Biologist Mario Moscatelli gestures towards garbage that litters areas of the recovering Gramacho mangrove forest near the Guanabara Bay where he and workers of the Jardim Gramacho landfill, which was the site of one of the world's largest garbage dumps, planted red mangrove seedlings to mark International Mangrove Day, in Duque de Caxias, near Rio de Janeiro, Brazil, July 26, 2021. REUTERS/Lucas Landau