TED-Ed
TED-ED: Could a breathalyzer detect cancer? - Julian Burschka
How is it that a breathalyzer can measure the alcohol content in someone’s blood, hours after they had their last drink, based on their breath alone? And could we use this same technology to detect disease by analyzing a person’s breath,...
TED-Ed
TED-Ed: Why don't poisonous animals poison themselves? - Rebecca D. Tarvin
Thousands of animal species use toxic chemicals to defend themselves from predators. Snakes have blood clotting compounds in their fangs, the bombardier beetle has corrosive liquid in its abdomen and jellyfish have venomous, harpoon-like...
TED-Ed
TED-Ed: Are naked mole rats the strangest mammals? - Thomas Park
What mammal has the social life of an insect, the cold-bloodedness of a reptile, and the metabolism of a plant? Bald and buck-toothed, naked mole rats may not be pretty, but they are extraordinary. Thomas Park explains how mole rats'...
SciShow
This Jawless Fish Could Help Treat Brain Diseases
You might expect to find these fish at the core of an ancient, distant asteroid, but we find them instead on Earth. That doesn’t mean they aren’t special, though. In fact, their immune systems may be the key to unlocking a new treatment...
SciShow
Could We Spot Alzheimer’s Early With RNA? | SciShow News
Detecting diseases early can be a big help when it comes to treating them, and researchers may have gotten one step closer to diagnosing Alzheimer's with a simple blood test.
SciShow
Kids and Sugar: The Sweet-and-Lowdown
If you've heard it once, you've heard it a thousand times: Parents blaming their kids' active behavior on sugar. But is it true? Hank gives you sweet-and-lowdown on the extent to which sugar can and can't affect behavior, in kids and...
SciShow
SciShow Quiz Show: Katelyn Salem vs. Hank Green
Welcome back to SciShow Quiz Show! Katelyn Salem of Kate Tectonics competes against Googleable internet sensation, Hank Green.
SciShow
Why Do I Have Varicose Veins?
Usually, the 160,000 kilometers of blood vessels in your body work incredibly smoothly. However, the forces of age, weight gain, and gravity can conspire to cause lumpy varicose veins.
SciShow
5 Things Humans Got Really Wrong About Our Bodies
Throughout history, people have been trying to figure out how our bodies work and how to fix them when things go wrong. This has led to some ideas that, with the benefit of hindsight, seem very strange
Curated Video
How Being Sick Changes Your Brain
When you're sick you just want to be left alone. Sometimes that's because you physically can't move, but other times, it might have more to do with the way your immune system is connected to your brain.
TED-Ed
TED-Ed: Poison vs. venom: What's the difference? - Rose Eveleth
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...
SciShow
Sensory Deprivation Tanks, and Other Overblown Human Closets
Sensory deprivation tanks, oxygen therapy chambers and unbelievably cold saunas - oh my! These machines are used to reduce stress, ease pain and could be useful in doing that, but these machines are generally meant to be used in very...
TED-Ed
TED-Ed: How do blood transfusions work? | Bill Schutt
In 1881, doctor William Halsted rushed to help his sister Minnie, who was hemorrhaging after childbirth. He quickly inserted a needle into his arm, withdrew his own blood, and transferred it to her. After a few uncertain minutes, she...
SciShow
Does Alcohol Really Keep You Warm?
As if you needed any more proof that alcohol just makes weird stuff happen, Quick Questions explains why alcohol can make you /feel/ warm, when it's actually making your body colder. You'll never think of brandy the same way again!
TED-Ed
TED-Ed: Ancient Rome’s most notorious doctor - Ramon Glazov
Learn about the Greek physician and philosopher Galen of Pergamon, whose experiments and discoveries changed medicine. -- In the 16th century, an anatomist named Andreas Vesalius made a shocking discovery: the most famous human anatomy...
TED Talks
Tony Wyss-Coray: How young blood might help reverse aging. Yes, really
Tony Wyss-Coray studies the impact of aging on the human body and brain. In this eye-opening talk, he shares new research from his Stanford lab and other teams which shows that a solution for some of the less great aspects of old age...
TED-Ed
TED-Ed: History's deadliest colors - J. V. Maranto
When radium was first discovered, its luminous green color inspired people to add it into beauty products and jewelry. It wasn't until much later that we realized that radium's harmful effects outweighed its visual benefits....
Crash Course
Metabolism & Nutrition, part 2: Crash Course A&P
If you're like us, you love the sound of a brunch buffet. But not everything you eat at that glorious buffet is going to be turned into energy. Your body has to work with different forms of food in different ways. In this episode of...
SciShow
What Happens if Your Body is Exposed to the Vacuum of Space?
Hank answers a SciShow viewer's most pressing question about what happens if the human body gets exposed to space. Would your head really explode?
SciShow
The Tiny Fish That's Changing Modern Medicine
The little fish Danio rerio holds secrets to understanding how vertebrates develop, how diseases like cancer work, and how we might one day learn how to regenerate human heart tissue.
SciShow
5 Weird Things We Believe About Death
There’s a lot we just don’t know about death, but even among the things we think we do know, there are a lot of misconceptions. Here are 5 weird things we believe about death! Chapters SWIM CRAMPS 1 0:39 GUNSHOT WOUND TO THE LEG 2:36...
SciShow
Hank vs Aranda: The FINAL FACE-OFF | SciShow Quiz Show
Two SciShow hosts go head-to-head in a battle to figure out who will be the reigning champion for this era of SciShow Quiz Show!
TED-Ed
TED-Ed: Claire Simeone: The lovable (and lethal) sea lion
Sunning themselves on rocks or waddling awkwardly across the beach, it's easy to think of sea lions more as sea house cats. But don't be fooled by their beachside behavior. Under the waves, sea lions are incredible endurance hunters,...
SciShow
SciShow QuizShow: Bad Blood and Weird Bugs
SciShow’s Executive producer Hank Green faces off against SciShow senior editor Alyssa Lerner in this Quiz Show about weird experiments and strange animal parts.