Sofia Llocclla Pellaca always descends on foot from the unlit hill where she lives with hardly any electricity on the outskirts of Lima. She rarely eats meat and cooks on a gas or wood stove. She has never even heard of a carbon footprint. While some climate-conscious people in rich countries try to restrict their carbon emissions, Pellaca's minimal impact on the environment is an unhappy side-effect of poverty. IMAGES AND SOUNDBITES