Dean Ornish is a clinical professor at UCSF and founder of the Preventive Medicine Research Institute. He's a leading expert on fighting illness -- particularly heart disease with dietary and lifestyle changes.
Sara Menker is founder and CEO of Gro Intelligence, a tech company that marries the application of machine learning with domain expertise and enables users to understand and predict global food and agriculture markets.
By educating young people about the difference between healthy and unhealthy relationships, Katie Hood hopes to derail abusive behavior before it starts and impact the relationship health of an entire generation.
Mark Tercek leads a team committed to tackling the world's biggest environmental challenges -- protecting land and water, addressing climate change, providing food and water sustainably, and building healthy cities.
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.
From building opera houses with wire to mapping the connection between the automobile and your mother-in-law, Jaime Lerner delights in discovering eccentric solutions to vexing urban problems. In the process he has transformed the face of cities worldwide.
TED Fellow Anab Jain imagines and builds future worlds we can experience in the present moment. By creating new ways of seeing, being and acting, she inspires and challenges us to look critically at the decisions and choices we make today.
Penny Chisholm studies an extremely tiny microorganism that plays an enormous role in ocean ecosystems. Discovered only three decades ago, it has defined her career and inspired her to think differently about life on Earth.