Worries about the rapid disappearance of the world's wetlands and its potential effect on global warming tops the agenda of 700 world experts who meet starting Monday in Cuiaba, Brazil, according to DPA. The United Nations University and Brazil's Federal University of Mato Grosso (UFMT), which co-organized the event, chose to meet on the edge of South America's Pantanal, said to be the world's largest wetlands, to make their point. The meeting concludes Friday.