World

by Myles Little

by Tessa Berenson Rogers

by Noah Rayman

by Nikhil Kumar

by Hannah Beech

by Vivienne Walt

by Kay Armin Serjoie

by Newsha Tavakolian

by Francesca Trianni and Diane Tsai

by Fortune / Geoffrey Smith

by Eliana Dockterman

by TIME Staff

by Ian Bremmer

by Ben Goldberger

by Eliza Gray