Hod Lipson works at the intersection of engineering and biology, studying robots and the way they "behave" and evolve. His work has exciting implications for design and manufacturing -- and serves as a window to understand our own behavior and evolution.
Physician Seyi Oyesola co-developed the "Hospital in a Box" -- a pop-up, portable, solar-powered OR for off-grid medicine in Africa and elsewhere. But, he says, Africa needs more than new tools to heal itself.
Jacqueline Novogratz works to enable human flourishing. Her organization, Acumen, invests in people, companies and ideas that see capital and networks as means, not ends, to solving the toughest issues of poverty.
David Macaulay gets under the skins of skyscrapers, mosques, pyramids, subways, and a host of other ancient and modern marvels. His lavish and micro-detailed renderings expose the world's secret engineering to dazzled readers of all ages.
Yochai Benkler has been called "the leading intellectual of the information age." He proposes that volunteer-based projects such as Wikipedia and Linux are the next stage of human organization and economic production.