SciShow Kids
Explore Saturn's Rings
There's a lot more to Saturn's rings than just looking awesome! Find out why!
3Blue1Brown
A Curious Pattern Indeed
Moser's circle problem. What is this pattern: 1, 2, 4, 8, 16, 31,...
SciShow
Why Do I Have to Brush My Teeth?
There are a few reasons that modern humans have to brush our teeth to stay healthy, even though our primate cousins don’t. Grab your floss and find the answers inside!
SciShow
Why Does Cold Weather Kill Your Phone?
If you live in a cold climate, you might know the agony of trying to get your car started on a chilly winter morning, or standing helplessly by as your phone's battery level plummets. So why do cold weather and batteries seem to just not...
3Blue1Brown
Why is pi here? And why is it squared? A geometric answer to the Basel problem
A beautiful solution to the Basel Problem (1+1/4+1/9+1/16+...) using Euclidian geometry. Unlike many more common proofs, this one makes it very clear why pi is involved in the answer.
TED Talks
TED: Can art amend history? | Titus Kaphar
Artist Titus Kaphar makes paintings and sculptures that wrestle with the struggles of the past while speaking to the diversity and advances of the present. In an unforgettable live workshop, Kaphar takes a brush full of white paint to a...
TED-Ed
TED-Ed: Jeff Leek and Lucy McGowan: Can you spot the problem with these headlines? (Level 1)
In medicine, there's often a disconnect between news headlines and the scientific research they cover. While headlines are designed to catch attention, many studies produce meaningful results when they focus on a narrow, specific...
PBS
Are We Alone? Galactic Civilization Challenge
The Drake Equation tells us the likelihood that there are other advanced technological civilizations waiting for us among the stars. In this episode of Space Time we challenge you to use the Drake Equation to help us determine how near...
TED Talks
Rebecca MacKinnon: Let's take back the Internet!
In this powerful talk from TEDGlobal, Rebecca MacKinnon describes the expanding struggle for freedom and control in cyberspace, and asks: How do we design the next phase of the Internet with accountability and freedom at its core, rather...
TED Talks
Daniel Wolpert: The real reason for brains
Neuroscientist Daniel Wolpert starts from a surprising premise: the brain evolved, not to think or feel, but to control movement. In this entertaining, data-rich talk he gives us a glimpse into how the brain creates the grace and agility...
TED Talks
TED: When Black women walk, things change | T. Morgan Dixon and Vanessa Garrison
T. Morgan Dixon and Vanessa Garrison, founders of the health nonprofit GirlTrek, are on a mission to reduce the leading causes of preventable death among Black women -- and build communities in the process. How? By getting one million...
SciShow
This Worm's Gut Has No Way In or Out
There are plenty of creatures out there with only one opening to handle both taking in food and getting rid of waste. But there’s at least one animal out there that doesn’t have a gut opening… at all. How does that even work?!
TED Talks
Emily Nagoski: How couples can sustain a strong sexual connection for a lifetime
As a sex educator, Emily Nagoski is often asked: How do couples sustain a strong sexual connection over the long term? In this funny, insightful talk, she shares her answer -- drawing on (somewhat surprising) research to reveal why some...
PBS
Can We Hear Shapes?
Mathematician Mark Kac asked the question "Can we hear the shape of a drum?" It was a question that took over 20 years to answer. Sine waves, fundamental frequencies, eigenvalues, this episode has got it all!
Crash Course
Freedom of the Press: Crash Course Government and Politics
Today, Craig is going to finish up our discussion of the First Amendment with freedom of the press. Like an individual's right to free speech, the press has a right, and arguably responsibility, to tell the public what the government is...
TED-Ed
TED-Ed: What's the best country to live in? | TED-Ed
What's the best country to live in? Is it the one with the best food? The longest life expectancy? The best weather? For the past 70 years, most governments have relied heavily on a single number: the Gross Domestic Product, or GDP. But...
TED Talks
Rose M. Mutiso: How to bring affordable, sustainable electricity to Africa
Energy poverty, or the lack of access to electricity and other basic energy services, affects nearly two-thirds of Sub-Saharan Africa. As the region's population continues to increase, so will the need to build a new energy system to...
PBS
The Race to a Habitable Exoplanet - Time Warp Challenge
You've discovered a habitable exoplanet, but so has an an evil interplanetary mining corporation. Can you get to the planet before they strip it bare and leave it unsuitable for life? You're going to need a ship, the Lorentz...
TED Talks
TED: Can you really tell if a kid is lying? | Kang Lee
Are children poor liars? Do you think you can easily detect their lies? Developmental researcher Kang Lee studies what happens physiologically to children when they lie. They do it a lot, starting as young as two years old, and they're...
SciShow
There's a Single-Celled Dog
Is it possible for there to be a dog that is made of one very determined cell?
SciShow
Do You Need a Brain to Sleep?
You might think you need a brain to be able to sleep, but organisms with super simple neural networks can still "sleep" sort of like we do. So, if these organisms can sleep too, then what is sleep anyway?
SciShow
Was the Apollo Program a Bad Idea A SciShow Documentary
The Apollo program was famous for being risky and expensive. It had a crunched timeline, daring astronauts, and lacked modern tech, and that all kind of makes you wonder… was the Apollo program a bad idea?
Crash Course
Émile Durkheim on Suicide & Society: Crash Course Sociology
Now that we’ve talked a little bit about how sociology works, it’s time to start exploring some of the ideas of the discipline’s founders. First up: Émile Durkheim. We’ll explain the concept of social facts and how Durkheim framed...
TED Talks
TED: How to decarbonize the grid and electrify everything | John Doerr and Hal Harvey
The good news is it's now clearly cheaper to save the planet than to ruin it, says engineer and investor John Doerr. "The bad news is: we are fast running out of time." In this conversation with climate policy expert Hal Harvey, the two...