AFP: Maya Khodave normally spends her days rummaging through rubbish dumps in a crowded Indian city but this week she is in China to offer herself as part of the solution to tackling global warming. Dressed in a colourful sari, the slightly built 23-year-old has dazzled amid a wall of dark-suited negotiators at United Nations climate change talks while trying to raise awareness about the value of waste pickers around the world. "We play a very important role in the environment, yet …