Animals have all kinds tricks to help them get through the winter, but there are things people can do to help them out! Join Jessi and Dino to learn about how you can help the birds in your neighborhood have a safer, warmer winter.

A lot of what we know about ancient human civilizations comes from the things they leave behind. But sometimes, humans don’t live in places long enough to leave these clues. So, some researchers have turned to techniques outside...

The pandemic brought into sharp focus the crisis in caregiving in the United States, which woefully under provides support for parents. Activist and Girls Who Code founder Reshma Saujani has a proposal to address that -- something she...

In this video Paul Andersen shows conceptual thinking in a mini-lesson on matter and matter transport.


TERMS
Matter - physical
substances
System - a set of components (e.g. things) w
orking together
Transport - to...

Paul Andersen reviews the major concepts within the second unit of the new AP Biology framework. He starts by describing how life is organized into three domains. He explains how the history of life on the planet is...

Poop: it's gross... it's funny... it's educational?! Join Jessi and learn all about how you can observe poop in your neighborhood to figure out what kinds of animals live near you! Just don't touch it!

With many women of color considering exiting the workforce due to unfair conditions, it's time to reshape systems in order to put an end to this massive loss of talent. Exposing the harmful repercussions of racist, toxic organizational...

We are embarrassingly unaware of how divided our societies are, and Brexit grew out of a deep, unexamined divide between those that fear globalization and those that embrace it, says social scientist Alexander Betts. How do we now...

Most plants use colorful flowers to attract their favorite pollinators. But Marcgravia evenia is trying to attract bats, so it needs to do things a little differently, leading to some unique-shaped leaves.

We tend to think of fossils as dinosaur bones or petrified wood, but what if we told you that there's a lot we can learn from fossilized waste?

Elementary particles are the smallest known building blocks in the universe-and the neutrino is one of the smallest of the small. These tiny neutrinos can tell us about the furthest reaches and most extreme environments of the universe...

We all know space travel is pretty dangerous, but here are a few more things that you probably wouldn't have thought to look out for!

In some parts of the world, girls are as likely to be married off or trafficked as they are to be educated. Photojournalist and TED Fellow Smita Sharma thoughtfully depicts overlooked girls and young women, while making sure not to...

We're in the dawn of a new space revolution, says engineer Peter Beck: the revolution of the small. In a talk packed with insights into the state of the space industry, Beck shares his work building rockets capable of delivering small...

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. As a black woman from a tough part of the Bronx who grew up to attain all the markers of academic prestige, Dena...

On July 20, 2012, a mass shooting in a movie theater of Aurora, Colorado left the town, and its nation, reeling. To many -- including Tom Teves, who lost his son in the tragedy -- the news coverage that followed focused on all the wrong...

The legal system can seem like a complicated tangle of arcane rules and loopholes, and it can sometimes seem like it is designed to confuse. But it is possible, with the right application, for the legal system to rectify injustices....

A blank spot on a digital map can signal much more than a gap in data -- it can mean something is being intentionally hidden. Sharing the remarkable discovery of massive alleged detention camps in Xinjiang, China, Pulitzer Prize-winning...

Between 1840 and 1914, an estimated 40 million people left Europe. This is one of the most significant migrations in human history. So, who was leaving Europe? And why? Crash Course is on Patreon! You can support us directly by signing...

In an unmissable talk, journalist Carole Cadwalladr digs into one of the most perplexing events in recent times: the UK's super-close 2016 vote to leave the European Union. Tracking the result to a barrage of misleading Facebook ads...

Once upon a time, we coexisted with other human species. And there’s one place on Earth that may have taught us more about that than any other single site.

Today, in our series finale, we're going to talk about the great white whale of navigating online information: your social media feed. Social media shapes both our online and offline behaviors from how we engage in communities and...

Mark Shaw demos Ultra-Ever Dry, a liquid-repellent coating that acts as an astonishingly powerful shield against water and water-based materials. At the nano level, the spray covers a surface with an umbrella of air so that water bounces...

You called it, and we are grateful! Hank analyzes what went wrong with our intro, which gave us the perfect opportunity to talk about the awesomeness that is the Apollo Lunar Lander!