Why Are All Major U.S. Cities Sinking?

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Across the U.S. and around the world, major cities are slowly sinking. This phenomenon—called land subsidence—is driven by groundwater overuse, rapid urban development and is intensified by climate change. In this segment, experts Tom Parsons and Pietro Teatini break down what’s causing the ground to drop, why it’s happening faster in some places than others, and what can be done to slow or manage the damage before it’s too late.