Social entrepreneur Julie Cordua works on a problem that isn't easy to talk about: the sexual abuse of children in images and videos on the internet. At Thorn, she's building technology to connect the dots between the tech industry, law...

We've talked about variables and solving problems. But how do we keep working on a problem if the first solution doesn't fix it? Trials! In this episode of Crash Course Kids, Sabrina shows us how to use Trials to figure out what the...

The universe is made up of information, similar to a computer, and physics (you know, the basis of the universe) certainly is based on computational principles. But is it running some grand program? Will the answer be 42? Make sure you...

Two of the vaccines we have for COVID-19 have the distinction of being the first mRNA vaccines to see widespread use in humans. But how do they work, and how are they different from the litany of immunizations you probably got as a kid?

If you’ve ever been around animals, you know they can have different personalities, but there’s one trait that scientists used to believe was uniquely human.

Ratites have spread to Africa, Australia, New Zealand, and South America. And there are fossils of Ratites in Europe, Asia, and North America too. That's a lot of ground to cover for birds that can't fly. So how did Ratites end up all...

Dan Bricklin changed the world forever when he codeveloped VisiCalc, the first electronic spreadsheet and grandfather of programs you probably use every day like Microsoft excel and Google Sheets. Join the software engineer and computing...

How do you turn a memory, especially one of a traumatic event, into hard evidence of a crime? Julia Shaw is working on this challenge, combining tools from memory science and artificial intelligence to change how we report workplace...

About 10% of the world population is left-handed. But why does handedness exist and what determines which hand is dominant? Scientists have suggested several theories, but the answer may well lie with evolution.

You might have seen this story circulating on social media…but we’re here to let you know that children are NOT growing horns because they use cellphones. This is a great opportunity to learn from what can happen when both peer review...

Imagine a police lineup where ten witnesses are asked to identify a bank robber they glimpsed fleeing the scene. If six of them pick the same person, there's a good chance that's the culprit. And if all ten do, you might think the case...

A geometry/probability question on the Putnam, a famously hard test, about a random tetrahedron in a sphere. This offers an opportunity not just for a lesson about the problem, but about problem-solving tactics in general.

MOMA design curator Paola Antonelli previews the groundbreaking show Design and the Elastic Mind -- full of products and designs that reflect the way we think now.

Hank goes from space to sex and then to motherhood, covering the SpaceX launch, a mission to the moons of Jupiter, intersexual workplace rivalries, the evolution of male homosexuality, the fossil evidence of squishy baby skulls, toddler...

Detecting diseases early can be a big help when it comes to treating them, and researchers may have gotten one step closer to diagnosing Alzheimer's with a simple blood test.

Taylor Wilson believes nuclear fusion is a solution to our future energy needs, and that kids can change the world. And he knows something about both of those: When he was 14, he built a working fusion reactor in his parents' garage. Now...

(NOTE: Statements in this talk have been challenged by scientists working in this field. Read "Criticisms & updates" below for more details.) Elaine Morgan was a tenacious proponent of a theory that is not widely accepted. The aquatic...

A geometry/probability question on the Putnam, a famously hard test, about a random tetrahedron in a sphere. This offers an opportunity not just for a lesson about the problem, but about problem-solving tactics in general.

The enigmatic equation e^{pi i} = -1 is usually explained using Taylor's formula during a calculus class. This video offers a different perspective, which involves thinking about numbers as actions, and about e^x as something which...

Where science fiction becomes science fact - that is the place Hank is exploring in today's episode of SciShow. Many inventions we use today were first imagined in stories that described fantastical futures. Hank talks...

The star-mapping satellite Gaia has found more than 20 stars speeding across the Milky Way toward intergalactic space. There are just a few things that can slingshot a star out of a galaxy and all of them take some extreme gravitational...

A puzzle involving colliding blocks where the number pi, vey unexpectedly, shows up.

Get the behind-the-scenes story from visual strategist Dan Goods about how a single question launched NASA's Jet Propulsion Lab into action at the beginning of the COVID-19 pandemic, propelling an unprecedented pivot from...

Telekinesis, the ability to manipulate matter with the mind alone, is a trait exhibited by some of the most iconic fictional characters, including Neo, Yoda, and, of course, Carrie. But is this mind control actually possible in real...