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 ecological limits.

It's a fateful moment in history. We've seen divisive elections, divided societies and the growth of extremism -- all fueled by anxiety and uncertainty. "Is there something we can do, each of us, to be able to face the future without fear?" asks Rabbi Lord Jonathan Sacks. In this electrifying talk, the spiritual leader gives us three specific ways we can move from the politics of "me" to the politics of "all of us, together."

We all know we should spend less and save more, yet many of us struggle to do it and blame ourselves. Turns out, our environment is what we really need to change, and behavioral scientist Wendy De La Rosa explains why.

What drives society's understanding of right and wrong? In this thought-provoking talk, futurist Juan Enriquez offers a historical outlook on what humanity once deemed acceptable -- from human sacrifice and public executions to slavery and eating meat -- and makes a surprising case that exponential advances in technology leads to more ethical behavior.

In the grand scheme of history, modern reality is a bizarre exception when compared to the worlds of ancient, precolonial and Indigenous civilizations, where myths ruled and gods roamed, says historian Greg Anderson. So why do Westerners today think they're right about reality and everybody else is wrong? Anderson tears into the fabric of objective reality to reveal the many universes that lie beyond -- and encourages a healthy reimagining of what other possible ways of being human could…

What if everything in your life was randomized: from the food you ate to the things you did and the places you traveled? Computer scientist Max Hawkins created algorithms to make decisions like these for him -- and got hooked on the experience for two years. He shares how relinquishing choice sent him across the world and opened him up to the beautiful complexity and richness of life. It makes you wonder: What lies just outside your comfort zone?

The value of money is determined by how much (or how little) of it is in circulation. But who makes that decision, and how does their choice affect the economy at large? Doug Levinson takes a trip into the United States Federal Reserve, examining how the people who work there aim to balance the value of the dollar to prevent inflation or deflation. [Directed by Qa'ed Mai, narrated by Doug Levinson].

How do you get the environment to the top of everyone's priority list? You can't, says climate advocate Angela Francis -- but you can get them to care about improving their lives. In this pragmatic talk, she shares her playbook for helping even the most skeptical among us see the benefits of a greener economy on their health, wealth and well-being.

Is art worth it? "Hell yeah," says graphic novelist R. Alan Brooks -- art has the power to scare dictators, inspire multitudes and change hearts and minds across the world. Reflecting on his journey to become an artist at a time when the world felt like it was burning, Brooks shares how creating something from a place of sincerity and passion can positively impact people in ways you may never know.

When personal relationships and ideological differences collide, the result can lead to strained relations -- or even years of silence and distance. Actor Betty Hart offers an alternative to cold shoulders and haughty hellos: compassion, and a chance for growth and change instead of losing important time with loved ones.

Aliens have invaded ancient history: they've cropped up in humanity's past through popular television and movies, displacing facts with absurd yet commonplace beliefs like "aliens built the pyramids." Archaeologist Sarah Kurnick illustrates why these misconceptions perpetuate racist and xenophobic notions of history and culture -- and demonstrates how you can help debunk these dangerous, outlandish myths.

Debbie Millman talks to author Cheryl Strayed about her childhood, career and the value of taking a very long hike. Listen and subscribe to "Design Matters" and more podcasts from the TED Audio Collective at audiocollective.ted.com.

In 2002, the Colombian guerrilla movement known as the FARC (Revolutionary Armed Forces of Colombia) kidnapped Ingrid Betancourt in the middle of her presidential campaign. For the next six years, Betancourt was held hostage in jungle prison camps where she was ravaged by malaria, fleas, hunger and human cruelty until her rescue by the Colombian government. In this deeply personal talk, the politician turned writer explains what it's like to live in a perpetual state of fear -- and how her…

To futureproof your job against robots and AI, you should learn how to code, brush up on your math skills and crack open an engineering textbook, right? Wrong. In this surprisingly comforting talk, tech journalist Kevin Roose makes the case that rather than trying to compete with the machines, we should instead focus on what makes us uniquely human.

Corporations and big business have wrecked the environment, but disadvantaged communities living in "sacrifice zones" -- urban areas heavily polluted and poisoned by industry -- are paying the price, says climate justice leader Angela Mahecha Adrar. Explaining why racial and economic justice must be at the center of climate action, she takes us to the frontline communities that are leading the world to clean, innovative and just climate solutions -- like Cooperativa Tierra y Libertad, a…

On his first day as president, Joe Biden signed a letter of acceptance that set in motion the 30-day process for the United States to re-join the Paris Agreement on climate. On the day the US returns to the accord, John Kerry, the US Special Envoy for Climate, sits down with Nobel Laureate Al Gore to discuss the make-or-break decade ahead of us. Listen as Kerry lays out how the US fits into the global plan to get to net-zero emissions, explains why the COP26 UN climate conference could be…