SciShow
That Time Our Ancestors Almost Went Extinct
There's a lot of humans on our planet. But our global domination was hardly a given. New evidence suggests that our ancestors were on the brink of total extinction nearly a million years ago. So let's talk about that time when the Homo...
SciShow
How Snakes Hijacked Our Brains
Sometimes, one animal ends up in an evolutionary arms race with another for millions of years. Here are four fascinating examples, including our own showdown with snakes. Hosted by: Jaida Elcock (she/her)
SciShow
A Fish In This Lake Evolved Into 850 Different Species
When conditions are just right, one species can turn into hundreds in a short period of time. Welcome to the weird world of adaptive radiation. Hosted by: Jaida Elcock
SciShow
Where Scientists Keep the World's Most Endangered Animals
Even when a species has officially gone extinct, there's sometimes still hope of saving it. Scientists keep insurance populations of endangered animals all over the world with the goal of one day reintroducing them to the wild. Hosted...
SciShow
The Ancient Crops We've Forgotten How to Grow
Today, humans live on just a few staple crops, like maize, rice, and wheat. But in the early days of agriculture, humans were domesticating foods left and right. Come with us as we discover the lost crops of North America, like pitseed...
SciShow
The OTHER Amazing Thing Easter Islanders Did with Rocks
Did the Easter Islanders really cause their own civilization's collapse? Probably not. In fact, they used rock gardens to grow food sustainably on the island of Rapa Nui for centuries. Hosted by: Savannah Geary (they/them)
SciShow
These Islands Shouldn't Exist
You've probably heard that climate change is leading to rising sea levels, which is bad news for lots of islands. But for some islands like the Maldives, rising waters are making them... bigger? Correction: We mixed up east and west!...
SciShow
Fish Need a Better Weather Forecast
Climate disruption threatens food security around the world, but it's especially dangerous for fish farmers. Here's how high-tech climate information services can help then adapt. Hosted by: Hank Green (he/him)
SciShow
Space, Goats, and Climate Change
Support for this video provided by Gates Ventures. Hosted by: Reid Reimers (he/him)
SciShow
Yes, Flights ARE Bumpier Now (And They're Getting Worse)
It's not just your imagination. Turbulence on airplane flights is getting worse, including severe turbulence that could cause injuries. The reason is the climate crisis -- here's how. Hosted by: Tom Lum
SciShow
Are Energy-Efficient Windows Bad For Us?
Low-E windows have reduced the amount of energy required to heat and cool our buildings, a critical step in fighting climate change. But new research suggests we've lost something beneficial in the process. Hosted by: Hank Green (he/him)
SciShow
That Time A Tsunami Lasted 9 Days
In September of 2023, researchers detected a strange vibration all across the planet. They traced it back to a massive tsunami off the coast of Greenland, but the sound went on even after the wave was gone. As in, for nine full days....
SciShow
Permafrost Is Not What You Think It Is
If you've ever heard about things like mammoths being found in permafrost, you may have an image in your head of what that looks like. But you might be wrong! So let's talk about what permafrost really is, why it's so important, and why...
SciShow
Do Animals Mourn Their Dead?
We can't know if or how animals understand death, but behavioral changes in some species could mean they experience something similar to human grief.
SciShow
Dyslexia: When Your Brain Makes Reading Tricky
While many researchers are focusing on finding a difference in brains of people with dyslexia, some new research suggests it might not just be in their brains, but in their eyes.
SciShow
DNA Structure and Replication: Crash Course Biology
Hank introduces us to that wondrous molecule deoxyribonucleic acid - also known as DNA - and explains how it replicates itself in our cells.
SciShow
Exploring Uranus and Neptune
Join SciShow Space as we complete our tour of the Solar System planets with the ice giants, Uranus and Neptune.
SciShow
10 Discoveries Made in National Parks
You might think of national parks as a nice place to see a geyser, or a big ol’ canyon, but over the past 100 years, US national parks have produced some of the biggest, oldest, deepest, and creepiest discoveries that have been made in...
SciShow
The 16 Most Asked Questions About Magnets
Magnets - how DO they work? We've got the answer for you, plus a bunch of weird fun magnet facts - where they got their names, why hitting some stuff with a hammer can turn it into magnets, and even why we feed magnets to cows, on purpose.
SciShow
Can Rock and Roll Replace Your Insulin?
Could rock music one day replace your insulin injections? Scientists are pioneering music-controlled cells that could provide the perfect dose of insulin for type 1 or type 2 diabetes with just a bit of music. Specifically, Queen's "We...
SciShow
Why Does Everything Decay Into Lead
If you look at a copy of the periodic table, you might notice that basically every element after lead is labelled as radioactive. And the vast majority of those elements wind up decaying into some version of lead eventually. But why is...
SciShow
Help, I’ve Lost My Butt!
It feels like for an animal, having one's butt fall off would be pretty bad. But apparently that's not always the worst thing to happen, at least not for these specific animals.
SciShow
We're Probably Going to Cure MS
You've probably heard of multiple sclerosis, especially if you're a fan of The West Wing. But can we ever cure MS? Yes. But also, no. But also, probably? It's complicated.
SciShow
We Don’t Know What the Sun Is Made Of
Unlike Earth, our Sun is a giant ball of mostly hydrogen and helium. Astronomers managed to figure that one out roughly 100 years ago. But after all this time, they still can't come to an agreement on what "mostly" means, precisely.