Technology

by Noah Giansiracusa

by Belinda Luscombe

by TIME Staff

by Scott Nover

by Vinod Khosla

by Arianna Huffington

by Victoria Livingstone

by John Hope Bryant

by Tim Shriver

by Dan Hendrycks

by Daniel Lyons

by Nancy Gibbs

by Brian Kateman

by James P. Steyer

by Otto Barten and Joep Meindertsma