TED-Ed
TED-Ed: How is power divided in the United States government? - Belinda Stutzman
Articles I-III of the United States Constitution allow for three separate branches of government (legislative, executive, and judicial), along with a system of checks and balances should any branch get too powerful. Belinda Stutzman...
TED Talks
TED: What can save the rainforest? Your used cell phone | Topher White
The sounds of the rainforest include: the chirps of birds, the buzz of cicadas, the banter of gibbons. But in the background is the almost-always present sound of a chainsaw, from illegal loggers. Engineer Topher White shares a simple,...
TED Talks
TED: The most powerful yet overlooked resource in schools | Heejae Lim
When teachers and families work together, everyone wins, says education technology entrepreneur and TED Fellow Heejae Lim. She shines a light on an underutilized resource in US public education -- a family's love for their children --...
3Blue1Brown
But why is a sphere's surface area four times its shadow?
Two proofs for the surface area of a sphere
SciShow
There Are Millions of Blood Types
You’re probably aware that your blood can be A, B, AB or O, but it turns out that blood types can get a lot more complicated than that!
TED-Ed
TED-Ed: A brief history of numerical systems - Alessandra King
1, 2, 3, 4, 5, 6, 7, 8, 9 and 0. With just these ten symbols, we can write any rational number imaginable. But why these particular symbols? Why ten of them? And why do we arrange them the way we do? Alessandra King gives a brief history...
SciShow
Why Psychology Tells Us What We Already Know
Hindsight bias skews our interpretation of events and information, making it seem like they were predictable or just not that surprising. This bias can cause some real problems, but the good news is, once you are aware of it, there are...
SciShow
This Tank of Water Could Change Physics Forever
No one has ever conclusively seen a proton turn into other, lighter particles, but fifty million liters of water in Japan might change that and our ideas about subatomic particles forever.
PBS
Extinction by Gamma-Ray Burst
Find out about the last time and the next time the Earth will be hit by a Gamma-ray Burst.
SciShow
What Do Mirror Neurons Really Do?
Mirror neurons are a very cool part of our brains but some people are taking it way further by making claims that they are responsible for telepathy and ESP. It goes without saying that this isn’t true, but what exactly do mirror neurons...
SciShow
These Horrifying Sea Slugs Smell Like Watermelon Candies
These fun looking sea slugs have a few unique features, not the least of which is the fact that they defend themselves by smelling like watermelon candies.
TED Talks
David Grady: How to save the world (or at least yourself) from bad meetings
An epidemic of bad, inefficient, overcrowded meetings is plaguing the world’s businesses — and making workers miserable. David Grady has some ideas on how to stop it.
SciShow
Why Do Heart Cells Turn into Bone?
It's no surprise that heart tissue and bone tissue have really different jobs. So why does it happen?
SciShow
The Freezing Dunes of Northern Canada
When you think "sand dunes" you probably wouldn't think to look up in the northern reaches of Canada, but there lies one of earth's most unique habitats.
TED-Ed
TED-ED: History through the eyes of the potato - Leo Bear-McGuinness
Baked or fried, boiled or roasted, as chips or fries; at some point in your life you've probably eaten a potato. But potatoes have played a much more significant role in our history than just that of the dietary staple we have come to...
TED Talks
TED: The future of the food ecosystem -- and the power of your plate | Ndidi Okonkwo Nwuneli
Many people across the world don't have access to healthy food -- while in other places tons of food go to waste. Social entrepreneur Ndidi Okonkwo Nwuneli thinks we can take bold steps to fix this problem. She lays out what it would...
MinuteEarth
Can Pregnancy Tests Help Beat COVID-19?
The lab-on-a-stick that lets us know if we’re pregnant is a genius bit of technology that can be used to quickly determine everything from whether there are nuts in our chocolate to whether we have COVID.
SciShow
3 Historic Firsts in Asteroid Exploration
We’ve visited lots of places in our solar system in the last 60 years, but modern technology has made an unlikely candidate the hottest new frontier of solar system exploration: asteroids. Today, we’ll take a look at a few exciting...
SciShow
A ‘New Neptune’ With Water, and Cyanide in Space
SciShow Space News shares the latest developments from around the universe, including the discovery of water vapor on a new “exo-Neptune,” and cyanide found in the clouds where stars are born.
Crash Course
Blood Vessels, part 2: Crash Course A&P
And now we return to blood vessels. In this episode, we start discussing what blood pressure is, how it can become "high", and what that means for our health. One of the more interesting points is that your body has ways of dealing with...
Amoeba Sisters
General Lab Safety
This Amoeba Sisters video introduces science lab safety guidelines with memorable illustrations and an accompanying handout listed under "safety". This video includes the discussion of proper lab attire, importance of proper disposal of...
SciShow
The Deal with Fat
Dietary science is complicated-- one day something is good for you and the next it's not. Learn what we DO know about fat chemistry in this episode of SciShow.
PBS
Are Space and Time An Illusion?
This episode of Space Time is actually about Spacetime, so pull up a chair, grab your favorite snack, and buckle up, because this episode is going to be a TRIP. Gabe explores what reality is, what "time" is, and why what you think those...
TED Talks
Anthony Veneziale: "Stumbling towards intimacy": An improvised TED Talk
In a hilarious, completely improvised talk, improv master Anthony Veneziale takes to the TED stage for a truly one-of-a-kind performance. Armed with an audience-suggested topic ("stumbling towards intimacy") and a deck of slides he's...