In this exchange, Galloway addresses criticism regarding his comments on obesity and diabetes by emphasizing the role of systemic issues like food deserts, industrial food companies, and lack of access to healthcare innovations like...

How do you find yourself when you belong to two seemingly opposing cultures? Embracing the paradoxes of dual identity, creative disruptor Farhad Mohit explores how being both Iranian and American allows him to navigate the tension...

As the 19th century gave way to the 20th, Black Americans were searching for ways to think about how and where they would fit into a post-slavery society. There were several competing schools of thought. Booker T. Washington and W.E.B....

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. Is the War on Drugs doing more harm than good? In a bold talk, drug policy reformist Ethan Nadelmann makes an...

In 1881, doctor William Halsted rushed to help his sister Minnie, who was hemorrhaging after childbirth. He quickly inserted a needle into his arm, withdrew his own blood, and transferred it to her. After a few uncertain minutes, she...

In a few decades, scientists predict that a widespread, severe drought will sweep across western North America -- and it'll last for decades.

Project Mercury taught NASA a lot about getting people off the surface of Earth and into orbit, and paved the way for all of their future space missions.

In which John Green teaches you about the War of 1812. The War of 1812 was fought between the United States and its former colonial overlord England. It started in, you guessed it 1812. The war lasted until 1815, and it resolved very...

Career analyst Dan Pink examines the puzzle of motivation, starting with a fact that social scientists know but most managers don't: Traditional rewards aren't always as effective as we think. Listen for illuminating stories -- and...

How can we disagree with one another, respectfully and productively? In this thoughtful talk, team builder Matt Trombley reflects on "agonism" -- the tendency to take a rigid stance on issues -- and shares why finding aspects of...

Would you negotiate with someone you knew to be evil, to save lives? Samantha Power tells a story of a complicated hero, Sergio Vieira de Mello. This UN diplomat walked a thin moral line, negotiating with the world's worst dictators to...

The first American astronaut to orbit Earth, John Glenn passed away yesterday in Ohio. But he leaves an admirable legacy.

Ten days after 9/11, a shocking attack at a Texas mini-mart shattered the lives of two men: the victim and the attacker. In this stunning talk, Anand Giridharadas, author of "The True American," tells the story of what happened next....

Reporter Jennifer 8. Lee talks about her hunt for the origins of familiar Chinese-American dishes -- exploring the hidden spots where these two cultures have (so tastily) combined to form a new cuisine.

In this hilariously lively performance, actress Sarah Jones channels an opinionated elderly Jewish woman, a fast-talking Dominican college student and more, giving TED2009 just a sample of her spectacular character range.

Abigail Washburn wanted to be a lawyer improving US-China relations -- until she picked up a banjo. The TED Fellow tells a moving story of the connections she's formed touring across the US and China while playing that banjo and singing...

After leading a well-established life as a pastor, father and husband, Paula Stone Williams could no longer deny her truth and transitioned. In this conversational and at times humorous reflection, Williams offers her perspective on the...

In which John Green teaches you about the Mexican-American War in the late 1840s, and the expansion of the United States into the western end of North America. In this episode of Crash Course, US territory finally reaches from the...

A founding member of the Axis of Evil Comedy Tour, standup comic Maz Jobrani riffs on the challenges and conflicts of being Iranian-American -- "like, part of me thinks I should have a nuclear program; the other part thinks I can't be...

In which John Green teaches you about the United States in the 1920s. They were known as the roaring 20s, but not because there were lions running around everywhere. In the 1920s, America's economy was booming, and all kinds of...

Hollywood needs to stop resisting what the world actually looks like, says actor, director and activist America Ferrera. Tracing the contours of her career, she calls for more authentic representation of different cultures in media --...

Is it a doodle dandy? A baseball team? The origins of the word yankee are unclear, though its usage in America as a pejorative is well-documented. Jessica Oreck and Rachael Teel track the varying levels of contempt that the word yankee...

What is debt? What is a deficit? And do these things have different outcomes for individuals and nations? Adriene and Jacob answer all these questions and more on this week's Crash Course Econ. Deficit and debt are easy to misunderstand,...

We often think of bias and prejudice as rooted in ignorance. But as psychologist Paul Bloom seeks to show, prejudice is often natural, rational ... even moral. The key, says Bloom, is to understand how our own biases work -- so we can...