UNICEF Youth Advocate Nkosilathi Nyathi has been a climate change and environmental issues advocate since the age of 10.

Saki Mafundikwa wrote the book on Africa’s graphic design heritage -- then opened a school of graphic arts in his native Zimbabwe.

TED Fellow Francisca Mutapi advocates for locally led solutions to eliminate preventable and treatable infectious diseases.

Moreangels Mbizah is the founder of Wildlife Conservation Action, an organization dedicated to conserving biodiversity, promoting human-wildlife coexistence and empowering local communities.

Tawanda Kanhema puts cities on the map with the goal of improving digital inclusion by accelerating the distribution of technology solutions in places where they are most needed.

Mary Bassett is fighting what may be the greatest stumbling block to equitable health care in the US: institutional racism.

Dixon Chibanda is passionate about the human brain, how it influences our behavior and what we can do to make everybody happy.

Allan Savory works to promote holistic management in the grasslands of the world.

Janine di Giovanni reports from war zones around the world.

Srdja Popovic was a founder and leader of the student movement that brought down the Milosovic regime. Now, he helps other nonviolent movements learn and grow.

Sethembile Msezane deconstructs the act of public commemoration -- how it creates myths, constructs histories, includes some and excludes others.

Filmmaker + scientist

Pan African educator

Mobile health entrepreneur