Six million antelope move across South Sudan in a spectacle larger than the Serengeti but threatened by war and poaching.

Welcome to the first column of Birdbrained Science! In this biweekly column, I’ll be talking about a variety of scientific topics — bird-related, brain-related and otherwise.

A third important driver of trends has been a change in the global destinations to which Africans now migrate. As ...

Across the world, a backlash to immigration is remaking politics. In election after election, voters have backed candidates who promise to do whatever is necessary to stop the flow of unauthorized ...

Migration is the powder keg of our angry age. Disquiet over influxes of asylum seekers has animated nationalists and nativists on both sides of the Atlantic. An ascendant strain of right-wing politics ...

Thousands of migrants, primarily from Venezuela, have reportedly reversed their journey toward the U.S. following the reinstatement of strict policies by President Donald Trump. Colombia, Panama, and ...