Rich must pay bulk of climate change bill: Oxfam By Jeremy Lovell 37 minutes ago Coping with the ravages of global warming will cost $50 billion a year, and the rich nations who caused most of the pollution must pay most of the bill, aid agency Oxfam said on Tuesday. The call, barely 10 days before a crucial Group of Eight (G8) summit in Germany which has climate change at its core, is likely to make already tense negotiations even tougher. The United States, which Oxfam says must foot 44 percent of the annual $50 billion bill, is rejecting attempts...