Mexico City 's huge , infamous Bordo Poniente landfill site was receiving 12,600 tons of waste a day -- one and a quarter times the weight of the Eiffel Tower -- before it was shut down in December last year . New bartering scheme in Mexico City helping residents exchange trash for fresh food . The Mercado de Trueque encourages people to recycle paper , glass and plastic . Score: 7
New bartering scheme in Mexico City helping residents exchange trash for fresh food . The Mercado de Trueque encourages people to recycle paper , glass and plastic . Score: 7