ScienceDaily: Achieving a global climate agreement soon could be crucial for the objective to keep global mean temperature rise below 2 degrees Celsius. The challenges of meeting the long-term target will otherwise increase drastically both in terms of the required emissions reductions and economic impacts. This is shown by the first comprehensive multi-model-based assessment of so-called Durban Platform scenarios, conducted by a team of international scientists led by the Potsdam Institute for Climate Impact...