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

BELEM, Brazil (AP) — 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 [...]