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

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

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.

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

Dear current and future daughters ...

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 ...

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.

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.

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

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].

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

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

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...

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...

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

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

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.

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.

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 ...

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.

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

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.

Paula Stone Williams is a pastor, counselor, speaker, LGBTQ ambassador and gender equity advocate.

Beautiful talks by wonderful fathers and the children who love them.

What happens when purpose and passion overshadow fear? Follow in the steps of these outstanding women who let their ferocity, fortitude and wisdom guide them in living -- and speaking -- their truth. (Curated in partnership with Dove.)

Yassmin Abdel-Magied wears many hats, including a hijab. She's a mechanical engineer, writer and activist who campaigns for tolerance and diversity.

The age of bioengineering is upon us, with scientists' understanding of how to engineer cells, tissues and organs improving at a rapid pace. Here, how this could affect the future of our physical bodies.

Mick Ebeling founded the Not Impossible Foundation, a nonprofit that develops creative solutions to real-world problems.