SciShow
Today's Mass Extinction, and the First See-Through Animal
Are we in the middle of the 6th largest extinction event? What can we do? Let Hank explain and tell us about see-through animals!
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.
TED Talks
Siddharthan Chandran: Can the damaged brain repair itself?
After a traumatic brain injury, it sometimes happens that the brain can repair itself, building new brain cells to replace damaged ones. But the repair doesn't happen quickly enough to allow recovery from degenerative conditions like...
TED-Ed
TED-Ed: What's the big deal with gluten? - William D. Chey
If you've been to a restaurant in the last few years, you've likely seen the words gluten-free written somewhere on the menu. But what exactly is gluten, and why can't some people process it? And why does it only seem to be a problem...
TED Talks
Sean Davis: Can we solve global warming? Lessons from how we protected the ozone layer
The Montreal Protocol proved that the world could come together and take action on climate change. Thirty years after the world's most successful environmental treaty was signed, atmospheric scientist Sean Davis examines the world we...
TED-Ed
TED-ED: Is radiation dangerous? - Matt Anticole
When we hear the word radiation, it's tempting to picture huge explosions and frightening mutations. But that's not the full story - radiation also applies to rainbows and a doctor examining an X-ray. So what is it, really, and how much...
SciShow
How Music Can Heal the Brain
Sometimes you hear music and you automatically tap your foot, or do a little dance, or walk to the beat. What’s happening in your brain that makes your body move like that? Can music’s effects on movement or speech rewire your brain?
TED-Ed
TED-Ed: Why do you get a fever when you're sick? | Christian Moro
There are many mysteries around fever, but we do know that all mammals, some birds and even a few invertebrate and plant species feel fever's heat. It has persisted for over 600 million years of evolution. But it has a significant cost:...
SciShow
The New Gel That Regrows Brains
A new healing gel helped mice regrow brain tissue after a stroke, and scientists suspect someone out there is producing a bunch of ozone-destroying CFCs in defiance of an international agreement!
SciShow
What Happens in the Brain During a Coma?
Patients in comas might look like they’re sleeping, but there are pretty fascinating things happening inside of their heads.
SciShow
Why Do Bats Carry So Many Dangerous Diseases?
Bats are amazing and not just because they're the only mammal that can fly! But they also carry a lot of diseases that are dangerous to humans, and while that is definitely not their fault, there is actually a lot we can learn from their...
TED-Ed
TED-Ed: What happens when your DNA is damaged? - Monica Menesini
The DNA in just one of your cells gets damaged tens of thousands of times per day. Because DNA provides the blueprint for the proteins your cells need to function, this damage can cause serious issues-including cancer. Fortunately, your...
SciShow
Why Is Autumn More Vivid in New England?
During autumn in the northeastern US, deciduous trees sport a stunning display of yellows, oranges, and reds. But in some places, like Europe, autumn tends to look much more yellow. So why is it that only certain parts of the world get...
MinuteEarth
The Hurricane Category Scale Is Broken
The current hurricane category scale doesn’t accurately convey the danger of a storm, because it doesn’t account for a hurricane's most destructive factors.
SciShow
Why Ferns Have More Chromosomes Than You
Chromosomes are fascinating little things, and today, Hank explains why more of them doesn't mean more complex, and why different organisms have different numbers of chromosomes. The short answer: mistakes happen.
SciShow
When People Get Different Accents
What if one day you woke up and were suddenly speaking with a completely new accent from somewhere you’ve never lived? It sounds like a movie plot, but this rare condition is known as foreign accent syndrome.
TED-Ed
TED-Ed: How does heart transplant surgery work? | Roni Shanoada
Your heart beats more than 100,000 times a day. In just a minute, it pumps over five liters of blood throughout your body. But unlike skin and bones, the heart has a limited ability to repair itself. So if this organ is severely damaged,...
SciShow
Why Do Glue Labels Warn Not to Sniff It?
Abusing inhalants, like glue, can cause serious health problems, and you shouldn't need a video on the internet to tell you that. But let's take a deeper look at why these chemicals are so dangerous.
SciShow
Why Do Razor Blades Dull so Quickly?
If you shave regularly, you may have noticed your razor blades don’t cut as well after just a few uses. But why do razors get dull so quickly?
TED Talks
TED: This decade calls for Earthshots to repair our planet | Prince William
We start this new decade knowing that it is the most consequential period in history, says Prince William, The Duke of Cambridge. Inspired by President John F. Kennedy's "Moonshot," he calls on us all to rise to our greatest challenge...
TED-Ed
TED-Ed: What makes muscles grow? - Jeffrey Siegel
We have over 600 muscles in our bodies that help bind us together, hold us up, and help us move. Your muscles also need your constant attention, because the way you treat them on a daily basis determines whether they will wither or grow....
SciShow
Great Minds: Dr. Judith Resnik and the Icebusters
In 1984, ice was accumulating on the side of the Space Shuttle Discovery, spelling possible disaster, luckily it was the first mission of Dr. Judith Resnik, and the Canadarm.
SciShow
6 Ways Species Rely on Humans for Survival
Sometimes, a species has declined so dramatically that they require serious human intervention to ensure they don’t disappear forever. Here are six ways we’re using conservation and science to keep those species alive....
Chapters
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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?