Over the last century, humans have warmed the earth by 0.9 degrees Celsius by way of industrial expansion. Ahead of the Paris talks that begin?Monday, the United Nations has projected that collectively we only have the willpower to cap further global warming at 2.7 degrees Celsius by 2100 ? but according to a benchmark arrived at by compromise between scientists and policymakers, we could trigger dangerous?positive feedback warming if we exceed two degrees Celsius. Read More at www.news.vice.com