Telegraph: The Oxfam letter, signed by celebrities like Scarlett Johansson, comes as a new report warned poor women in developing countries will be disproportionately affected by climate change Photo: REUTERS The veteran naturalist Sir David Attenborough Photo: PA Representatives from almost 200 countries have gathered in Poland for the UN Climate Change Conference to decide the format for a successor to the Kyoto Protocol. The most contentious issue is whether richer countries will …