Like Egypt, Sumer, and Mesoamerica, ancient China represents a hydraulic civilization—one that maintained its population by diverting rivers to aid in irrigation—and one that developed writing thousands of years ago. Today, we’re going...

With streams and rivers drying up because of over-usage, Rob Harmon talks about a clever market mechanism to bring back the water. Farmers and beer companies find their fates intertwined in the century-old tale of Prickly Pear Creek.

Sometimes our eyes do weird things. One of the things that it sometimes does is get floaters. What are they? Where do they come from? Join us today on SciShow as Hank explores the science behind these little specks.

Underwater filmmaker Mike deGruy has spent decades looking intimately at the ocean. A consummate storyteller, he takes the stage at Mission Blue to share his awe and excitement -- and his fears -- about the blue heart of our planet.

Learn some curious facts about the majestic manatee.

In this collection of classic MinuteEarth videos, we tackle the science of size.

These giant balls of mucus may seem like a bizarre sight in the open ocean, but all this snot serves a purpose, both for the tiny creatures that produce it and for the entire ocean ecosystem!

You may have heard of the first interstellar object observed in our solar system, but did you know there's more than one? And speaking of icy rocks, new research suggests the ocean under the icy crust of Enceladus could be more dynamic...

Trees need water to grow, so how do Redwood trees get so big, despite the fact that it gets so dry?



First Grade Next Generation Science

Standards

Cr

osscutting Concept:...

When a squirrel chewed through a cable and knocked him offline, journalist Andrew Blum started wondering what the Internet was really made of. So he set out to go see it -- the underwater cables, secret switches and other physical bits...

James Surowiecki pinpoints the moment when social media became an equal player in the world of news-gathering: the 2005 tsunami, when YouTube video, blogs, IMs and txts carried the news -- and preserved moving personal stories from the...

After a crisis, how can we tell if water is safe to drink? Current tests are slow and complex, and the delay can be deadly, as in the cholera outbreak after Haiti's earthquake in 2010. TED Fellow Sonaar Luthra previews his design for a...

Our poop and pee have superpowers, but for the most part we don't harness them. Molly Winter faces down our squeamishness and asks us to see what goes down the toilet as a resource, one that can help fight climate change, spur innovation...

Now you "sea" them, now you don't! Cuttlefish are more than the chameleons of the sea, these cephalopods take camouflage to a whole new level.

In this episode of SciShow Space News, Hank details the work of the European Space Agency’s Rosetta spacecraft. He also explains the new discoveries of Jupiter's moon Io.

SciShow Space takes you to a distant, ancient black hole that … really shouldn’t be, and psyches you up for the Dawn spacecraft’s final approach to Ceres!

For centuries, people have viewed swamps and wetlands as obstacles to avoid. But for photographer Mac Stone, who documents the stories of wildlife in Florida's Everglades, the swamp isn't a hindrance — it's a national treasure. Through...

Hank brings us the strange story of in vitro meat - muscle tissue grown in laboratories with the hope that someday we will eat it.

In this video Paul Andersen explains the topic of biogeology. Life only exists where the geosphere, hydrosphere and atmosphere allow life to exist. The interactions between the organisms on the planet and the planet itself is known as...

You'd think that air that was the same temperature as your body would feel neutral, but if you've ever been outside when it's 37 degrees Celsius out... you know that's not the case!

Have you ever wanted to make a painting but you've run out of paint? Learn how you can make your own watercolors with Jessi and Squeaks!

The One That Got Away (Size Matters)

Hank gives us a summary of the important facts about fracking: what it is, why we do it, and how it actually isn't all butterflies and cupcakes.

Today we continue our exploration of the Water Cycle by drinking some dinosaur pee. Yep! Well, it's a little less gross that it sounds. It turns out that all of the water on Earth is just constantly recycled in what we call a closed...