Tara Houska is an attorney who fights for indigenous rights and justice.

Tara Djokic discovered direct evidence that indicates some of Earth's oldest life once thrived in hot springs on land.

Drew Berry creates stunning and scientifically accurate animations to illustrate how the molecules in our cell move and interact.

Drew Dudley believes leadership is not a characteristic reserved for the extraordinary. He works to help people discover the leader within themselves.

The co-host of TEDxMidAtlantic, Dave Troy is a serial entrepreneur and a data-viz fan.

With cello, piano and violin, sisters Maria, Lucia and Angella Ahn are constantly redefining the art and architecture of chamber music.

Dr. Darria Long leverages the best of science to make lives healthier, better and easier.

Tara Winkler helps vulnerable children escape poverty and be cared for within their families.

Terry Moore is the director of the Radius Foundation, a forum for exploring and gaining insight from different worldviews.

John Doerr is an engineer, acclaimed venture capitalist and the chairman of Kleiner Perkins.

Drew Philp is the author of "A $500 House in Detroit: Rebuilding an Abandoned Home and an American City," a memoir of rebuilding a former abandoned home while finding his place in his city, country, race and generation.

Sharon Terry is developing ways for ordinary people to transform biomedical research and healthcare.

Drew Curtis is the founder and administrator of Fark.com.

The daughter of Dr. Martin Luther King Jr., Dr. Bernice Albertine King is a connector, communicator, community builder and CEO of The King Center.

To showcase vital new art from African nations and the diaspora, Touria El Glaoui founded the powerhouse 1-54 Contemporary African Art Fair.

Ursula von der Leyen believes that green and digital transformations hold the key to Europe's future prosperity and resilience.

Dr. Hawa Abdi and her daughters, Dr. Deqo Mohamed and Dr. Amina Mohamed, treat Somali refugee women and children, often for free.

Daria van den Bercken has played piano with major Dutch orchestras, and performed many a recital in her country’s famed concert halls. But her larger vision is to bring classical music to the masses.

Jamil Abu-Wardeh believes in the community-building power of a shared laugh -- especially in Arabic. He jumpstarted the Dubai standup comedy scene and produced the Axis of Evil Middle East Comedy Tour.

A founding member of the Axis of Evil Comedy Tour, Iranian-American comedian Maz Jobrani is now touring with his second solo comedy show, Browner and Friendlier.

Sauti Sol blends warm resonant pop with traditional Kenyan influences. Their mélange of energetic rhythms has promoted the group to become one of Africa’s most celebrated.

Dr. Phillip Atiba Goff works with police departments to help public safety be more equitable and less deadly.

Naomi McDougall Jones is a vocal advocate and activist for bringing gender parity to film, both on and off screen.

With his membership platform Patreon, YouTube star Jack Conte may have solved a perennial problem of content creators -- getting paid for digital media.

Judith Jamison uses dance as a medium for honoring the past, celebrating the present and fearlessly reaching into the future.

Tali Sharot studies why our brains are biased toward optimism.

Rogier van der Heide creates architectural spaces with light.

Birder and ecologist Washington Wachira started the Youth Conservation Awareness Programme to nurture young environmental enthusiasts in Kenya.

Musician Emily King is living proof that if you want to change your mind (and your art), the best thing you can do is change your scenery.

Natalie Merchant's career spans three decades -- as the leader of 10,000 Maniacs and in her own solo work -- of making warmly personal music.