NEW YORK—Immigration has emerged as a key campaign issue in the elections in Great Britain, the United States, ...

Uncontrolled migration—spurred by a growing populations, fewer resources like water or arable land as well as increasing conflict—has ...

Most governments must juggle budgets and confront the fact that the world has fewer people of working age ...

UN sustainability goals should not overlook population growth centered in the poor, least developed countries.

So much attention is focused on the Russian Federation's plummeting ruble, evaporating investments, and looming recession, following its ...

The drowning of hundreds of men, women, and children off the coasts of Italy and Malta has brought ...