History Brief: The Truman Doctrine – Reading Through History

This video offers a brief description of the Truman Doctrine and its impact.

How World War I Started: Crash Course World History 209

In which John Green teaches you about World War I and how it got started. Crash Course doesn’t usually talk much about dates, but the way that things unfolded in July and August of 1914 are kind of important to understanding the Great War. You’ll learn about Franz Ferdinand, Gavrilo Pincep, the Black Hand, and

Australian mathematician discovers applied geometry engraved on 3,700-year-old tablet

Old Babylonian tablet likely used for surveying uses Pythagorean triples at least 1,000 years before Pythagoras An Australian mathematician has discovered what may be the oldest known example of applied geometry, on a 3,700-year-old Babylonian clay tablet. Known as Si.427, the tablet bears a field plan measuring the boundaries of some land. The tablet dates

The Big Bang: Crash Course Big History #1

In which John Green, Hank Green, and Emily Graslie teach you about, well, everything. Big History is the history of everything. We’re going to start with the Big Bang, take you right through all of history (recorded and otherwise), and even talk a little bit about the future. It is going to be awesome. In

Globalization II – Good or Bad?: Crash Course World History #42

In which John asks whether globalization is a net positive for humanity. While the new global economy has created a lot of wealth, and lifted a lot of people out of poverty, it also has some effects that aren’t so hot. Wealth disparity, rising divorce rates, environmental damage, and new paths for the spread of

Globalization I – The Upside: Crash Course World History #41

In which John Green teaches you about globalization, a subject so epic, so, um, global, it requires two videos. In this video, John follows the surprisingly complex path of t-shirt as it criss-crosses the world before coming to rest on your doorstep, and eventually in your dresser. (Unless you’re one of those people who never

Decolonization and Nationalism Triumphant: Crash Course World History #40

In which John Green teaches you about the post-World War II breakup of most of the European empires. As you’ll remember from previous installments of Crash Course, Europeans spent several centuries sailing around the world creating empires, despite the fact that most of the places they conquered were perfectly happy to carry on alone. After

USA vs USSR Fight! The Cold War: Crash Course World History #39

In which John Green teaches you about the Cold War, which was occasionally hot, but on average, it was just cool. In the sense of its temperature. It was by no means cool, man. After World War II, there were basically two big geopolitical powers left to divide up the world. And divide they did.

World War II: Crash Course World History #38

In which John Green teaches you about World War II, aka The Great Patriotic War, aka The Big One. So how did this war happen? And what does it mean? We’ve all learned the facts about World War II many times over, thanks to repeated classroom coverage, the History channel, and your grandfather (or maybe

Communists, Nationalists, and China’s Revolutions: Crash Course World History #37

In which John Green teaches you about China’s Revolutions. While the rest of the world was off having a couple of World Wars, China was busily uprooting the dynastic system that had ruled there for millennia. Most revolutions have some degree of tumult associated with them, but China’s 20th century revolutions were REALLY disruptive. In