Plastic is a huge problem in the oceans, but engineers and research groups are working on how to deal with it. Hank describes some of the leading proposed solutions.

Why is Earth is a blue planet? Because it's covered in water! Where did Earth's water come from? Of course, water isn't unique to our planet. The origin of water traces beyond the solar system to the earliest days of the universe. Here's...

Using low-cost virtual reality, education activist Jessica Ochoa Hendrix helps bring science to life in schools across the US. In this quick talk, she explains how a VR experience she developed invites students to explore underwater...

Hundreds of meters below the surface of the ocean, Laura Robinson probes the steep slopes of massive undersea mountains. She's on the hunt for thousand-year-old corals that she can test in a nuclear reactor to discover how the ocean...

What if we could harness the sticking powers of sea creatures like mussels, oysters and barnacles, which refuse to budge even on wet, stormy coastlines? Dive into the wonderful world of animals that make their own glue and cement with...

You know you’ve wondered. Do fish actually pee? And what does that make the ocean… one big toilet?

Earth didn't have water when it formed, but it does now! How did it get wet?

We all know tides have something to do with gravity from the Moon and Sun, but if gravity affects the motion of all objects equally, then how come oceans have large tides while other bodies of water don't? It's because your mental...

You've filled up your cart and made it to the front of the grocery line when you're confronted with yet another choice: what kind of bag should you use? It might seem obvious that plastic is bad for the environment, and that a paper bag...

Learn about the famous red hat wearing underwater explorer Jacques Cousteau!

In 1963, Jacques Cousteau lived for 30 days in an underwater laboratory positioned on the floor of the Red Sea, and set a world record in the process. This summer, his grandson Fabien Cousteau broke that record. Cousteau the younger...

There’s no doubt that fish is a great source of protein in one’s diet. But the debate about whether fish farming or commercial fishing is worse for the environment continues and, as you might suspect, there isn’t a straightforward answer.

For centuries, billiard balls were made of ivory from elephant tusks. But when excessive hunting caused elephant populations to decline, they began to look for alternatives. John Wesley Hyatt took up the challenge. In five years, he...

SciShow Space takes you on a tour of Venus, a world with such an extreme environment that you might call it "Earth's evil twin."

Thanks to the St. Croix Watershed Research Station for sponsoring this video! To learn more about their work, visit https://www.smm.org/scwrs/. Aquatic cyanobacteria first oxygenated earth’s air, making human life possible; now, due to...

The ocean is a naturally noisy place full of singing whales, grunting fish, snapping shrimp, cracking ice, wind and rain. But human-made sounds -- from ship engines to oil drilling -- have become an acute threat to marine life, says...

Squeaks and Mister Brown have a leaky faucet! Luckily this is a great chance to learn about how they can save water. SOURCES: Second Grade Next Generation Science Standards Disciplinary Core Idea: ESS2.C: The Roles of Water in Earth’s...

We’ve gotten maybe too good at fishing, and as a result we’ve completely transformed the oceans. So what can we do to make fishing more sustainable and still enjoy our fish and chips?

We have a lot of water on Earth, but we also can't actually drink much of it... or use it for farming. That's because most of the water on Earth is saltwater. We humans, like a lot of living things, need freshwater to survive. In this...

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 clues that...

Meet the "Row-bot," a robot that cleans up pollution and generates the electricity needed to power itself by swallowing dirty water. Roboticist Jonathan Rossiter explains how this special swimming machine, which uses a microbial fuel...

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

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...

Hank introduces us to Alfred Wegener, a voraciously curious guy who proposed the original theory of continental drift - and was laughed at for it.