What would a sustainable, universally beneficial economy look like? "Like a doughnut," says Oxford economist Kate Raworth. In a stellar, eye-opening talk, she explains how we can move countries out of the hole -- where people are falling short on life's essentials -- and create regenerative, distributive economies that work within the planet's e...

Logistics expert Katie Francfort invites us to dream of finding solutions in unexpected places. In this thought experiment, she imagines: What if mosquitoes could have a role to play in the supply chain of vaccine delivery? She uses this far-fetched idea to inspire us to think boldly on other problems we're facing -- and how the problem might be...

"I love paper, and I love technology," says physicist and former sheep herder Kate Stone, who's spent the past decade working to unite the two. Her experiments combine regular paper with conductive inks and tiny circuit boards to offer a unique, magical experience. To date, applications include a newspaper embedded with audio and video, posters ...

Who's to say an apple is red or that grass is green? Humorist and former science teacher Bryan Kett describes life with colorblindness, explaining that it's not just him -- everyone's experience of color is subjective. Follow Kett as he explores the scientific, philosophical and social dimensions of living life on a certain color scale.

Book designer Chip Kidd knows all too well how often we judge things by first appearances. In this hilarious, fast-paced talk, he explains the two techniques designers use to communicate instantly -- clarity and mystery -- and when, why and how they work. He celebrates beautiful, useful pieces of design, skewers less successful work, and shares ...

The Heisenberg Uncertainty Principle states that you can never simultaneously know the exact position and the exact speed of an object. Why not? Because everything in the universe behaves like both a particle and a wave at the same time. Chad Orzel navigates this complex concept of quantum physics. [Directed by Henrik Malmgren, narrated by Addis...

Austrian physicist Erwin Schrödinger, one of the founders of quantum mechanics, posed this famous question: If you put a cat in a sealed box with a device that has a 50% chance of killing the cat in the next hour, what will be the state of the cat when that time is up? Chad Orzel investigates this thought experiment. [Directed by Agota Vegso, na...

With candor and cunning, sex historian Kate Lister chronicles the curious journey of an ancient, honest word with innocent origins and a now-scandalous connotation in this uproarious love letter to etymology, queens, cows and all things "cunt." (This talk contains mature language.)

Chip Kidd doesn't judge books by their cover, he creates covers that embody the book -- and he does it with a wicked sense of humor. In this deeply felt (and deeply hilarious) talk, he shares the art and the philosophy behind his cover designs. (This talk is from The Design Studio session at TED2012, guest-curated by Chee Pearlman and David Rock...

Why is J.R.R. Tolkien's Lord of the Rings trilogy so compelling? How about The Matrix or Harry Potter? What makes these disparate worlds come alive are clear, consistent rules for how people, societies -- and even the laws of physics -- function in these fictional universes. Author Kate Messner offers a few tricks for you, too, to create a world...

The Vicar of St David's Church, Exeter, in the UK, is unafraid to take on some of religion's tougher issues.

"Abandon all hope, ye who enter here..." Inscribed above the Gate of Hell, this prophecy sets into motion an epic journey for salvation. Written over 10 years, Dante Alighieri's three-part narrative poem "Divine Comedy" is both an allegorical imagining of the soul's journey towards God and a scathing political commentary. Sheila Maria Orfano sha...

Pandora was the first mortal woman, breathed into being by Hephaestus, god of fire. The gods gave her gifts of language, craftsmanship and emotion. From Zeus she received two gifts: the trait of curiosity and a heavy box screwed tightly shut -- never to be opened. But what treasure could never be seen by human eyes, and why was it in her care? I...

Physicist Werner Heisenberg said, "When I meet God, I am going to ask him two questions: why relativity? And why turbulence? I really believe he will have an answer for the first." As difficult as turbulence is to understand mathematically, we can use art to depict the way it looks. Natalya St. Clair illustrates how Van Gogh captured this deep m...

Chelsea Shields is a biocultural anthropologist, a research and strategy consultant, and an outspoken activist for women's rights.

The term Gross Domestic Product is often talked about as if it were “handed down from god on tablets of stone.” But this concept was invented by an economist in the 1930s. We need a more effective measurement tool to match 21st century needs, says Michael Green: the Social Progress Index. With charm and wit, he shows how this tool measures socie...

Swedish folk duo First Aid Kit blend sweet vocal harmonies, raw melodies and honest lyrics in a lively performance of their original songs: "King of the World", "Nothing Has to Be True" and "My Silver Lining."

Every Google search or YouTube upload costs the global network both energy and resources. As Google's head of sustainability, it's Kate E. Brandt's job to strategize solutions that cut the cost on our environment and our economy. In an innovative talk, she dives into her plan to green up Google by creating a circular economy which reuses, recycl...

For all those days you've ever checked the clock and thought, "Where did the last hour go?" These talks share helpful hacks for stealing back a few seconds, minutes or even hours from your busy workday.

Katie Hinde is studying breast milk’s status as the first superfood, providing babies with invaluable microbes custom-tailored to their individual needs, via an incredible and unlikely dialogue between the mother’s enzymes and the baby’s saliva.

Katie Paterson's art is at once understated and monumental.

Katie Mack unravels the connections between the smallest particles, the largest interstellar objects and the various ways the universe might end.

Nearly 400 years ago, a tiny town in Germany made a bargain with God: spare its people from the Black Plague and we'll put on a play in your honor... forever. And it worked! Now every decade, the entire town comes together to stage the play, drawing massive crowds to one of the largest religious spectacles in the world. But problematic parts of ...

Google's "Jolly Good Fellow," Chade-Meng Tan, talks about how the company practices compassion in its everyday business -- and its bold side projects.

We could realistically see people starting to live and work on the Moon in the next decade -- and how we do it matters, says space policy researcher Jessy Kate Schingler. In this fascinating talk, she discusses the critical issues that arise when we consider civilization in outer space -- such as governance, property rights and resource manageme...

In his memoir, "There Will Be No Miracles Here," Casey Gerald reimagines what it means to truly live and succeed in our society.

One of Google's earliest engineers, Chade-Meng Tan is now Google's Jolly Good Fellow -- the head of personal growth at the groundbreaking search company.

Find out what sound a black hole makes, if (possible) alien life is blocking starlight and other astounding things happening in our galaxy -- and beyond.

Interviews can be intimidating. These talks are full of useful tips, tricks and advice that can help you land the job you’re after.

Kate Hartman creates devices and interfaces for humans, houseplants, and glaciers. Her work playfully questions the ways in which we relate and communicate.