SciShow
World's Most Asked Questions How Many Calories Should I Have in a Day
People ask Google everything under the sun. One of the most commonly searched questions in the world is “How Many Calories Should I have in a day?” Allow us at SciShow to explain.
TED-Ed
TED-Ed: Oxygen's surprisingly complex journey through your body - Enda Butler
Oxygen forms about 21% of the air around us. In your body, oxygen forms a vital role in the production of energy in most cells. But if gases can only efficiently diffuse across tiny distances, how does oxygen reach the cells deep inside...
Crash Course
The Handmaid's Tale, Part 2: Crash Course Literature 404
This week, John Green continues to teach you about Margaret Atwood's speculative fiction, The Handmaid's Tale. In this installment, we're looking at Atwood's desire to tell a story from a female point of view, and what exactly it means...
TED Talks
Niels Diffrient: Rethinking the way we sit down
Design legend Niels Diffrient talks about his life in industrial design (and the reason he became a designer instead of a jet pilot). He details his quest to completely rethink the office chair starting from one fundamental data set: the...
SciShow
Why Do Coffee Naps Recharge You So Well?
With their powers combined, coffee and naps create a greater sum than their parts.
TED-Ed
TED-Ed: Cell vs. virus: A battle for health - Shannon Stiles
All living things are made of cells. In the human body, these highly efficient units are protected by layer upon layer of defense against icky invaders like the cold virus. Shannon Stiles takes a journey into the cell, introducing the...
TED Talks
TED: Caring for engineered tissue | Nina Tandon
Tissue engineer and TED Fellow Nina Tandon is growing artificial hearts and bones. To do that, she needs new ways of caring for artificially grown cells -- techniques she's developed by the simple but powerful method of copying their...
SciShow
How to Stop Cancer Using RNA
We know that our immune system watches out for us, but is there a way we could give it a leg up in spotting cancerous tumors?
SciShow
Why Is Being Underwater So Peaceful?
After nailing that sweet triple gainer into the pool you may have noticed something: being underwater is very peaceful, thanks to a reflex we share with all air-breathing vertebrates.
SciShow
The Science (and Dangers) of Booze in Humans
Many of us choose to enjoy the effects of alcohol, and we know that drinking too much is a bad thing, but what kinds of things can actually happen when you drink too much for too long?
SciShow Kids
4 Facts to Know About Reindeer
It's getting really cold where Jessi and Squeaks live, and that has her thinking about a super cool animal that's always ready for super cold weather: Reindeer!
SciShow
Beyond Identical or Fraternal: 6 Rare Types of Twins
Twins can be a lot more complicated than just identical or fraternal, and the rarer types of twins suggest that we have a lot more to learn about human development.
TED-Ed
TED-Ed: What causes opioid addiction, and why is it so tough to combat?
In the 1980s and 90s, pharmaceutical companies began to market opioid painkillers aggressively, while actively downplaying their addictive potential. The number of prescriptions skyrocketed, and so did cases of addiction, beginning a...
TED-Ed
TED-Ed: How do cigarettes affect the body? - Krishna Sudhir
Cigarettes aren't good for us. That's hardly news -- we've known about the dangers of smoking for decades. But how exactly do cigarettes harm us, and can our bodies recover if we stop? Krishna Sudhir details what happens when we smoke --...
TED Talks
Joshua Prager: In search of the man who broke my neck
When Joshua Prager was 19, a devastating bus accident left him a hemiplegic. He returned to Israel twenty years later to find the driver who turned his world upside down. In this mesmerizing tale of their meeting, Prager probes deep...
SciShow
SciShow Season 2 Outtakes, 2013
A look back at some of our favorite moments from 2013 of Hank doing the messing up thing.
MinuteEarth
Do Other Diseases Have "Long" Versions?
COVID isn’t the only virus to cause long-lasting symptoms. Other viruses - including the flu - can have similar enduring effects on our tissues and immune systems.
SciShow
8 Useful Technologies Inspired by Nature
We're pretty good at inventing things, but stealing from nature is a great way to solve some problems!
Crash Course
Witchcraft: Crash Course European History
During our last several episodes, Europe and the European-controlled world have been in crisis. Wars, disease, climate changes, and shifts in religious and political power threw the European world into turmoil. People were looking for a...
TED Talks
Ueli Gegenschatz: Extreme wingsuit flying
Wingsuit jumping is the leading edge of extreme sports -- an exhilarating feat of almost unbelievable daring, where skydivers soar through canyons at over 100MPH. Ueli Gegenschatz talks about how (and why) he does it, and shows...
SciShow
Why Do We Yawn
Why do we yawn? If you think the answer is BOR-ing, then maybe your brain's just overheated. Let Hank explain the new thinking behind why we ... hold on ... *yawn*. Excuse me.
TED Talks
TED: Suddenly, my body | Eve Ensler
Poet, writer, activist Eve Ensler lived in her head. In this powerful talk from TEDWomen, she talks about her lifelong disconnection from her body -- and how two shocking events helped her to connect with the reality, the physicality of...