I won't debate that there are environmental issues to be faced, however some things are hard to bite into. For instance:
It found that an estimated 70 percent of the world's tropical coasts have been developed and projected that 90 percent would be developed by the year 2030.
I find this hard to believe.
If the UN wants to pass 'international legislation' to ban development, keep it in the 3rd world dumps. They do not govern the United States.
I find this hard to believe. I wouldn't mind seeing how the numbers were processed, but I wouldn't be surprised that tropical coasts are significantly developed -- they are popular places! Case in point:
Seven Mile Beach, Grand Cayman
Map of Seven Mile Beach, Grand Cayman:
Map of resorts on Phuket Island, Thailand (made famous by the tsumami):