PBS
The Impossibility of Perpetual Motion Machines
Bad ideas come and go in physics. But there’s one bit of nonsense that is perhaps more persistent than all others: the perpetual motion machine. No working perpetual motion machine has ever been experiment verified. All break the laws of...
SciShow
Your Fridge Isn’t Green, but It Could Be
Refrigeration and air conditioning are among the largest sources of carbon, and the refrigerants we use are greenhouse gases, too. But green refrigerants are on the way, from elastocaloric cooling to a method a bit like salting an icy road.
SciShow
Why Do People Like the Smell of Gasoline?
Why do we love the smell of something like gasoline that provides no clear evolutionary adaptation for us? Here are the psychological and chemical reasons that some researchers have suggested.
SciShow
The Key to an Artificial Heart ... and Open-Heart Surgery
Scientists have been trying to pull blood out of the body and put it back in again since the early 1800s, but bypass machines haven't been easy to get right.
SciShow
Do You Have a Maximum Heart Rate?
Does your heart rate have an upper limit and could you ever reach it?
SciShow
The Real Story of John Snow
While you might hear the name John Snow and think of dragons and unfruitful endings. There was a real life physician whose efforts saved lives and built the foundation for modern epidemiology.
SciShow
Is Premium Gasoline Really Better for Your Car?
Are you slowly killing your car by using below average gas? Olivia talks about octane ratings and how your vehicle is designed to handle them. Hosted by: Olivia Gordon
TED Talks
TED: The future of machines that move like animals | Robert Katzschmann
Imagine a boat that propels by moving its "tail" from side to side, just like a fish. That's the kind of machine that TED Fellow Robert Katzschmann's lab builds: soft-bodied robots that imitate natural movements with artificial, silent...
TED Talks
TED: Goats, blockchain and the future of money | Fariel Salahuddin
What if smallholder farmers could use their produce and livestock to pay for goods and services? TED Fellow and alternative currency enthusiast Fariel Salahuddin is working to make this a reality in places including rural Pakistan, where...
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.
SciShow
The Key to an Artificial Heart ... and Open-Heart Surgery
Scientists have been trying to pull blood out of the body and put it back in again since the early 1800s, but bypass machines haven't been easy to get right.
SciShow
Earth’s Underwater Topography & The Recent Space Walk
We just mapped out 80% of our earth and gave the ISS a tuneup! Hank Green explains what is going on in this episode of SciShow Space News!
TED Talks
Robert Neuwirth: The hidden world of shadow cities
Robert Neuwirth, author of "Shadow Cities," finds the world's squatter sites -- where a billion people now make their homes -- to be thriving centers of ingenuity and innovation. He takes us on a tour.
Amoeba Sisters
Sodium Potassium Pump
Explore the sodium potassium pump (Na+/K+ pump), with the Amoeba Sisters! This video talks about why this pump is needed and provides an overview of this type of active transport. Table of Contents: 00:00 Intro 0:48 Introducing the...
TED-Ed
TED-Ed: Your body vs. implants - Kaitlyn Sadtler
Why do medical implants like insulin pumps and prosthetic knees need replacement? Explore how the immune system fights implants and how new devices are trying to help. -- Insulin pumps improve the lives of millions of people with...
SciShow
Can Hanging Upside Down Kill You?
When you were a kid, did anyone ever tell you that your head would explode if you hung upside down for too long? Well... they might have been on to something.
Amoeba Sisters
Circulatory System and Pathway of Blood Through the Heart
Join the Amoeba Sisters in their introduction to the circulatory system and follow the pathway of blood as it travels through the heart! This video explains the importance of blood, arteries, and veins, and it also introduces basic heart...
TED Talks
Steven Johnson: How the "ghost map" helped end a killer disease
Author Steven Johnson takes us on a 10-minute tour of The Ghost Map, his book about a cholera outbreak in 1854 London and the impact it had on science, cities and modern society.
SciShow
The Real Story of John Snow
While you might hear the name John Snow and think of dragons and unfruitful endings. There was a real life physician whose efforts saved lives and built the foundation for modern epidemiology.
TED-Ed
TED-Ed: The cockroach beatbox - Greg Gage
By dissecting a cockroach ... yes, live on stage ... TED Fellow and neuroscientist Greg Gage shows how brains receive and deliver electric impulses -- and how legs can respond. (Launching a series on Awesome Nature) "The Cockroach...
SciShow
Blood Scrubbing Nano Magnets
SciShow explains a new breakthrough in our battle against pathogens: nano magnets that clean the blood! Chapters View all MAGNETS! 0:01 MAGNETIC NANOBEADS 1:15 IT WORKS! 1:58
SciShow
Cavitation
Hank tells you about cavitation - the power of tiny bubbles to weaken metal, kill fish & maybe even cure cancer.
TED Talks
Arvind Gupta: Turning trash into toys for learning
At the INK Conference, Arvind Gupta shares simple yet stunning plans for turning trash into seriously entertaining, well-designed toys that kids can build themselves -- while learning basic principles of science and design.
SciShow Kids
Make Your Own Well! Science Project for Kids
Jessi and Squeaks have talked about how wells move water from one place to another before; now they're going to show you how to build your very own so you can see for yourself!