This computer generated image released by Dymaxion Studio shows a model of Bang Khunthein Gerlatric Hospital in Bangkok, Thailand. Concrete stilts will raise its first floor about 4 meters (13 feet) above average water levels. AP Photo/Dymaxion Studio
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A man fishes in the Chao Phraya River in Bangkok, Thailand. The Thai capital is among the mega coastal cities projected by the end of this century to lie totally or partially under water. AP Photo/Sakchai Lalit
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Residences sit along the Chao Phraya River in front of a construction site, in Bangkok, Thailand. The Thai capital is among the mega coastal cities projected by the end of this century to lie totally or partially under water. AP Photo/Sakchai Lalit
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Birds fly above floating homes on the River Maas in Maasbommel, Netherlands. AP Photo/Bas Czerwinski
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Boats float near amphibious homes, left, on the River Maas in Maasbommel, Netherlands. AP Photo/Bas Czerwinski
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Amphibious homes are seen on the River Maas in Maasbommel, Netherlands. AP Photo/Bas Czerwinski
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Amphibious homes float on the harbour in the IJburg neighborhood in Amsterdam. AP Photo/Margriet Faber
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A boat floats between amphibious houses in the harbour of the IJburg neighborhood, in Amsterdam. AP Photo/Margriet Faber
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Amphibious houses float on the harbour in the IJburg neighborhood in Amsterdam. AP Photo/Margriet Faber
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Amphibious houses seen in the harbour of the IJburg neighborhood in Amsterdam. IJburg is a new district in the eastern part of town completely surrounded by water. One third of Netherlands below sea level. AP Photo/Margriet Faber
