Guardian: In a few weeks, world leaders will gather in Paris in an attempt to reach a deal that will have critical implications for our species. At the COP21 climate talks, they will try to find a formula for reducing the worlds carbon emissions and give humanity an evens chance of holding global warming to a 2C rise above pre-industrial levels.
Past efforts to negotiate such deals have been riddled with frustration and failures, in particular the 2009 climate talks in Copenhagen, which ended in disarray....