internet connection can experience the world's largest structure...at least...

Over the last four episodes, we’ve examined some of the stories that make up the idea of a “revolution” in knowledge-making in Europe. But we can’t understand this idea fully, without unpacking another one—the so called Age of...

In 1910, 90% of Black Americans lived in the South. By 1940, around 1.5 million Black Americans had left their homes, and 77% lived in the South. By 1970, 52% of Black Americans remained in the South. People moved away for many reasons,...

In which John Green teaches you about conflict in Israel and Palestine. This conflict is often cast as a long-term beef going back thousands of years, and rooted in a clash between religions. Well, that's not quite true. What is true is...