World seeing sobering signs of climate change 's accelerating impacts , say politicians . Comment: U.N. action on climate change will only be credible if backed up by national legislation , they say . `` The fate of our planet depend on our actions , '' they write .
World seeing sobering signs of climate change 's accelerating impacts , say politicians . But they argue that national legislation to limit emissions is advancing . U.N. action on climate change will only be credible if backed up by national legislation , they say . `` The fate of our planet depend on our actions , '' they write .