SciShow
The Science of the Cinnamon Challenge
Hank explains the science behind the "cinnamon challenge," and reveals why it is nearly impossible to complete.Do not attempt the cinnamon challenge! Instead, why not just watch some videos of the thousands of YouTubers failing at it!...
SciShow
What is Sarin Gas
Hank discusses the chemistry of sarin, the nerve agent that killed more than 1400 people in a chemical weapons attack in Syria.
SciShow Kids
Why Can It Be Hard to Breathe After a Fall? Biology for Kids
Have you ever fallen down and had trouble catching your breath? That's called "getting winded" and Jessi and Squeaks are here to explain what to do when it happens.
TED Talks
María Neira: This is your brain on air pollution
Air pollution knows no borders -- even in your own body, says public health expert María Neira. In this startling talk, she describes how the microscopic particles and chemicals you breathe affect all your major organs (including your...
SciShow
Is There a Way to Sober Up Faster?
You may be aware of certain hacks to sober up, but researchers have found a way to actually get booze out of our systems faster. And this discovery could help first responders when facing alcohol overdoses.
PBS
When Fish First Breathed Air
385 million years ago, a group of fish would undertake one of the most important journeys in the history of life and become the first vertebrates to live on dry ground. But first, they had to acquire the ability to breathe air.
SciShow
Could Humans Ever Breathe Water?
Wouldn’t it be wonderful if we could breathe underwater? But is it even possible?
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: 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: How breathing works - Nirvair Kaur
We breathe constantly, but have you ever thought about how breathing works? Discover the ins and outs of one of our most basic living functions-- from the science of respiration to how to control your breaths.
TED Talks
TED: How to raise a black son in America | Clint Smith
As kids, we all get advice from parents and teachers that seems strange, even confusing. This was crystallized one night for a young Clint Smith, who was playing with water guns in a dark parking lot with his white friends. In a...
TED Talks
TED: The tragedy of air pollution -- and an urgent demand for clean air | Rosamund Adoo-Kissi-Debrah
Breathing clean air is every child's human right, says grassroots campaigner Rosamund Adoo-Kissi-Debrah, sharing the heartbreaking story of her seven-year-old daughter, Ella Roberta, whose asthma was triggered to a fatal point by air...
SciShow
Why Don't Marine Animals Get "The Bends"?
"The bends" is one of the biggest risks that humans have to deal with when diving, but why don't marine animals, which are diving all the time, get them?
SciShow
Why Crocodiles Have an Extra Hole in their Heart
Crocodiles have four-chambered hearts, just like we do! But, while our hearts do just fine with four valves, they have a slightly different approach…
SciShow
How Doctors on Earth Stopped a Medical Emergency in Space
There was a medical incident on the ISS which required NASA to treat an astronaut from Earth. And astronomers have discovered what might be some of the universe’s earliest stars.
SciShow
5 Reasons to Dustbust, Even in Space
There are many types of dust with some surprising things floating around in them, from poop to bacteria. And these dusts can take an extreme toll on your health
SciShow
What's Causing That Stitch in Your Side?
What's the deal with that sharp pain in your side when you're trying to win that marathon? SciShow has the answers!
Be Smart
Carbon and Oxygen and You: Explained
A little bit of explanation for the cycle of carbon and oxygen
SciShow
Weird Places: Mexico's Giant Crystal Cave
SciShow explores a place that's as beautiful as it is dangerous: Mexico's Giant Crystal Cave, where chemistry has created the world's largest crystals -- but in an environment so hostile that you'd only survive a few minutes if you saw...
Crash Course
Lymphatic System: Crash Course A&P
Today Hank explains your unsung lymphatic system and how it supports cardiovascular function by collecting, filtering, and returning interstitial fluid back into the bloodstream via a system of lymphatic vessels. He also explains the...
SciShow
10 Dangerous Fashion Trends
As you know, in fashion, one day you're in and the next day your skin is falling off and your lungs are melting.
SciShow
Why Can We See Our Breath In The Cold?
Quick Questions explains how cold winter air triggers the same processes that form clouds, fog, and dew so you can see your breath!
SciShow
No Ears, No Problem: Frogs Can Hear With Their Lungs
If you’ve ever looked at a frog’s head, you might have noticed that they don’t have external ears. So How do they hear?
Bozeman Science
The Respiratory System
Paul Andersen starts this video with a description of the respiratory surface. He explains how worms, insects, fish and mammals take in oxygen and release carbon dioxide. He then tours the major organs of the respiratory system; from the...