Despite an attack on his daughter Malala in 2012, Ziauddin Yousafzai continues his fight to educate children in the developing world.

Engineer and daredevil cave explorer Bill Stone is obsessed with discovery -- on Earth and beyond.

Greg Stone was a key driver in the establishment of the Phoenix Island Protected Area in the island nation of Kiribati. The second-largest marine protected area in the world -- and one of the most pristine -- PIPA is a laboratory for exploring and monitoring the recovery of coral reefs from bleaching events.

Florida-based photographer Mac Stone specializes in documenting the Everglades, an area he prizes for its wildlife and flora.

Sydney Chaffee believes that teachers and students can change the world together.

Dear current and future daughters ...

The tiny atoms that make up our world are made up of even tinier protons, neutrons and electrons. Though the number of protons determines an atom's identity, it's the electrons -- specifically, their exact location outside the nucleus -- that particularly perplex scientists. George Zaidan and Charles Morton show how to make an educated guess of ...

Get a bird's eye view of Earth's mesmerizing beauty, from the sky and outer space.

Bob Stein has long been in the vanguard: immersed in radical politics as a young man, he grew into one of the founding fathers of new media. He’s wondering what sorts of new rituals and traditions might emerge as society expands to include increasing numbers of people in their eighties and nineties.

Kevin Stone's clinic treats joint injury using the latest in bio-medicine: reconstructing damaged tissue, even replacing whole joint parts, with lab-grown cartilage and ligament.

Erica Stone works at the intersection of writing, teaching, and community organizing.

Meklit Hadero is an Ethiopian-American singer-songwriter living the cultural in-between, both in her own luminous compositions and as a co-founder of the Nile Project.

A bump on the head, a mysterious femme fatale and a strange encounter on a windswept peak all add up to a heck of a night for Manny Brot, Private Eye. Watch as he tries his hand at saving the dame and getting the cash! Shudder at the mind-bending geometric riddles! Thrill to the stunning solution of The Case of the Missing Fractals. [Directed by...

How do cancer cells grow? How does chemotherapy fight cancer (and cause negative side effects)? The answers lie in cell division. George Zaidan explains how rapid cell division is cancer's "strength" -- and also its weakness. [Directed by Biljana Labovic, narrated by George Zaidan].

Be inspired to go out and rediscover the wonders of the natural world with these talks that will give you a deeper understanding of where the wild things grow.

Makhtoum Abdalla is passionate about equal access to quality education for all children and young people.

Zachariah Mampilly is an expert on the politics of both violent and non-violent resistance.

For those times when living a life far beyond our planet looks a little too appealing.

Build Back Better features thought leaders and change agents evaluating our pre-pandemic systems and practices in an effort to create a more sustainable, efficient and just world. (Made possible with the support of Qatar Foundation)

These speakers sport impressive moustaches. Watch in honor of Movember, the month in which men let their ‘staches grow wild to raise money for men’s health causes.

A year ago, political scientist Tarig Hilal captivated the audience at TEDxKhartoum with the story of the Sudan he saw -- not a place of violent strife, political unrest or pervasive poverty, but a country of beautiful natural landscapes, a rich history and a hopeful generation of changemakers ready to turn a new chapter in their country’s histo...

Quench your thirst for adventure with these breathtakingly bold talks that explore the Earth’s most spectacular corners, depths and peaks.

Paula Stone Williams knew from a young age that she was transgender. But as she became a parent and prominent evangelical pastor, she feared that coming out would mean losing everything. In this moving, deeply personal talk, Paula and her son Jonathan Williams share what Paula's transition meant for their family -- and reflect on their path to r...

These speakers have that special blend of wisdom and warmth that makes you wish you could call them up for life advice.

Take this tour of medicine's future with some of the trailblazing doctors charting its course. Once you've seen a transplantable human kidney created from a 3D printer, almost anything is imaginable ...

Robyn Stein DeLuca asks, What do we really know about PMS?

These eye-opening talks call into question some of the popular misconceptions, fallacies and exaggerated rumors of modern civilization.

Giles Duley began his career as a fashion photographer. When it was time for a change he found himself on a journey of war and hardship.

About this event: The event hosts speakers from age 17 to 87 from diverse fileds of life all Sudanese despite their different looks and sizes. They all are survisors against the odds and are able to make it in Sudan. We are ceklebrating our diversity and our strength and connecting to all the people of Sudan by staying in the country when many are leaving. So we ...

Paul Conneally is the public communications manager for the International Federation of the Red Cross and Red Crescent Societies, and a leader in using digital technologies for humanitarian aid.