John Green is teaching history again. This time, we're looking at the history of Europe in 50 episodes. We'll start at the tail end of the so called Middle Ages, and look at how Europe's place in the world has developed and changed in...

Today we’re going to step back from hardware and software, and take a closer look at how the backdrop of the cold war and space race and the rise of consumerism and globalization brought us from huge, expensive codebreaking machines in...

In which John Green talks about the many revolutions of Latin America in the 19th century. At the beginning of the 1800s, Latin America was firmly under the control of Spain and Portugal. The revolutionary zeal that had recently created...

In which Hank and John Green teach you a Crash Course on the modern revolution, and the upside of the progress that humanity has made in the last 500 years or so. And while there are two sides to every history, and many of these changes...

In which John Green talks about the methods of writing history by looking at some of the ways that history has been written about the rise of the West. But first he has to tell you what the West is. And then he has to explain the Rise of...

We’re used to competitions with clear winners and losers: baseball games, math olympiads, pie-eating contests, and games involving thrones. We crown a victor and everyone else goes home empty-handed! In business, though, there isn’t just...

In a lyrical talk full of radical imagination, poet Aja Monet and community organizer phillip agnew share the story of how they fell in love and what they've learned about the powerful connection between great social movements and...

By 2050, it's estimated that over 65% of the world will be living in cities. We may think of nature as being unconnected to our urban spaces, but trees have always been an essential part of successful cities. Humanity has been uncovering...

Is art worth it? "Hell yeah," says graphic novelist R. Alan Brooks -- art has the power to scare dictators, inspire multitudes and change hearts and minds across the world. Reflecting on his journey to become an artist at a time when the...

"For all that's ever been said about climate change, we haven't heard nearly enough about the psychological impacts of living in a warming world," says science writer Britt Wray. In this quick talk, she explores how climate change is...

Paul Andersen teams up with Keith Hughes to explain why teaching evolution is not optional for high school biology teachers.

We need to have a talk about your future. You're going to die. We all are. And it's probably going to be expensive. This week on CC Econ, Adriene is talking about the economics of death. Some of the expense is tied to the cost of...

Animals are communicating -- but what are they saying? And can we talk back? Marine biologist David Gruber introduces Project CETI: a team of scientists, linguists and AI specialists hoping to decode sperm whale language. Using...

The post-World War II decades in Europe are sometimes called the Thirty Glorious Years. As those years wore on, tensions between East and West grew, and economic growth slowed or was unevenly distributed across Europe, protests and...

If we want to fix our politics, we have to do something about inequality, says social psychologist Keith Payne. Showing how economic inequality changes the way people see and behave towards one another, Payne helps explain the rise of...

Colleges and universities in the US make billions of dollars each year from sports, compromising the health and education of athletes -- who are disproportionately Black -- in the name of money, power and pride. Sports lawyer and...

In which John teaches you about the Seven Years War, which may have lasted nine years. Or as many as 23. It was a very confusing was. The Seven Years War was a global war, fought on five continents, which is kind of a lot. John focuses...

When you're getting medical treatment, or taking part in medical testing, privacy is important; strict laws limit what researchers can see and know about you. But what if your medical data could be used -- anonymously -- by anyone...

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. Physics and marketing don't seem to have much in common, but Dan Cobley is passionate about both. He brings these...

Mike Rugnetta is going to tell you stories of death, destruction, divine judgment, damnation, and the occasional happy ending. That's right, this week we're talking about the Apocalypse. Actually we're talking about a bunch of ways the...

In which John Green, Hank Green, and Emily Graslie teach you about evolution. So, in the last 3.8 billion years, life on Earth has evolved from single-celled prokaryotes to the dizzying array of life we have today. So how did all this...

Lindsay Amer is the creator of "Queer Kid Stuff," an educational video series that breaks down complex ideas around gender and sexuality through songs and metaphors. By giving kids and their families a vocabulary to express themselves,...

Just like animals, plants evolve and change over time. And you might think we'd be looking for things like fossils to figure out how they've changed, but some scientists are using a far less traditional resource: art.

We have the right to demand budgets to be equitable, to be fair, says economist Maja Bosnic. One way to get there is to make them gender-responsive. With examples from the nearly 80 countries around the world already factoring gender...