SciShow
Where Did Werewolf Myths Come From
Werewolves might not be real, but the myths about them could have come from real scientific phenomena, like a misunderstanding of certain illnesses.
TED-Ed
TED-ED: How does the immune system work? - Emma Bryce
Inside you, a daily battle is being waged and your immune system is at the frontline. Most of the time, you may not even notice it's there, but over the course of your life your immune system will guard you against hundreds of...
Crash Course
Urinary System, part 1: Crash Course A&P
Even though you probably don't choose to spend a lot of time thinking about it, your pee is kind of a big deal. Today we're talking about the anatomy of your urinary system, and how your kidneys filter metabolic waste and balance salt...
SciShow
6 of the Oldest Parasites Ever Found
Where there's life, there's other life looking for a free ride. Here are six of the world's oldest parasites.
SciShow
World's Most Asked Questions How Can I Get Rid of the Hiccups
People ask Google everything under the sun. One of the most commonly searched questions in the world is “How do I get rid of hiccups?” Allow us at SciShow to explain.
TED-Ed
TED-Ed: The Japanese folktale of the selfish scholar | Iseult Gillespie
In ancient Kyoto, a Shinto scholar found himself distracted from his prayers and sought to perform a purification ritual that would cleanse him. He decided to travel to the revered Hie Shrine; walking the path alone, ignoring any...
TED-Ed
TED-Ed: How do vaccines work? - Kelwalin Dhanasarnsombut
The first ever vaccine was created when Edward Jenner, an English physician and scientist, successfully injected small amounts of a cowpox virus into a young boy to protect him from the related (and deadly) smallpox virus. But how does...
SciShow
Stem Cells
Hank gives you the facts on stem cells - what they are, what they're good for, where they come from, and how they're used in medicine.
SciShow
How Do Turtles Live So Long?
We all know turtles live an amazingly long time, but what's their secret? And can we apply it to humans?
SciShow
What's Better for Wounds Scabs or Bandages
When someone gets a little scrape, it's pretty common for them to cover it with a bandage while it heals. There are some people, though, who think it's best to leave the wound uncovered and let your body do its healing thing. Who's...
TED-Ed
TED-Ed: Why sitting is bad for you - Murat Dalkilinc
Sitting down for brief periods can help us recover from stress or recuperate from exercise. But nowadays, our lifestyles make us sit much more than we move around. Are our bodies built for such a sedentary existence? Murat Dalkilin�c...
TED-Ed
TED-Ed: Why do women have periods?
A handful of species on Earth share a seemingly mysterious trait: a menstrual cycle. We're one of the select few mammals on Earth that menstruate, and we also do it more than any other animal, even though it's a waste of nutrients, and...
SciShow
From Your Head to Your… Anus: The Truth About Hair | Compilation
Whether you’ve got a lot of hair or absolutely none, it’s one of those things all of us have thought about at some point. And we’ve ended up with some… questions.
SciShow
Are Soft Cheeses Dangerous During Pregnancy?
You may have heard the oddly specific advice that pregnant people shouldn't eat soft cheeses, but there's a very good reason for that, and it applies to more than just dairy products.
SciShow
Why Don't Birds on Power Lines Get Zapped?
If you stick your finger in a socket, you’re in for a bad time, so how can birds perch on power lines without getting zapped?
SciShow
Why We Have Pain, & How We Kill It
Hank makes it all better by explaining the biochemistry of pain -- how it works, why we have it, and how painkillers, whether they're over the counter or heavy-duty prescription bad boys, make the pain go away. Chapters View all...
Be Smart
20 MILLION Year-Old Spider!! Unweaving Spider Silk
Living things have engineered some pretty awesome materials, but I'm not sure anything measures up to spider silk. It's as strong, as stretchy, and as resilient than even humans' most advanced creations like Kevlar and steel. So how do...
TED-Ed
TED-Ed: How the food you eat affects your brain - Mia Nacamulli
When it comes to what you bite, chew and swallow, your choices have a direct and long-lasting effect on the most powerful organ in your body: your brain. So which foods cause you to feel so tired after lunch? Or so restless at night? Mia...
TED-Ed
TED-ED: The science of attraction - Dawn Maslar
Romantic chemistry is all about warm, gooey feelings that gush from the deepest depths of the heart-right? Not quite. Actually, the real boss behind attraction is your brain, which runs through a very quick, very complex series of...
SciShow
Why can't you tickle yourself?
You might be susceptible to "tickle attacks," but have you ever wondered why you can't tickle yourself?
Crash Course
Smart Tattoos & Tiny Robots: Crash Course Engineering #37
This week we are exploring biodevices and the part they play in the healthcare world. We’ll look at the challenges of implantable biodevices, like biocompatibility, power and connectivity, packaging, structural design, delivery systems,...
TED-Ed
Meet the bluefin tuna, the toughest fish in the sea | Grantly Galland and Raiana McKinney
What's as big as a polar bear, swallows its prey whole, and swims at forty miles an hour? It's not a shark or a killer whale... it's the Atlantic bluefin tuna— the largest and longest-lived of the 15 tuna species. Its unique set of...
TED-Ed
TED-Ed: Why is it so hard to cure ALS? - Fernando Vieira
Amyotrophic Lateral Sclerosis (ALS), also called motor neuron disease and Lou Gehrig's Disease, affects about two out of every 100,000 people worldwide. When a person has ALS, their motor neurons - the cells responsible for all voluntary...
TED-Ed
TED-Ed: The surprising reason you feel awful when you're sick - Marco A. Sotomayor
It starts with a tickle in your throat that becomes a cough. Your muscles begin to ache, you grow irritable, and you lose your appetite. It's official: you've got the flu. It's logical to assume that this miserable medley of symptoms is...