The world changes. It really does! But sometimes it changes so slowly that we don't notice it. Other times it changes REALLY FAST!!! In this episode of Crash Course Kids, Sabrina talks about some of the reasons things can change quickly...

Do you know how many people have been to the moon? Only 12! Part of the reason it's so few is because of how difficult it is to escape Earth and get into space in the first place. In this episode of Crash Course Kids, Sabrina talks about...

Jessi and Squeaks have talked about how wells move water from one place to another before; now they're going to show you how to build your very own so you can see for yourself!

Squeaks built a pretend time machine, and he and Mister Brown use their imaginations to travel back in time to learn all about the very first living thing!



Second Grade Next Generation Science
Standards
Disciplin
ary...

There are many types of dust with some surprising things floating around in them, from poop to bacteria. And these dusts can take an extreme toll on your health

Mr. Andersen explains the law of superposition and the principle of original horizontality. He uses an animation to explain how rock layers can accumulate over time.

Did you know that when you fall down, the earth falls up to meet you? Explore the counterintuitive equation that describes gravity.

About the importance of the National Parks Foundation.

How did life on Earth get started? Did life on Earth originate on another planet? Either Mars, or in a distant solar system? Could Earth life have spread to have seeded life elsewhere? Let's see what modern science has to say about the...

Humans have been using microbes to separate minerals from mud since the middle of the last century, so we know biomining works on earth. But how will these tiny miners work in microgravity?

Welcome to SciShow Tangents, the lightly competitive game show podcast brought to you by the team behind SciShow! For too long, you've only been able to hear SciShow Tangents. Well, no more! SciShow Tangents has officially come to...

By looking at the layers beneath our feet, geologists have been able to identify and describe crucial episodes in life's history. These key events frame the chapters in the story of life on earth and the system we use to bind all these...

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...

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

Wouldn’t it be cool to be able to point at a fossil and know that it’s the first, say, plant? Well... yeah! But it's not that easy! Scientists are always making new discoveries that throw all our old assumptions into...

What's happening inside our ears when we can hear that ringing? What's happening inside our brains? Sit back, clean the wax out of your ears, and let Michael Aranda explain!

When it comes to sparkly objects, the planet Earth has a lot to offer. Here are 5 especially awesome glasses made by nature!

cha
pters

OBSIDI
AN

0:57/> 2 OPALr/> 4
:09
3
TEKTITE
S
...

SciShow takes you down the deepest hole in the world -- Russia's Kola Superdeep Borehole -- explaining who dug it and why, and what we learned about Earth in the process. Don't fall!

Designer Jessi Arrington packed nothing for TEDActive but 7 pairs of undies, buying the rest of her clothes in thrift stores around LA. It's a meditation on conscious consumption -- wrapped in a rainbow of color and creativity.

Our Atmosphere is Escaping

Today we're going to talk about rivers and how these dynamic, delicate, yet powerful systems are able to constantly change the landscape. We'll focus on the Zambezi River in Southeast Africa following its main features from the...

Ever wonder what all those names on the periodic table actually mean? There's a whole lot of fascinating history on Mendeleev's table. Some carry names from antiquity, some are named for people, some are named for places, and some are...

There's one crater that may be older than any that we know of. Except there's a snag, it might not actually be a crater at all.

One of the strongest rocks in the world is one that you might not expect, and the story of how it formed deep under the earth is intense!