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 ...

A new study suggests the global population may be much higher than current estimates, as rural populations worldwide are likely undercounted. The UN estimates Earth’s population at 8.2 billion and ...

Almost every country in the world has seen fertility rates decline over the past few decades, but one region's birth rates are still so high that it is expected to provide more than half the global ...