Focus: Climate Change Countdown

The countdown is on to reach a legally binding agreement between all nations on actions to mitigate climate change. In 2011, the United Nations Climate Change Conference agreed that such a deal will be in place by 2015, and implemented by 2020. In this joint web Focus, timed to coincide with the New York Climate Summit, Nature Geoscience and Nature Climate Change present a series of overview articles and opinion pieces that take stock of emissions and climate change uncertainties and discuss potential ways forward.