Monarch butterflies are dying at an alarming rate around the world -- a looming extinction that could also put human life at risk. But we have just the thing to help save these insects, says author Mary Ellen Hannibal: citizen scientists. Learn how these grassroots volunteers are playing a crucial role in measuring and rescuing the monarch's dwi...

Scientists predict climate change will displace more than 180 million people by 2100 -- a crisis of "climate migration" the world isn't ready for, says disaster recovery lawyer and Louisiana native Colette Pichon Battle. In this passionate, lyrical talk, she urges us to radically restructure the economic and social systems that are driving clima...

In a world that's wasting more food than ever before, why do one in nine people still go to bed hungry each night? Social entrepreneur Jasmine Crowe calls for a radical transformation to our fight to end global hunger -- challenging us to rethink our routine approaches to addressing food insecurity and sharing how we can use technology to gather...

Genuine apology goes beyond remorse, says legendary playwright Eve Ensler. In this frank, wrenching talk, she shares how she transformed her own experience of abuse into wisdom on what wrongdoers can do and say to truly repent -- and offers a four-step roadmap to help begin the process. (This talk contains mature content.)

"I was the first woman president of an African nation, and I do believe more countries ought to try that," says H.E. Ellen Johnson Sirleaf, Nobel laureate and former president of Liberia. Telling the story of how Liberian women helped rebuild their country after years of civil war, Sirleaf discusses why gender equality is essential to peace and ...

Comedian Gina Brillon commands the stage with an uproarious stand-up performance, poking fun at everyday interactions and annoyances. "Have you ever had somebody say something wrong with such confidence that it made you question how you've been saying it your whole life?" she jokes.

To tackle a problem as large as climate change, we need both science and Indigenous wisdom, says environmental activist Hindou Oumarou Ibrahim. In this engaging talk, she shares how her nomadic community in Chad is working closely with scientists to restore endangered ecosystems -- and offers lessons on how to create more resilient communities.

In a talk that could change how you see things, designer and artist Jiabao Li introduces her conceptual projects that expose the inherent bias of digital media. From a helmet that makes you "allergic" to the color red to a browser plug-in that filters the internet in an unexpected way, Li's creations uncover how technology mediates the way we pe...

Valorie Kondos Field knows a lot about winning. As the longtime coach of the UCLA women's gymnastics team, she won championship after championship and has been widely acclaimed for her leadership. In this inspiring, brutally honest and, at times, gut-wrenching talk, she shares the secret to her success. Hint: it has nothing to do with "winning."

Imagine waking in the middle of the night to an elephant ripping the roof from your house in search of food. This is a reality in some communities in Africa where, as wild spaces shrink, people and elephants are competing for space and resources like never before. In this engaging talk, zoologist Lucy King shares her solution to the rising confl...

Almost a billion people worldwide live in informal communities and slums, often without basic infrastructure like clean water, toilets or adequate roads. Urban planner Smruti Jukur Johari breaks down myths about these communities and shares examples of simple, common-sense solutions that arise when governments and architects work together with t...

After seeing the conditions in which children were held at a detention center on the US-Mexico border, Sister Norma Pimentel established a humanitarian respite center in Texas where people can get clean clothing, a warm shower and a hot meal. In this powerful talk, Sister Pimentel discusses her lifelong work restoring human dignity at the border...

"Co-parenting" isn't a buzzword -- it's a way of showing up for your family openly, consistently and lovingly, says storyteller and father Joel Leon. In this moving talk, he challenges all parents to play an equal, active role in their children's daily lives, even in a world that often places the weight of sacrifice on mothers alone. Leon encour...

At age 81, actor and activist Jane Fonda is putting herself on the line for the planet -- literally. In a video interview with TEDWomen curator Pat Mitchell, Fonda speaks about getting arrested multiple times during Fire Drill Fridays, the weekly climate demonstrations she leads in Washington, DC -- and discusses why civil disobedience is becomi...

Twenty years after the death of her father, famed Brazilian architect Roger Zmekhol, filmmaker Denise Zmekhol returned to her home country to learn more about how he brought mid-century modern design to Brazil and to see his celebrated "Pele de Vidro" (Skin of Glass) building. She tells the story of the building's complicated history and its fate.

Pat Mitchell has nothing left to prove and much less to lose -- she's become a "dangerous woman." Not dangerous as in feared, she says, but fearless: a force to be reckoned with. In this powerful call to action, Mitchell invites all women, men and allies to join her in embracing the risks necessary to create a world where safety, respect and tru...

"It shouldn't be an act of feminism to know how your body works," says gynecologist and author Jen Gunter. In this revelatory talk, she explains how menstrual shame silences and represses -- and leads to the spread of harmful misinformation and the mismanagement of pain. Declaring the era of the menstrual taboos over, she delivers a clear, much-...

Between 2006 and 2016, the number of drug patents granted in the United States doubled -- but not because there was an explosion in invention or innovation. Drug companies have learned how to game the system, accumulating patents not for new medicines but for small changes to existing ones, which allows them to build monopolies, block competitio...

Nearly half a million people in the US are in jail right now without being convicted of a crime, simply because they can't come up with the money to pay cash bail. To try and fix this system, public defender and activist Robin Steinberg asked a straightforward question: What if we paid bail for them? In conversation with TED Radio Hour host Mano...

Water is essential to life. Yet in the eyes of the law, it remains largely unprotected -- leaving many communities without access to safe drinking water, says legal scholar Kelsey Leonard. In this powerful talk, she shows why granting lakes and rivers legal "personhood" -- giving them the same legal rights as humans -- is the first step to prote...

Offering her soulful music as medicine, Mohawk songwriter Shawnee sings two original songs dedicated to fellow Two-Spirit people and anyone who is searching for their place in the world.

Firing off her formidable beatboxing skills, musician Butterscotch serenades -- over a hauntingly beautiful backtrack made live on stage -- and shares pieces of her own story as a shoutout to those struggling through dark times. "We have to be compassionate with ourselves, allow acceptance for who we are -- even on our worst days when we're stil...

"Branding is the profound manifestation of the human spirit," says designer and podcaster Debbie Millman. In a historical odyssey that she illustrated herself, Millman traces the evolution of branding, from cave paintings to flags to beer labels and beyond. She explores the power of symbols to unite people, beginning with prehistoric communities...

"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 someone by gaining access to their devices without their knowledge -- and calls on antivirus companies to recognize ...

The world's most valuable tech companies profit from the personal data you generate. So why aren't you getting paid for it? In this eye-opening talk, entrepreneur and technologist Jennifer Zhu Scott makes the case for private data ownership -- which would empower you to donate, destroy or sell your data as you see fit -- and shows how this growi...

"A political cartoon is a barometer of freedom," says Rayma Suprani, who was exiled from her native Venezuela for publishing work critical of the government. "That's why dictators hate cartoonists." In a talk illustrated with highlights from a career spent railing against totalitarianism, Suprani explores how cartoons hold a mirror to society an...

There's a simple and powerful way to confront the world's most pressing crises, says women's rights activist Yifat Susskind: think like a mother. As she puts it: "When you think like a mother, you prioritize the needs of the many, not the whims of the few." Follow along as she shares moving stories of people around the world who embody this mind...

What if you could repay loans through volunteering and mentorship instead of money? Activist Angie Murimirwa shares how a game-changing economic tool known as "social interest" is reinvigorating sub-Saharan communities once trapped in cycles of poverty. Join her as she explains how this approach to lending is creating opportunities for thousands...

"You don't predict the future -- you imagine the future," says sci-fi writer Charlie Jane Anders. In a talk that's part dream, part research-based extrapolation, she takes us on a wild, speculative tour of the delights and challenges the future may hold -- and shows how dreaming up weird, futuristic possibilities empowers us to construct a bette...

After the devastating rebel invasion of Freetown in 1999 and the Ebola epidemic in 2014, Yvonne Aki-Sawyerr, mayor of the city, refused to be paralyzed by her frustration with the status quo. Instead, she used her anger as a catalyst for action. In this inspiring talk, she shares how she transformed her city by taking the risks necessary to brin...