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PBS News Hour
Why some of the most populous cities in the U.S. are sinking
According to a recent study published in the journal Nature Cities, 28 of the most populous U.S. cities are sinking. It’s due to a phenomenon called land subsidence, exacerbated in many cases by humans extracting too much groundwater from underground aquifers. Ali Rogin speaks with Grist senior writer Matt Simon to learn more.
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