As heads of state from David Cameron to Barack Obama meet in New York for a UN climate summit hosted by Ban Ki-moon, expectations are high for bold commitments on cutting greenhouse gas emissions. Use this interactive, in-depth map to find out who the big polluters are internationally, how China’s emissions have grown stratospherically and see who is most vulnerable to global warming’s impacts. Turn your sound up to hear the introduction to the map

• Live blog: Tuesday’s developments at UN climate summit

• At the climate talks - in pictures

