"Mexico: a sinking city on a swamp" (Documentary)

Dispatches

First the Spanish vanquished the Aztecs, then built on top of their destroyed capitol. When they outgrew the island, they drained the lake around it and built more - a lot more. Mexico City's been sinking in the clay since then and now rivals Pisa. But, Myles Estey reports on an attempt to stem the decline, using water.

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