The WSF is that space for debate and world leaders should be listening,??? says Katia Maia, from Oxfam International in Brazil.This year???s WSF is being held in the Brazilian city of Belem, one of the main doors to the Amazonia, which puts the focus very strongly on issues such as biodiversity, indigenous peoples and climate change, among others.Oxfam??s main role at this year???s Forum is workin