Warming

PHILADELPHIA, Pennsylvania – Michael Mann, a climate scientist and the director of the Center for Science, Sustainability & the Media at the University of Pennsylvania, has faced a barrage of attacks from oil, gas, and coal companies and climate change deniers. These attacks were prompted by Mann’s groundbreaking research, which included the creation of a graph known as the “hockey stick” graph. This graph illustrated the unprecedented rise in global temperatures and was incorporated into reports by the Intergovernmental Panel on Climate Change (IPCC). The disputes surrounding Mann’s research centered around the statistical analysis used … Read more