Jessi and Squeaks are learning more about the redwoods, and all the different animals that live in the different layers!



Second Grade Next Generation Science

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With their squishy bodies and color-changing abilities, octopuses and other cephalopods already look like our planet’s resident aliens. But researchers have discovered yet another thing that separates them from most other animals on Earth!

TED talks about who makes judges?

Geologists have a few ideas as to how rain affects mountains. But could rain also help mountains grow?

Drugs alone can't stop disease in sub-Saharan Africa: We need diagnostic tools to match. TED Senior Fellow Frederick Balagadde shows how we can multiply the power and availability of an unwieldy, expensive diagnostic lab -- by...

These days, we don't have to worry too much about meeting an early demise from ulcers, breaks in the stomach lining that could be fatal back in the early 1900s. This is because we have medicines to treat them, like proton pump...

June 28 is Tau Day! Join SciShow as we celebrate circles by exploring the many uses of twice pi.

From insects to infections, and polymers to pacemakers, scientists have discovered some very cool things entirely by accident, thanks to some careful observation and curiosity.

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What if your hour-long commute was reduced to just minutes? That's the promise of the hyperloop: a transit system designed around a pod that zooms through a vacuum-sealed space (roughly the size of a subway tunnel) at hyper-speed,...

Musician and activist Bono accepts the 2005 TED Prize with a riveting talk, arguing that aid to Africa isn't just another celebrity cause; it's a global emergency.

The world's most entertaining and useless self-help guide, from the brilliant mind behind the wildly popular webcomic xkcd and the #1 New York Times bestsellers What If? and Thing Explainer



For...

Legendary hip-hop producer Swizz Beatz is on a mission to revolutionize the way artists do business. In this glorious talk, he shares some of the ways he's helping fellow creatives thrive, including a roving art fair that gives artists...

Humans are no longer valued for our creativity, says media theorist Douglas Rushkoff -- in a world dominated by digital technology, we're now just valued for our data. In a passionate talk, Rushkoff urges us to stop using technology to...

Do 97% of climate scientists really agree that humans are the main cause of climate change? Yep! Here's what the 97 percent statistic *really* means.

Would you rather be bitten by a venomous rattlesnake or touch a poisonous dart frog? While both of these animals are capable of doing some serious damage to the human body, they deliver their dangerous toxins in different ways. Rose...

Octopus, squid and cuttlefish -- collectively known as cephalopods -- have strange, massive, distributed brains. What do they do with all that neural power? Dive into the ocean with marine biologist Roger Hanlon, who shares astonishing...

We all have memories that seem like they happened yesterday, but can you really trust them?

An atom smasher, or particle accelerator, collides atomic nuclei together at extremely high energies, using engineering that exploits incredibly cold temperatures, very low air pressure, and hyperbolically fast speeds. Don Lincoln...

We used to think that the human brain was a lot like a computer; using logic to figure out complicated problems. It turns out, it's a lot more complex and, well, weird than that. In this episode of Crash Course Psychology, Hank...

With his art, photographer Platon seeks to strip away assumptions and leave viewers with a window into his subject's character, filling our eyes with wonder and curiosity. Sharing extraordinary stories of what it's like to photograph...

Ever have a staring contest? Why is it so hard?! Jessi answers a question from a curious SciShow Kids viewer: Why do we blink?

So, you know you'd like to get help with some problematic behavior (like fear of flying). What do you do? Who can you go to for help? Once you've gone, what can you expect? In this episode of Crash Course Psychology, Hank...

Genetic Superheroes live among us! Hank explains that, along with a research study involving LSD and brain scans in this episode of SciShow News!

Life on Earth has always been shaped by other bodies in space, and life in our oceans is especially susceptible to interactions that have huge effects on life as we know it!