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Reaching heights of over 100 meters, Californian sequoias tower over Earth's other 60,000 tree species. But even these behemoths seem to have their limits: no sequoia on record has been able to grow taller than 130 meters. So what exactly is stopping these trees from growing taller, forever? Valentin Hammoudi investigates why trees have limited ...

Collaboration Collaboration is key to subtitling for TED: every set of subtitles requires at least two volunteers working together. For successful collaboration, we recommend that you: Reviewers should kickstart the collaboration process by contacting the translator (or transcriber) to communicate changes. TED style Contact us at translate@ted....

Please note the Mentoring Program is currently paused while we transition to a new format. Stay tuned for updates on our social channels Facebook, Instagram, and LinkedIn. Our mentoring program pairs TED Translators who are looking to develop their subtitling and reviewing skills with experienced volunteers who are eager to collaborate and shar...

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...

TED Translators and transcribers help spread ideas to a global audience. We use a free, state of the art subtitling platform called CaptionHub. Here's what you need to know to get started. Workflow Subtitles go through the following steps before publication: 1. Transcription TED provides an original transcript for all TED and TED-Ed content. Fo...

In April 2020, epidemiologist-in-training Sophie Rose volunteered to be infected with the virus that causes COVID-19. As a young, healthy adult, she's offering to take part in a human challenge trial, a study where participants are intentionally exposed to SARS-CoV-2 to test vaccines and gather critical data. Explaining how challenge trials coul...

Mary Bassett is fighting what may be the greatest stumbling block to equitable health care in the US: institutional racism.

Anastasia (Stacy) Penright is a corporate business initiatives consultant with Wells Fargo by day and a community leader by night.

TED Senior Fellow Yana Buhrer Tavanier explores human rights innovation at the intersection of activism, art, tech and science -- and their potential to instigate change.

Tom Zimmerman is a master inventor at IBM Research – Almaden exploring the frontiers of human-machine interaction and environmental sensing.

Tshering Tobgay is the president of the People's Democratic Party in Bhutan.

UPS's advanced analytics manager Mallory Freeman researches how to do the most good with data.

About this event: The event dedicated to volunteering. Two live speakers discussing their hands-on experience with volunteers and volunteering. The live talks will be complemented with one or two TED videos.

Jessica Kerr has been fascinated by the role of judges in society for over a decade, and increasingly concerned by the shroud of mystery that surrounds them.

As a Pittsburgh youth besieged by racism in the crumbling remains of the steel economy, Bill Strickland should have been one of the Rust Belt's casualties. Instead, he discovered the potter's wheel, and the transforming power of fountains, irrepressible dreams, and the slide show.

Eli Beer, the founder and president of United Hatzalah, has re-imagined first response by training EMT volunteers to respond to local calls and keep people alive until official help arrives.

On an unseasonably chilly Monday evening in Manhattan, hundreds stood in line in Times Square for up to two hours. As a city-dweller for seven years, I’ve seen queues this long for big Broadway openings or on New Year’s Eve. But this line was formed for a very different purpose -- for people to have their faces and stories featured in what J...

Alexa Meade paints mesmerizing, illusionistic portraits directly on living subjects, subverting familiar visual cues with perspective and color.

About this event: The event will examine ways that we can together create a better future for our country. Collaboration and volunteering will be key to discussing the creation of the future.

About this event: Come be inspired by some of the amazing 6-12th graders in Lawrence, KS. Saturday April 9th hear stories ranging from how to become a teen entrepreneur and the benefits of volunteering, to the importance of taking chances.

About this event: People in Calgary care and they show it with action. Calgarians volunteer double the amount of the national average. The city is home to more than 5,000 nonprofit organizations. And with a volunteering backbone including 100 years of the Calgary Stampede and almost 25 years of a growing Olympic legacy – ours is a city that volunteers great. ...

About this event: Organizing our TEDxDell Bratislava event we would like to encourage all speakers and attendees in the audience to think about our life inspirations and stories not only within the worklife but also outside. We select speakers with diverse background (culturally, different activities, areas of concern) but delivering strong message using their pe...

At TEDxTehran, one volunteer is a gold medal swimmer. Another is a personal chef. Of the volunteers for this event, which will take place on February 14, 75% are bilingual. Meanwhile, 30% speak three languages. Organizer Sara Mohammadi decided to create a visualization, below, of the TEDxTehran volunteers because the process of interviewing t...

About this event: As a woman with school-aged children, your life is busy with volunteering and running your household. What did you like to do, before you got so busy? Explore your interests and dreams. Invest in your interests and mission "on the side" so that you are ready to "launch" as your family becomes more independent.

About this event: It all started with the dream of organizing an event that had an impact in the society and that could bring together completely different points of view. After receiving the licensing and after forming the team, the hard work started. Volunteering for a cause such as TEDx is not only exciting, but also challenging.

As the one-year anniversary of the TED-Ed website nears, the TED-Ed team created a new video to walk users through the features on the site, like the ability to add questions, upload "dig deeper" materials and start discussion chains relating to any video. (This newest feature makes the website even more interactive for any type of learner.) ...

About this event: The COVID-19 pandemic has radically changed the way we work and socialize. It's also had tremendous impact on how we give back to our communities. This TEDxPlano Salon session digs into the challenges of volunteering and volunteer management in the "new normal." Participants will engage in a highly interactive discussion, including consideration...

About this event: The second TEDxVilnius event will host the theme Adventure of WONDER, which is chosen not by accident. The theme represents what the team is seeking: excite everybody’s curiosity, encourage interest, discover and above all to surprise! The talks will vary from volunteering, performing arts to engineering and 3D organ printing among many others. ...

About this event: We are a team of volunteering students from INPT, National of Posts et Teleommunications, who are passionate about bringing the TED mission of Ideas Worth Spreading to our community. Tapping into the local hotbed of creativity, technology, education and innovation, we are combining our skills, talents and enthusiasm to bring you remarkable ...