Fang Ruan is co-lead of the BCG Henderson Institute in China and a regional leader of the People and Organization practice in Asia-Pacific based in BCG's Hong Kong office.

As editor in chief at Mashable, Adam Ostrow covers the tech, trends and people driving the evolution of the Web.

Zahra' Langhi is the cofounder of Libyan Women’s Platform for Peace (LWPP), a movement advocating for women’s socio-political empowerment and peace-building.

Through his William J. Clinton Foundation, former US President Bill Clinton has become a vital and innovative force for world change. He works in four critical areas: health, economic empowerment, citizen service, and reconciliation.

Dr. Brené Brown studies courage, vulnerability, shame and empathy.

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

Mike Velings understands the potential for business to create durable solutions to complex world problems.

TED Fellow Larry Irvin is the chief executive officer for Brothers Empowered to Teach (BE2T), where he ensures the overall vision and culture for BE2T and is the chief fundraiser.

Helen Walters is the head of curation at TED, where she has the privilege of overseeing the work of an absurdly talented group of specialist curators and deep thinkers to bring the very sharpest minds and ideas to the TED stage.

David Burkus challenges the traditional and widely accepted principles of business management.

Dolores Huerta is inspired by a passion to spend most of her time pursuing social justice and civil rights.

Amanda Williams blurs the distinction between art and architecture through works that employ color as a way to draw attention to the political complexities of race, place and value in cities.

Nabiha Saklayen is the CEO and cofounder of Cellino, where she works to make personalized cell therapies accessible for all.

Devdutt Pattanaik looks at business and modern life through the lens of mythology.

Nili Gilbert focuses on socially aware portfolio decarbonization and bringing science into finance.

Pat Mitchell is a lifelong advocate for women and girls.

Kola Masha is the founder of Babban Gona, the first for-profit social enterprise in history to be awarded the prestigious Skoll Award, due to its financial sustainability and highly scalable impact. The organization is part-owned by the farmers they serve.

Samy Nour Younes is a trans actor and activist who highlights the diversity of the trans experience -- not just in their struggles, but also in their triumphs.

Tim Jackson is a British ecological economist and professor for sustainable development at the University of Surrey. He is the author of "Prosperity without Growth" and director of the Centre for the Understanding of Sustainable Prosperity.

Kavita Ramdas directs the Global Fund for Women, the largest foundation in the world supporting women's human rights across all borders.

Chetna Gala Sinha is the founder and chair of the Mann Deshi Bank, aimed at the needs of rural women micro-entrepreneurs in India.

With an eye for nature’s forms and lessons learned from its materials, Jeanne Gang creates iconic environments that stand in curvy relief to blocky urban cityscapes.

Heidi M. Sosik is an ocean scientist who uses tools like lasers and robotic cameras to figure out how tiny organisms in the ocean affect our whole planet.

David Whyte writes at the intersection of interior and exterior worlds, what he calls the conversational nature of reality, bringing new territory into view with his distinctly personal style.

Maajid Nawaz works to promote conversation, tolerance and democracy in Muslim and non-Muslim communities.

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

Sebastien de Halleux is a technology entrepreneur with a lifelong passion for building impactful businesses.

Eric Garcetti is a fourth-generation Angeleno and the 42nd Mayor of Los Angeles.

Tina Seelig teaches innovation and entrepreneurship and is passionate about creative problem-solving.

Dr. Kakenya Ntaiya is the founder and president of Kakenya's Dream, an international nonprofit organization leveraging education to empower girls, end harmful traditional practices and transform communities in rural Kenya.