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...
TED-Ed
TED-ED: How do we study living brains? - John Borghi and Elizabeth Waters
As far as we know, there's only one thing in our solar system sophisticated enough to study itself: the human brain. But this self-investigation is challenging because a living brain is shielded by skull, swaddled in tissue, and made up...
Crash Course
High Mass Stars
Massive stars fuse heavier elements in their cores than lower mass stars. This leads to the creation of heavier elements up to iron. Iron robs critical energy from the core, causing it to collapse. The shock wave, together with a huge...
SciShow
The Hot Mess That Was the Mir Space Station
Mir taught us a lot, but most days, it was also a mess of mold and electrical problems... even when it wasn't literally on fire.
SciShow
Retracing a Mastodon’s Steps With Chemistry
Thanks to strontium, oxygen, and rings in a tusk, scientists now have evidence that extinct mastodons may have participated in yearly migrations.
SciShow
The Wild, Wiggly, Weird World of Worms | Compilation
There are tens of thousands of types of worms on our planet, and these wiggly wonders are oh-so fascinating that we had to put together different stories about them to reveal just how 'wormdeful' they are.
SciShow
The Sweetest Rocks in Space
Sugars aren’t just for munching and crunching, they also make up our genetic code! So what does it mean to find sugars INSIDE meteorites?
MinuteEarth
The Secrets of Extreme Breath Holding
Humans can hold our breath longer than we think by taking advantage of our body’s innate survival instincts - and then ignoring them. __________________________________________ To learn more, start your googling with these keywords:...
Crash Course
What is Weathering? Crash Course Geography
Weathering breaks down rocks and creates sediments which become the raw materials for other rocks and the formation of our soils. And we call the process of moving that sediment erosion. In today's episode, we're just going to focus on...
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 --...
SciShow
Why Do You Feel Butterflies in Your Stomach
It may have happened when you locked eyes with your secret crush, or before an important job interview, but what exactly caused that strange, fluttering sensation in your stomach?
SciShow
How Do Brine Shrimp Survive In Packaging For Years?
Nearly everyone has some experience with the illustriously branded brine shrimp, but there’s a whole lot more to the creatures’ resilience than what it says on the box.
SciShow
Big Idea: Gunpowder
Chinese alchemists searching for an elixir of eternal life discovered the world's first chemical explosive. Hank has the full story on gunpowder in this SciShow about a big idea of science.
SciShow
The Bizarre Future of Stroke Treatment
Even with rapid action, strokes can lead to lasting brain damage. So researchers are developing new techniques like freezing brains to buy time and using using parts of pork bladders to regrow brain tissue.
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.
SciShow
Can We Grow Plants On the Moon?
Despite how easy it looks in movies, growing plants on other planets is trickier than you might imagine.
Bozeman Science
Synthesis and Decomposition Reactions
Atoms or molecules combine to form a new compound in a synthesis reaction. Examples include the addition of oxygen to magnesium metal to create magnesium oxide and the addition of carbon dioxide to water to crete carbonic acid. A combine...
Crash Course
Life Begins: Crash Course Big History
In which Hank and John Green teach you about life on Earth. They won't be giving advice on how life should be lived, because this is a history series. Instead, they'll teach you about the earliest forms of life on Earth, and some of the...
SciShow
The Most Extreme Complex Life in the World
Humans can’t go too far above or below sea level unaided, but there are some complex forms of life that CAN survive at super high elevations or in the deepest parts of the ocean.
SciShow
Thank Goodness for Chlamydia(e)
The group of bacteria known as Chlamydiae doesn't do much to endear itself to us since these bacteria can cause a variety of illnesses. But it turns out that we may have Chlamydiae to thank for life as we know it!
SciShow
These Animals Don’t Need Oxygen?!
It seems obvious that animals need oxygen to live, but deep in the Mediterranean Sea there is a very small animal that might be doing just fine without any oxygen at all.
Be Smart
Title: The Recipe For Life
If the human body could be distilled down into one molecule, what would our chemical formula be? And WHY is it that way? There’s a whole lot of elements on the periodic table, but life depends on relatively few of them in order to...
Crash Course Kids
Vegetation Transformation
Have you ever seen a magic trick where one thing changes to another thing? Well, that's nothing compared to what plants can do through a process called photosynthesis. In this episode, Sabrina talks about how photosynthesis works! This...