This chart shows the cities with the most inhabitants in the world.

A new CAPMAS report projects Egypt will rise two places in the global population rankings over the next 25 years.

Machine learning maps suggest that about 180 to 220 million people may rely on untreated groundwater with manganese above the ...

Note: Map shows the area with a shake intensity of 3 or greater, which U.S.G.S. defines as “weak,” though the earthquake may be felt outside the areas shown. All times on the map are Central time. The ...