SciShow
Why Can't You Donate Platelets After Taking Aspirin?
Curious why you can't donate platelets after taking aspirin? Wonder no more!
SciShow
Weird Things Whales Lost on Their Journey to the Sea
When the ancestor of cetaceans went back into the water some 50 million years ago, it left a few things behind—including the functioning of certain genes that seem like they’d be hard to live without.
TED Talks
Eva Vertes: Meet the future of cancer research
Eva Vertes -- only 19 when she gave this talk -- discusses her journey toward studying medicine and her drive to understand the roots of cancer and Alzheimer’s.
SciShow
How Birds Really See the World
Ever wonder what it looks like from a birds-eye-view? Hank explains they see more than you think!
SciShow
Why People are Always Fighting Over the Thermostat
Negotiating thermostat settings can be really frustrating, but your officemate isn't trying to freeze you out on purpose. Stefan explains the science behind why people experience temperatures differently. Fun fact: Stefan wears a jacket...
SciShow Kids
Why Is My Leg Asleep?
Have you ever been sitting down for a long time and had your legs fall asleep? It feels really weird and can make it hard to walk for a little while! So what makes your legs fall asleep, and why does it feel all prickly when they start...
SciShow
What Happens When You Faint?
Why do we faint? Because sometimes, your nervous system just doesn't know what to do with itself.
SciShow
Why Does My Face Turn Red When I'm Angry?
Have you ever wondered why your face turns red when you’re angry? Check out this SciShow Quick Question to learn why!
SciShow
Why Do We Get Nosebleeds?
One moment, you're fine. The next, moment it seems like your nose is recreating a scene from The Shining. Why do we get nosebleeds?
TED-Ed
TED-Ed: How stress affects your body - Sharon Horesh Bergquist
Our hard-wired stress response is designed to give us the quick burst of heightened alertness and energy needed to perform our best. But stress isn't all good. When activated too long or too often, stress can damage virtually every part...
SciShow
All About Vaccines | SciShow Compilation
We've been spending a lot fo time thinking about one vaccine: the COVID vaccine. But vaccines have been around since long before SARS-CoV-2 showed up, so let's learn about some of those other vaccines.
TED Talks
TED: What a driverless world could look like | Wanis Kabbaj
What if traffic flowed through our streets as smoothly and efficiently as blood flows through our veins? Transportation geek Wanis Kabbaj thinks we can find inspiration in the genius of our biology to design the transit systems of the...
SciShow
What If Your Arm Falls Off Right After a Vaccine?
If you lost your arm almost immediately after being vaccinated, would you still be vaccinated?
SciShow
What Causes Brain Freeze?
That terrible pain the befalls us when enjoying an icy treat! How does that happen? Is there a cure? Let Hank explain.
Amoeba Sisters
Integumentary System
Join the Amoeba Sisters on this introduction to the Integumentary System! This video first introduces the important functions of this system. Then, this video takes a general tour through the epidermis (and each stratum of the...
SciShow
Why Do We Blush?
Aw, don't be embarrassed everyone does it! Quick Questions explains what causes blushing, which Darwin called "the most peculiar and most human of all expressions."
SciShow
MouthPeeing and 5 Other Extreme Turtle Traits
From peeing out of their mouths to being capable of living in icy water, turtles have evolved remarkable, but a little bit bizarre traits to survive.
TED Talks
TED: Can we eat to starve cancer? | William Li
(NOTE: This talk was given in 2010, and this field of science has developed quickly since then. Enjoy it as a piece of science history but not as the last word on this topic. Read "Criticisms & updates" below for more details.) William...
TED Talks
Richard Weller: Could the sun be good for your heart?
Our bodies get Vitamin D from the sun, but as dermatologist Richard Weller suggests, sunlight may confer another surprising benefit too. New research by his team shows that nitric oxide, a chemical transmitter stored in huge reserves in...
SciShow
The Bizarre Future of Stroke Treatment
Even with rapid action, strokes can lead to lasting brain damage. So researchers are developing new techniques like freezing brains to buy time and using using parts of pork bladders to regrow brain tissue.
SciShow
Why Are Some U.S. Cities Declaring Racism a Public Health Crisis?
In addition to being a serious social issue, racism is also a serious challenge to public health. In fact, over the last year and a half, dozens of cities have declared racism a public health crisis - and today, we here at SciShow will...
SciShow
4 Body Parts Discovered in the Last 10 Years
Did you know we are still discovering completely new pieces of our anatomies? Even in the last decade, we've found multiple new body parts, including some you can see with the naked eye!
SciShow
Reinventing the Wheel: 5 Species That Roll
If wheels and rolling have proven so efficient for humans, why hasn’t evolution pushed at least some other species in that direction? Well actually, there are a few species that can get around by rolling. Chapters View all GOLDEN WHEEL...
TED-Ed
TED-Ed: Why do you get a fever when you're sick? | Christian Moro
There are many mysteries around fever, but we do know that all mammals, some birds and even a few invertebrate and plant species feel fever's heat. It has persisted for over 600 million years of evolution. But it has a significant cost:...