Megacities

Mexico City (1x6)

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To Mother Nature, Mexico City is one big target. On one side: one of the world's most earthquake-prone hotspots. On the other: one of the world's most active volcanoes. And beneath their feet - a shaky foundation of landfill. From subways to freeways, this episode examines how Mexico City is harnessing cutting-edge technology to build in safety.