In the past three decades, says Michael Sandel, the US has drifted from a market economy to a market society; it's fair to say that an American's experience of shared civic life depends on how much money they have. (Three key examples:...

An incredibly bright burst of energy and a dent covered with ice give us insights into planetary and universal structure.

A very clever proof of Euler's characteristic formula using spanning trees.

"Full access to a person's phone is the next best thing to full access to a person's mind," says cybersecurity expert Eva Galperin. In an urgent talk, she describes the emerging danger of stalkerware -- software designed to spy on...

Hector Ruiz, the executive chair of AMD, wants to give Internet access to everyone. In this talk, he shares his extraordinary life story and describes AMD's 50x15 initiative that calls for connecting 50 percent of the world by 2015.

Mosquitos might not be everyone’s favorite bug, but there’s a way we might at least be able to more comfortably coexist with these agitating arthropods.

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Early education is critical to children's success -- but millions of kids in the United States still don't have access to programs that prepare them to thrive in kindergarten and beyond. Enter the UPSTART Project, a plan to bring early...

Do you remember the exciting rumor about NASA’s EMdrive? Well, now it’s official: NASA has created their own EM drive! Meanwhile, SpaceX has a plan which will make the internet more accessible.

Do you remember the exciting rumor about NASA’s EMdrive? Well, now it’s official: NASA has created their own EM drive! Meanwhile, SpaceX has a plan which will make the internet more accessible.

What does a cultural Big Bang look like? For Amit Sood, director of Google's Cultural Institute and Art Project, it's an online platform where anyone can explore the world's greatest collections of art and artifacts in vivid, lifelike...

Equity expert Sara Sanford offers a certified playbook that helps companies go beyond good intentions, using a data-driven standard to actively counter unconscious bias and foster gender equity -- by changing how workplaces operate, not...

Without the internet, how would you have coped with the pandemic -- from work and school, to maintaining your closest relationships? In the digital age, reliance on the internet is so common and seems ubiquitous, yet billions of people...

The world needs clean water, and more and more, we're pulling it from the oceans, desalinating it, and drinking it. But what to do with the salty brine left behind? In this intriguing short talk, TED Fellow Damian Palin proposes an idea:...

Some foundational ideas in linear algebra: Span, linear combinations, and linear dependence.

Election infrastructure in the United States is crumbling, says technologist Tiana Epps-Johnson, and, even worse, election officials are increasingly being attacked simply for doing their jobs. How can the country rebuild trust in its...

Tech that can decode your brain activity and reveal what you're thinking and feeling is on the horizon, says legal scholar and ethicist Nita Farahany. What will it mean for our already violated sense of privacy? In a cautionary talk,...

Trust: How do you earn it? Banks use credit scores to determine if you're trustworthy, but there are about 2.5 billion people around the world who don't have one to begin with -- and who can't get a loan to start a business, buy a home...

Networking can seem so hard -- but not if you have the right advice. Try taking advantage of weak ties; you never know what friend of a friend of a friend can aid you in your dreams. Lisa Green Chau outlines how being proactive and...

Nobel Peace laureate Jody Williams brings tough love to the dream of world peace, with her razor-sharp take on what "peace" really means, and a set of profound stories that zero in on the creative struggle -- and sacrifice -- of those...

The disastrous earthquake in Haiti taught humanitarian groups an unexpected lesson: the power of mobile devices to coordinate, inform and guide relief efforts. At TEDxRC2, Paul Conneally shows extraordinary examples of social media and...

This week we’re taking our discussion of stratification global. We’ll look at First and Third World countries and the reasons why these terms are no longer used. We’ll introduce the four types of country categories we now use: high...

Diana Laufenberg shares three surprising things she has learned about teaching -- including a key insight about learning from mistakes.

Today we’re going to discuss what it means for a place to be “developed”. Development is often associated with economic success — that is countries with higher standards of living and material wealth like those found in Europe and North...