400 years after Hudson found New York harbor, Eric Sanderson shares how he made a 3D map of Mannahatta’s fascinating pre-city ecology of hills, rivers, wildlife — accurate down to the block — when Times Square was a wetland and you couldn’t get delivery. (Recorded at TEDGlobal, July 2009, Oxford, UK. Duration: 16:09)
Twitter URL: http://on.ted.com/3t
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