Nic Marks gathers evidence about what makes us happy, and uses it to promote policy that puts the well-being of people and the planet first. He's the founder of the Centre for Well-Being at the UK think tank New Economics Foundation (NEF).

Sophie Howe safeguards the interests and well-being of the future generations of Wales.

Ashley Whillans investigates how intangible incentives affect employee motivation and well-being.

Ellen Agler is passionate about improving the health and well-being of the most vulnerable members of our human family.

Christina Costa teaches psychology to undergraduate and high school students and studies well-being and resilience.

Keith Payne studies how inequality shapes the human mind.

Jennifer Aaker is a behavioral scientist focused on understanding what creates meaning vs. happiness in life.

Elise Roy thinks that designers have the capacity and responsibility to address and resolve human problems on micro and macro scales and contribute to social well-being.

Halla Tómasdóttir is CEO of The B Team, a group of global business and civil society leaders driving a better way of doing business for the well-being of people and the planet.

Engaging scientific knowledge, Nancy N. Chen examines the intersections of medicine, political economy and social inequality.

B. N. Horowitz, MD is a cardiologist and visiting professor at Harvard University's department of human evolutionary biology who turns to the natural world for insights into human well being.

Jaap de Roode studies the ecology and evolution of parasites, focusing on those that attack the monarch butterfly.

Olivia Affuso's mission is to inspire women and girls to live active, balanced lives.

Jamie Drummond co-founded the advocacy organization ONE, whose central themes are ending extreme poverty and fighting the AIDS pandemic.

TED Fellow Adetayo Bamiduro is a motorcycle financing entrepreneur.

Laura Carstensen is the director of the Stanford Center on Longevity, and has extensively studied the effects on wellbeing of extended lifetimes.

As co-founder and CEO of MASS Design Group, Michael Murphy envisions and creates community-centric structures with healing built into their core.

Yvonne van Amerongen is an occupational therapist and a social worker.

Murray Gell-Mann brings visibility to a crucial aspect of our existence that we can't actually see: elemental particles. He won the Nobel Prize in Physics for introducing quarks, one of two fundamental ingredients for all matter in the universe.

Jill Farrant is leading the development of drought-tolerant crops to nourish populations in arid climates.

A legendary oil and gas entrepreneur, T. Boone Pickens is now on a mission to enhance U.S. energy policies to lessen the nation’s dependence on OPEC oil.

Robert Waldinger is the director of the Harvard Study of Adult Development, one of the most comprehensive longitudinal studies in history.

Jessica Green wants people to understand the important role microbes play in every facet of our lives: climate change, building ecosystems, human health, even roller derby -- using nontraditional tools like art, animation and film to help people visualize the invisible world.

Nancy Etcoff is part of a new vanguard of cognitive researchers asking: What makes us happy? Why do we like beautiful things? And how on earth did we evolve that way?

Carl June is a renowned pioneer in the fight against cancer.

Chad Frischmann is working to get humanity to "drawdown," the point in time when the concentration of atmospheric greenhouse gases begins to decline on a year-to-year basis.

Anna Piperal is a branding expert and digital enthusiast who strives to spread the idea of a "zero-bureaucracy" government ecosystem.

Thomas Curran studies the personality characteristic of perfectionism, how it develops and its impact on mental health.

Wendy De La Rosa uses behavioral science to help people make better financial decisions.

By building psychosocial care into the primary health care system in Afghanistan, Inge Missmahl offers hope to a society traumatized by decades of conflict and insecurity.