Former U.S. Secretary of Energy gives climate talk at UW-Madison
Throughout the modern age, the world has experienced explosive population growth — a number that will continue to grow larger and faster. Other metrics have consequently seen explosions of their own. Agricultural science and policy have pushed crop yields to all time highs; the amount of energy produced and consumed in the past 70 years nearly doubles that of the previous 11,000 years; and, as a result, humanity has created enough of a footprint from released pollutants and greenhouse-gasses for scientists to consider marking a new geological epoch.