Every year over 30 million tourists come to Venice Italy to see the palaces along the Grand Canal. Built on 10 million posts driven into the mud Venice seems to float upon the water. Now industrialization and motorboat traffic is putting 1000 years of history and innovation in jeopardy.

New York City has been described as the cultural and financial capital of the world. Located where the Hudson River meets the Atlantic climate change a growing population and an archaic drainage system can combine into a disaster as half a million New Yorkers live in a catastrophic flood zone.