Global: Africa looks to vast forests for carbon credit

They inhabit a polluted part of Ivory Coast's main city with few jobs and a swelling population, but residents of Abidjan's slums have a rare respite: a stretch of pristine rainforest. From their wooden shacks and unpainted concrete houses by motorways on the edge of Banco National Park, the millions who live in north Abidjan need no lesson on its worth. "This forest is a great thing," said textile worker Sebastien Coulibaly, 35, in front of the sky-scraping green mass of vines and broccoli-shaped trees.