Marie Tharp's topographical maps increased our understanding of both the ocean floor and the processes that move the earth's crust.

Hank describes the desperate need many organisms have for nutrients (specifically nitrogen and phosphorus) and how they go about getting them via the nitrogen and phosphorus cycles.

So, what happens when there's not enough water? Well... not good things. Do we let homes have more water for showering and cooking? Or do we let farms have the water for growing crops? There aren't any easy solutions, but today Sabrina...

The equator is a clear and accurate line around Earth that makes measuring latitude a precise science, but when it came to figuring out how to do that with longitude, British sailors were at a loss. Until they devised a competition.

People have been exploring the oceans since prehistoric times, way before they had GPS to help them figure out where they were. Here are 6 ingenious ways our ancestors navigated the oceans.

In this video Paul Andersen explains how plate tectonics explains the large-scale system interactions on our planet. Large plates float on the mantle and interact to form the major landforms on the planet. Evidence for plate tectonics...

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...

Over its lifetime, the Earth has seen plenty of climate change. About 50 million years ago the planet experienced extreme cooling, and all from a little fern.

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...

Stars blowing up is a surprisingly common occurrence, but who would have thought to search the bottom of the ocean if you were trying to study them?!

You probably don't consider algae to be super aggressive, but 66 million years ago had to turn to murder in order to survive.

Cliffs and canyons, beaches and dunes, floodplains and river valleys, plateaus and mountains — these are all products of a restless Earth. In today’s episode we’re going to take a closer look at how landforms greatly influence how people...

A SciShow kid wrote us and asked: What is camouflage and how does it work? Join Jessi as she explores how different kinds of animals play hide-and-seek in the wild!

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 protein...

If you’re trying to figure out where to plan on sheltering during the zombie apocalypse, it’s essential to know whether zombies sink or float!

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...

Deep in the ocean, fluffy bits of organic matter fall like snow. But this marine snow isn’t just pretty; it’s an essential part of our ocean food webs and our global climate!

Plastics are everywhere -- they're in our favorite electronic devices, they package our food and insulate our homes. Today, the total mass of plastic is twice the total mass of all living organisms on the planet, and it's starting to...

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...

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.

NASA's Cassini spacecraft has detected a huge ocean under the surface of Saturn's moon Enceladus. But how? And what does it really mean? Hank lays out the data -- straight from space to your brain!

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!