Various: Governments from developing nations – particularly China and India – have been reluctant to establish firm goals on lowering CO2 emissions. But lawmakers from 17 Western Hemisphere nations will sign a pledge to cut emissions by half by 2050. The move sends a message to Latin governments that cutbacks are necessary, said one of the conference organisers. “I think that Latin America wants to be seen as a leader on this issue,” said Pamela Cox, the World Bank’s vice …