World

by Charlotte Alter, Suyin Haynes and Justin Worland

by Edward Felsenthal

by Elliot Ackerman

by Simon Shuster

by Amy Gunia

by Esther Duflo and Abhijit V. Banerjee

by Billy Perrigo

by Ciara Nugent, Josiah Bates, Jasmine Aguilera and Madeleine Carlisle

by Billy Perrigo

by Amy Gunia

by Hillary Leung

by Laignee Barron and Amy Gunia

by Madeleine Carlisle

by Ian Bremmer

by Rachael Bunyan