* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. In an emotionally charged talk, MacArthur-winning activist Majora Carter details her fight for environmental...

TED Fellow and urban designer Mitchell Joachim presents his vision for sustainable, organic architecture: eco-friendly abodes grown from plants and -- wait for it -- meat.

"I was the mystery of an anatomy, a question asked but not answered," says poet Lee Mokobe, a TED Fellow, in this gripping and poetic exploration of identity and transition. It's a thoughtful reflection on bodies, and the meanings poured...

Some might call sand coarse, rough and irritating, but there’s no denying that it’s used everywhere: from glass to asphalt, sand is a key ingredient for all sorts of materials in construction and technology. But this heavy reliance on...

Mandatory lockdowns, quarantines and shelter-in-place orders meant to contain COVID-19 have created a shadow pandemic of domestic abuse, says physician Kemi DaSilva-Ibru. Sharing alarming statistics on the rise of gender-based violence...

Philanthropy disruptor Sara Lomelin thinks communities can build power through collective giving and the model of "giving circles": groups of people with shared values who come together to make change, strengthen their social fabric and...

The world's most entertaining and useless self-help guide, from the brilliant mind behind the wildly popular webcomic xkcd and the #1 New York Times bestsellers What If? and Thing Explainer



For...

Museums have been a part of human history for over 2,000 years -- but they weren't always like the ones we visit today. J.V. Maranto uncovers the evolution of museums, from the first museum in 530 BC (curated by a princess) to PT...

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. Theaster Gates, a potter by training and a social activist by calling, wanted to do something about the sorry state...

Steven Soderbergh is known as much for his Oscar winning tense dramas as he is retiring... then not retiring. He was a part of the indy revolution in the 1980s and 90s that helped usher in a new case of writers and directors who didn't...

This Valentine’s Day, send a little love to your bacterial buddies! Our microbes keep us healthy, but some bacteria give their animal companions superpowers, like immunity to poison, or even invisibility!

In 2002, investigative journalist and TED Fellow Will Potter took a break from his regular beat, writing about shootings and murders for the Chicago Tribune. He went to help a local group campaigning against animal testing: "I thought it...

Scottish funnyman Rory Bremner convenes a historic council on the TEDGlobal stage -- as he lampoons Gordon Brown, Barack Obama, George W. Bush and a cast of other world leaders with his hilarious impressions and biting commentary. See if...

Hank tries not to stress you out too much as he delves into the functions and terminology of your sympathetic nervous system.


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Sympathetic Nervous System Controls the Bo
dy's Stress...

Paul Andersen explains how the behavior of various organisms is shaped by natural selection. The action of phototropism and the timing of photoperiodism have both been shaped by the relative availability of light. Courtship in the...

TED Fellow Nighat Dad studies online harassment, especially as it relates to patriarchal cultures like the one in her small village in Pakistan. She tells the story of how she set up Pakistan's first cyber harassment helpline, offering...

A classic puzzle in graph theory, the "Utilities problem", a description of why it is unsolvable on a plane, and how it becomes solvable on surfaces with a different topology.

In this video Paul Andersen shows conceptual thinking in a mini-lesson on boundary and initial conditions within systems.

Boundary conditions - the dividing line between system and enviro
nment
Initial condition - the...

every artist has a name, and every artist has a story. Laolu Senbanjo's story started in Nigeria, where he was surrounded by the culture and mythology of the Yoruba, and brought him to law school, to New York and eventually to work on...

Even if you have a cat of your own, you might not know these three amazing things about our furry friends!

When a freak tornado hit their hometown, sisters Caitria and Morgan O'Neill -- just 20 and 24 at the time -- realized they had to jump in and help. What they learned is: After a natural disaster, there's only a tiny window before the...

Fifty years of armed conflict in Colombia has left the countryside riddled with land mines that maim and kill innocent people who happen across them. To help keep communities safe from harm, TED Resident Carlos Bautista is developing an...

"The universe has already written the poem you were planning on writing," says Sarah Kay, quoting her friend, poet Kaveh Akbar. Performing "A Bird Made of Birds," she shares how and where she finds poetry. (Kay is also the host of TED's...

David Binder is a major Broadway producer, but last summer he found himself in a small Australian neighborhood, watching locals dance and perform on their lawns -- and loving it. He shows us the new face of arts festivals, which break...