Adults tend to think of kids as "future citizens" -- their ideas and opinions will matter someday, just not today. But kids make up a quarter of the population, so shouldn't they have a say in what the world they'll inherit will look...

After a horrific accident put her in the tabloid headlines, Kate Stone found a way to take control of her narrative -- and help prevent others from losing their privacy, too. Learn how she reclaimed her story in this personal talk...

In the year leading up to this talk, the web tool Twitter exploded in size (up 10x during 2008 alone). Co-founder Evan Williams reveals that many of the ideas driving that growth came from unexpected uses invented by the users themselves.

If architect and writer John Cary has his way, women will never need to stand in pointlessly long bathroom lines again. Lines like these are representative of a more serious issue, Cary says: the lack of diversity in design that leads to...

The global climate crisis will require us to transform the way we act, says His Holiness Pope Francis. Delivering a visionary TED Talk from Vatican City, the spiritual leader proposes three courses of action to address the world's...

Here's a stat worth knowing: In the UK, 63% of men who finish short-term prison sentences are back inside within a year for another crime. Helping them stay outside involves job training, classes, therapy. And it would pay off handsomely...

History has shown us that in moments of crisis, society can truly transform, says environmental educator Severn Cullis-Suzuki. Nearly 30 years ago, at just 12 years old, she spoke at the UN's Earth Summit in hopes of reversing the...

Digital public servant Amanda Renteria has seen that the millions of people who rely on government welfare services are often discouraged from seeking them out, frustrated by long lines and unnecessarily complicated processes. At Code...

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences.

The way we're taught to live has got to change, says author Casey Gerald. Too often, we hide parts of...

Want your local politician to pay attention to an issue you care about? Send a monthly handwritten letter, says former mayor Omar Ahmad -- it's more effective than email, phone, or even writing a check. He shares four steps to writing a...

Summer, 2016: amid populist revolts, clashing resentments and fear, writer Anand Giridharadas doesn't give a talk but reads a letter. It's from those who have won in this era of change, to those who have, or feel, lost. It confesses to...

Glenn Cantave uses technology to highlight narratives of the oppressed. In a tour of immersive visual projects, he shares his work with the team at Movers and Shakers NYC, a coalition that executes direct action and advocacy campaigns...

One billion people worldwide are living with a disability, and too many of them are left unemployed or feeling like they need to hide their conditions due to discriminatory hiring practices, says social innovator and TED Fellow Ryan...

elon Musk discusses his new project digging tunnels under LA, the latest from Tesla and SpaceX and his motivation for building a future on Mars in conversation with TeD's Head Curator, Chris Anderson.

This chair is my legs -- this chair is my life, says accessibility champion Jane Velkovski, who uses a wheelchair after being diagnosed with Spinal Muscular Atrophy (SMA). With clarity and poise, he shares how his first motorized...

Luvvie Ajayi isn't afraid to speak her mind or to be the one dissenting voice in a crowd, and neither should you. "Your silence serves no one," says the writer, activist and self-proclaimed professional troublemaker. In this bright,...

What's it like to grow up within a group of people who exult in demonizing ... everyone else? Megan Phelps-Roper shares details of life inside America's most controversial church and describes how conversations on Twitter were key to her...

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,...

Can public spaces both reclaim the past and embrace the future? Landscape architect Walter Hood has explored this question over the course of an iconic career, with projects ranging from Lafayette Square Park in San Francisco to the...

With infectious energy, singer-songwriter Angélique Kidjo ties together the threads of her legendary career as a creative force and global activist. In conversation with journalist Femi Oke, she discusses how joy powers her music (and...

Hugh evans started a movement that mobilizes "global citizens," people who self-identify first and foremost not as members of a state, nation or tribe but as members of the human race. In this uplifting and personal talk, learn more...

Angelica Dass's photography challenges how we think about skin color and ethnic identity. In this personal talk, hear about the inspiration behind her portrait project, Human_, and her pursuit to document humanity's true colors rather...

In one day, in one city, in one neighborhood -- what if everyone put their guns down? Erricka Bridgeford is a peacemaker who wants to stop the murders and violence in her hometown of Baltimore. So she helped organize the Baltimore...

The Montreal Protocol proved that the world could come together and take action on climate change. Thirty years after the world's most successful environmental treaty was signed, atmospheric scientist Sean Davis examines the world we...