Facing climate emergency, UN summit staggers on

A UN climate summit in Madrid was on life support Saturday after marathon negotiations between countries left them more divided than ever over on how to fight global warming and pay for its ravages.Diplomats from rich nations, emerging giants and the world's poorest countries -- each for their own reasons -- found fault with a draft agreement put forward by host Chile in a botched attempt to strike common ground.Faced with fire-alarm warnings from science, deadly extreme weather made worse by cl