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SUN, 1 NOV · 83 ITEMS
"Subsidence threatens many of the world's largest cities" — Scientific American · Science & Medicine
Land — the gradual sinking of the Earth's surface — is endangering many of the world's largest cities, especially coastal and deltaic ones. Driven primarily by excessive , it exacerbates flood risks and compounds the effects of sea-level rise, threatening infrastructure and millions of residents. Recent global analyses, including a 2026 study in 'Nature Cities' and work by the UN University, quantify the scale of the problem across hundreds of cities.
The claim is well-supported by multiple recent peer-reviewed studies, including a 2025 Nature paper on U.S. cities and a 2026 Nature Cities global analysis, but the specific Scientific American report is a secondary summary with no primary citation provided. The search results confirm robust evidence, making the core assertion solid, though precise city-level details depend on the underlying studies.
The Scientific American article and several of the corroborating studies date from 2025–2026, so the coverage reflects genuinely new research findings on the scale of the threat.