Agence France-Presse: Ignored, marginalised or despised in many countries, wastepickers from Asia, Latin America and Africa have come together in Copenhagen to lobby for recognition as unsung heroes in the fight against climate change. An estimated 15 million people around the world survive by sifting through trash, rooting out plastic packaging, glass bottles, scrap metal, paper and other tossed-out goods that are then resold for recycling. In some places, the recycling rate reaches more than 80 …