Why are some countries rich? Why are some countries poor? In the end it comes down to Productivity. This week on Crash Course Econ, Adriene and Jacob investigate just why some economies are more productive than others, and what happens...

In which John Green teaches you about a time of relative tumult in the United States, the 1960s. America was changing rapidly in the 1960s, and rights movements were at the forefront of those changes. Civil Rights were dominant, but the...

For the longest time, doctors basically ignored the most basic and frustrating part of being sick -- pain. In this lyrical, informative talk, Latif Nasser tells the extraordinary story of wrestler and doctor John J. Bonica, who persuaded...

Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.

Social psychologist Thomas Curran explores how the pressure to be perfect -- in our social media feeds, in school, at work -- is driving a rise in mental illness, especially among young people. Learn more about the causes of this...

Anjali Kumar went looking for God and ended up finding something else entirely. In an uplifting, funny talk about our shared humanity, she takes us on a spiritual pilgrimage to meet witches in New York, a shaman in Peru, an infamous...

Today on Crash Course Literature, John Green teaches you about The Yellow Wallpaper, by Charlotte Perkins Gilman. The Yellow Wallpaper tells the story of a woman who is a prisoner in her own home, in the name of caring for her mental...

In which Jacob Clifford and Adriene Hill launch a brand new Crash Course on Economics! So, what is economics? Good question. It's not necessarily about money, or stock markets, or trade. It's about people and choices. What, you may ask,...

Hank and his brother John discuss heredity via the gross example of relative ear wax moistness.

Naming science as his chief inspiration, Mathieu Lehanneur shows a selection of his ingenious designs -- an interactive noise-neutralizing ball, an antibiotic course in one layered pill, asthma treatment that reminds kids to take it, a...

Before we dive into the big questions of philosophy, you need to know how to argue properly. We’ll start with an overview of philosophical reasoning and breakdown of how deductive arguments work (and sometimes don’t work).

Today we start a three episode arc on the rise of a global telecommunications network that changed the world forever. We’re going to begin with computer networks, and how they grew from small groups of connected computers on LAN networks...

In a talk that's equal parts funny and urgent, consultant Vinay Shandal shares stories of the world's top activist investors, showing how individuals and institutions can take a page from their playbook and put pressure on companies to...

New ReviewSee where Patrick Henry gave his famous "Give me Liberty, or Give me Death!" at St John’s Church in Richmond

New ReviewDolly Madison's journey begins in North Carolina, where she marries John Todd and later becomes a widow. She finds love again with James Madison, adapting to his political world. As First Lady, she excels in hosting events that promote...

How comedian John Bishop inspired the film Is This Thing On?Credit: The Independent

Aprende sobre los adverbios de frecuencia en inglés. Algunos de los adverbios son: never, always, usually, frequently, often, sometimes, occasionally, rarely.

In this interesting module, you will learn about Business Email Compromise attacks, also known as 'CEO Fraud'. You will visually see how they trick us into initiating large wire transfers, what the red flags are, and then you will learn...

In Part I of this engaging module, you will learn how targeted email phishing is executed against you, as well as recognize some of the major red flags to be able to readily detect these emails in the future.

This video explores the concept of intertwining plot lines in storytelling. The video highlights how authors can effectively bring together multiple plot lines, demonstrate character development, and convey the underlying themes of the...

In this video, viewers are guided on how to create suspense in writing by immersing readers in the main character's emotions. By incorporating mysterious elements such as sounds and shadows, using vivid diction to evoke tension, and...

This World Cultures video continues the discussion about the Reformation.

Howcast - Learn how to record a solo album with this Howcast harmonica tutorial from John Hopper of Blues Traveler.

Howcast - Learn how to sing like John Mayer from vocal coach Cari Cole in this Howcast singing tutorial.