In Hans Rosling’s hands, data sings. Global trends in health and economics come to vivid life. And the big picture of global development -- with some surprisingly good news -- snaps into sharp focus.

Ola Rosling is the director and co-founder of the Gapminder Foundation. Previously, he was the Google Public Data product manager.

Anna Rosling Rönnlund's personal mission: to make it easy for anyone to understand the world visually.

With TED-Ed communicator Emilie Soffe as the leading lady, the TED staff puts on a show.

JK Rowling penned the bestselling Harry Potter page-turners -- a spellbinding, seven-installment fantasy of wizards, warlocks and decidedly British texture that brought her from rags to riches.

Lili Haydn brings fresh energy and a collaborative spirit to the violin.

Amanda Little is a professor of journalism and science writing at Vanderbilt University.

Georgette Mulheir is a pioneer for the movement to end child abuse in the form of orphanages.

Amber Galloway-Gallego is a world-renowned ASL interpreter specializing in music.

Kathryn Schulz is a staff writer for the New Yorker and is the author of "Being Wrong: Adventures in the Margin of Error."

A self-proclaimed nature nerd, Janine Benyus' concept of biomimicry has galvanized scientists, architects, designers and engineers into exploring new ways in which nature's successes can inspire humanity.

Tristan Harris helps the technology industry more consciously and ethically shape the human spirit and human potential.

Sam Harris's work focuses on how our growing understanding of ourselves and the world is changing our sense of how we should live.

Award-winning journalist and author, Will Potter focuses on the animal rights and environmental movements, and civil liberties in the post-9/11 era.

Van Jones is the CEO of REFORM Alliance and a CNN political commentator.

Dr. Chris Nowinski is leading a global conversation on concussions, CTE and the future of sports.

Darren Walker is a leader in the nonprofit and philanthropic sectors.