http://news.bbc.co.uk/2/hi/americas/7977263.stm By James Painter
BBC Latin America analyst
Climate change experts in North and South America are increasingly worried by the potentially devastating implications of higher estimates for possible sea level rises.
The Americas have until now been seen as less vulnerable than other parts of the world like low-lying Pacific islands, Vietnam or Bangladesh.
But the increase in the ranges for anticipated sea level rises presented at a meeting of scientists in Copenhagen in March has alarmed observers in the region.
Parts of the Caribbean, Mexico and Ecuador are seen as most at risk. New York City and southern parts of Florida are also thought to be particularly vulnerable.