Agence France-Presse: The Group of Eight nations meeting in Italy must take the lead in the fight against global warming or endanger hundreds of millions of people worldwide, the British charity Oxfam said Wednesday. “We have reached a crossroads, and rich countries get to choose the route we all take,” said Antonio Hill, a senior policy advisor for Oxfam. “One route leads us out of today?s economic and climate crises and towards a low carbon future; the other spells disaster for hundreds of …