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By Mary Carroll, Contributing Reporter

RIO DE JANEIRO, BRAZIL - As the Rio+20 conference approaches, there is plenty of anticipation as to how Rio will handle the influx of approximately 50,000 visitors. Diplomats, businessmen, environmental activists, journalists and an estimated 150 heads of state have already booked most of the hotels, with another estimated 10,000 people camping, accommodation and transportation is set to brimming.

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