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 ...

The map shows the location of the 307 rural areas analyzed in the study. The reported populations in the graphic were found to be underestimated by between 53 and 84%. Credit: Josias Láng-Ritter et.

The world’s population is expected to grow by more than 2 billion people in the next decades and peak in the 2080s at around 10.3 billion, a new report by the United Nations said Thursday. The report ...