Hundreds of decisions—how to build roads, where to send medicine, how to plan for natural disasters—depend on knowing where people live. Over the past few decades, population maps have become powerful ...

For decades, the world’s dominant powers have benefited from large working-age populations that help drive economic growth. Meanwhile, particularly young populations in much of the developing world ...

While Christians remained the world’s largest religious group at the end of the decade that ended in 2020, Christianity’s growth did not keep up with global population increase. But Islam — the ...