Alex Wissner-Gross applies science and engineering principles to big (and diverse) questions, like: "What is the equation for intelligence?" and "What's the best way to raise awareness about climate change?"

A self-described "human Venn diagram," Christina Wallace has crafted a career at the intersection of business, the arts and technology.

Since the age of 12, in her island of Bali and around the world, Melati Wijsen has been a leading voice for change.

Dan Pallotta is on a focused mission to change the way the donating public things about giving.

Jinha Lee wants to weave digital computing into the flow of our physical reality.

As "Captain of Moonshots" for X, Astro Teller oversees the secret projects that could reshape our lives in coming decades.

Lisa Harouni is the co-founder of Digital Forming, working in "additive manufacturing" -- or 3D printing.

As CEO of InteraXon, Ariel Garten works to close the gap between science, art, business and technology.

TED Resident Beth Malone brings bold art to public spaces across the US, encouraging artists to have a sense of humor, to be vulnerable and take creative risks.

Lucy Marcil is providing fiscal services to low-income families in the doctor’s waiting room.

As an actor, filmmaker and founder of the online community HITRECORD, Joseph Gordon-Levitt seeks to inspire creativity through collaboration.

Rohan Pavuluri helps American families navigate an increasingly complex and expensive legal system.

Shabana Basij-Rasikh is the cofounder and president of the School of Leadership, Afghanistan (SOLA), the country's first and only girls' boarding school.

Environmental entrepreneur

Tech Entrepreneur

Labor entrepreneur

Neuroscientist + entrepreneur

Hospital entrepreneur

Education entrepreneur

Environmental entrepreneur

Biomedical entrepreneur

Athlete + entrepreneur

Accountability entrepreneur

About this event: Join with other Boston thought leaders for a simulcast of TEDCity2.0 and lively conversation at Space with a Soul, a coworking space housed in Boston's very own Innovation District. Upon arrival, please head directly to the 7th floor, where you will be greeted by TEDx volunteers. Attendees are free to stay for as many sessions as they are able, ...

In 2013, TED published more than 250 talks, each with an idea worth spreading. And yet, certain ideas seemed to resonate throughout the year, as if speakers at different events were singing parts of the same choral symphony. As 2013 draws to a close, here is a look at some of the big ideas we parsed this year. Consider it the rousing finale ...

Creating characters and stories richly inspired by Arabic tradition, Suleiman Bakhit is fighting to change how the West sees Arab youth -- and how Arab youth see themselves -- one superhero at a time. You started producing comics after you got attacked after 9/11. What happened? I was a student at the University of Minnesota at the tim...

Daring, bold, systems-disrupting change requires big dreams and an even bigger vision. For Session 5 of TED2020, the Audacious Project, a collaborative funding initiative housed at TED, highlighted bold plans for social change from Southern New Hampshire University, SIRUM, BRAC, Harlem Children's Zone, Humanitarian OpenStreetMap Team (HOT), Proj...

Attention fellow word nerds: Daily haiku-ing fired up my creativity, sweetened my days, brought me closer to others, and more, says TED Ideas Editor Daryl Chen. This post is part of TED’s “How to Be a Better Human” series, each of which contains a piece of helpful advice from someone in the TED community; browse through all the posts here. I...

Animator + entrepreneur

Entrepreneur + educator