As nations push for more ambition at climate talks, chairman says they may get it

BELEM, Brazil -- Going into United Nations climate negotiations , the Brazilian hosts weren’t looking for big end-of-session pronouncements on lofty goals. This conference was supposed to hyperfocus on “implementation” of past promises not yet kept . Throw that out the window. The urgency of climate change is causing some negotiators to push for more big-picture action — on weak plans to cut emissions of heat-trapping gases, on too little money to help nations wracked by climate change, on putting teeth into phasing out coal, oil and gas. Because of that pressure to do more — including from Brazil President Luiz Inácio Lula da Silva — the diplomat chairing the talks said Saturday he'll consider a big-picture, end-of-negotiations communiqué, sometimes known as a decision or cover text. “I t