Isaac Lidsky has a very eclectic resume.

Joshua Foer is a science writer who 'accidentally' won the U.S. Memory Championship.

Brimming with insights gained on her picaresque journey from firefighter to best-selling author, Caroline Paul’s "The Gutsy Girl: Escapades for Your Life of Epic Adventure" is a revolutionary guide for raising brave young women.

Ameera Harouda leads journalists to the harrowing (and often hidden) stories of the Gaza Strip that they couldn’t find on their own.

Aala El-Khani explores the needs of families affected by war and displacement and develops resources that support the mental health of children and their caregivers to promote current and future wellbeing.

Lauren Pharr promotes the role of vultures in forensic science.

In her performances she’s been cut, burned, and nearly shot -- but Marina Abramović's boldest work yet is a gargantuan institute dedicated to transformation through art.

Bringing cross-disciplinary tactics and innovation to a moribund defense industry, N Square’s Erika Gregory seeks to wean the world from its nuclear stockpiles.

UNICEF executive director Henrietta Fore is a champion of economic development, education, health and humanitarian assistance.

Frances Frei is a professor of technology and operations management at the Harvard Business School.

Hannah Fry researches the trends in our civilization and ways we can forecast its future.

Vera Songwe is the UN Under-Secretary General and the executive secretary of the Economic Commission for Africa.

Lucy Farey-Jones is obsessed with what makes people embrace or reject new things.

Fiction writer Karen Thompson Walker explores the connection between fear and the imagination.

Jia Jiang's journey through rejection revealed a world hidden in plain sight, where people are much kinder than we imagine.

Patrick J. McGinnis is a venture capitalist, writer and speaker.

A record-setting triathlete, Minda Dentler is a polio survivor committed to inspiring people to move beyond their fear of failure and achieve their goals.

Art historian and critic Sarah Lewis celebrates creativity and shows how it can lead us through fear and failure to ultimate success.

David Pizarro is a psychologist interested in how certain emotions (disgust, fear, anger) affect our moral judgment.

Richard Baraniuk founded Connexions -- now called OpenStax -- a free, open-source, global clearinghouse of course materials. Students and educators tap into its vast store of texts on everything from engineering to ornithology to music, adapting the content as they see fit.

Abigail Marsh asks essential questions: If humans are evil, why do we sometimes go to extraordinary lengths to help others even at a cost to ourselves?

Bob Woodward is an investigative reporter and an associate editor at The Washington Post, where he has worked since 1971.

Luisa Neubauer is a climate activist, author and co-organizer of the "Fridays For Future" climate strike movement.

Okong'o Kinyanjui helps queer Africans mobilize, share resources and build meaningful connections with each other.

Through groundbreaking research and the lens of her own autism, Temple Grandin brings startling insight into two worlds.

Ali Noorani has traveled the world listening to the stories of migrants -- along with the stories of those who welcome them and those who fear them.

Beau Lotto seeks to pull aside the curtain of why we see what we do in order to create the possibility and agency in deciding what to perceive next.

Through his lab at the California Institute of Technology, David Anderson seeks to find the neural underpinnings of emotions like fear, anxiety and anger.

The author of "Eat, Pray, Love," Elizabeth Gilbert has thought long and hard about some big topics. Her fascinations: genius, creativity and how we get in our own way when it comes to both.

Brain researcher Jill Bolte Taylor studied her own stroke as it happened -- and has become a powerful voice for how we can choose to replace our stress, fear and anxiety with feelings of joy and deep inner peace.