By Oliver Bazely, Contributing Reporter
RIO DE JANEIRO, BRAZIL - Close to the international airport, a few kilometers outside the center of Rio, lies a large landfill known as Jardim Gramacho. Since 1978, this patch of shoreline has been the final destination for much of Rio's garbage, but perhaps not for much longer.
Several years ago, COMLURB (Companhia Municipal de Limpeza Urbana) - the authority in charge of the site - noticed large cracks appearing in the land around the dump, a sign that the landfill's capacity was being exceeded . . .