The realistic prescription, from the UN and research institutes, is that global emissions need to peak between 2015 and ’17.
Historians, assuming sufficient social stability for dispassionate analysis a half-century from now, will search for reasons for our collective failure during the critical twenty-year period, 1992 – 2012. They will conclude that human technology outpaced human institutional capacity for rational decision-making. National leaders responded, as constitutionally and politically obliged, to national interest. More