Why is my weather app sometimes wrong? Well it has a lot to do with wind. Jet Streams, air cells, the shape and movement of the Earth... there are a lot of things that make weather a little unpredictable. In this episode of Crash Course...

Just how small are atoms? And what's inside them? The answers turn out to be astounding, even for those who think they know. This fast-paced animation uses spectacular metaphors (imagine a blueberry the size of a football stadium!) to...

In 2026, an unmanned NASA spacecraft is scheduled to arrive at 16 Psyche, a massive, metallic asteroid floating somewhere between the orbits of Mars and Jupiter. Why is NASA so interested in this heavy metal asteroid? Are we going to...

The divisiveness plaguing American politics today is nothing new, says constitutional law scholar Noah Feldman. In fact, it dates back to the early days of the republic, when a dispute between Alexander Hamilton and James Madison led the...

Every star, black hole, human being, smartphone and atom are all constantly pulling on each other due to one force: gravity. So why don’t we feel pulled in billions of different directions? And is there anywhere in the universe where...

Black holes are everywhere, including at the center of our galaxy. But because they’re invisible they’re quite difficult to study. Looking at the disks of material surrounding them, however, can give us tons of clues about how they...

We’ve created simulations to recreate the difference in time it takes for the Sun’s equator and poles to complete rotations, and the way we’ve solved is a bit surprising. And it looks like the Milky Way may not be great at mixing metals,...

Dive into the life of one of Ancient Rome’s most powerful figures, Hypatia of Alexandria, a renowned scholar and political advisor to the city's leaders. -- In the city of Alexandria in 415 CE, the bishop and the governor were in a...

Fermi bubbles are made up of gamma rays, but where they came from is still up for debate. Did they come from a star-forming region, or the black hole at the middle of our galaxy?

Check out the "What is a Day?" interactive video at
href='https://labs.minutelabs.io/what-is-a-day/' target='_blank' rel='nofollow'>at


It's super cool!! (and made by Jasper Palfree & the MinuteEarth/MinutePhysics...

Prompted by the Encyclopaedia Britannica ending its print publication, performance poet Rives resurrects a game from his childhood. Speaking at the TEDxSummit in Doha, Rives takes us on a charming tour through random (and less random)...

An oblate spheroid is a special case of an ellipsoid where two of the semi-principal axes are the same size.

In this video Paul Andersen explains how the linear momentum is equal to the product of the mass of an object and the velocity of the center of mass. He uses video analysis software to calculate the velocity of an object and therefore...

A little over a year ago, we covered a mind-blowing discovery on SciShow Space News. Some researchers even suggested that, if this was confirmed, it would be one of the biggest astronomy findings in years. Except, as it turns out… that...

How Do Bikes Stay Up?

With a greater understanding of biological mechanisms, humans may be able to take a devastating birth defect and turn it into a treatment for cancer.

Hank takes us on a journey to center of the Earth to explain both how the solid core formed and why it is so important for life as we know it.

Your eyes don’t always capture the world exactly as a video camera would. But the eyes are remarkably efficient organs, the result of hundreds of millions of years of coevolution with our brains. Michael Mauser outlines the similarities...

How Long To Fall Through the Earth?

Before he turned physics upside down, a young Albert Einstein supposedly showed off his genius by devising a complex riddle involving a stolen exotic fish and a long list of suspects. Can you resist tackling a brain teaser written by one...

Rubber ducks aren’t just good for some bath time fun, they’ve also helped scientists learn about the world!

Why are most manhole covers round? Sure it makes them easy to roll, and slide into place in any alignment. But there's another, more compelling reason, involving a peculiar geometric property of circles and other shapes. Marc Chamberland...

The search began with a physicist checking for sources of static on phone calls in the 1930s, but it took several decades to finally make one of the biggest discoveries in astronomy, Sagittarius A*.

Scientists just discovered the largest explosion ever detected, and it's thanks to the collaborative efforts of scientists from all over the world.