"Floating cities for environmental refugees"

http://www.youtube.com/watch?v=GuFrn2PTKCU

People displaced due to sea level rise will have a safe place to live once the Lily Pad floating cities are constructed. I believe they should be constructed on the sea floor and then floated to the surface of the water once construction is completed.

These cities would be far more ecologically benign than current cities of today. Because of the distances involved in transporting our food from farms hundreds or thousands of miles away, every calorie of food we eat requires 10 calories of OIL (ref http://www.youtube.com/watch?v=NmRoc7_jVdo... ). Residents of floating cities will grow their own food, farm their own fish and recycle all their waste in an environmentally sustainable way. In addition to the solar panels and wind turbines that surround the city, the waste could be turned into fertilizer and methane to provide electricity.

But won't it take forever to construct these cities??? Let's take an example of a custom house which takes 3 months to 6 months or even more to complete construction. But here's a robot that can do it in a single day, really it's more like a giant 3D printer: (ref http://www.youtube.com/watch?v=31jkjsZPjtQ ). It can use many different materials so it should be just a matter of experimentation to see which material works best under the ocean.

Floating cities will provide those most harmed by our stupidity and short sighted burning of fossil fuels with a second chance at life. They should be paid for with a tax on fossil fuel sales (Coal, Oil, Natural Gas) commensurate with their impact on global climate change.