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Geography

Why Population Density Varies Between Mountain and Coastal Regions

Quick fact

Over 40% of the world's population lives within 100 km of a coastline, even though coastlines make up only about 20% of Earth's land area.

Why this is interesting

Why do most of the world's major cities hug coastlines, while mountain ranges remain sparsely populated? The answer lies in a mix of geography, climate, and economics.