Climate Scientist: 2 Degrees of Warming Too Much

Famed climate scientist James Hansen and colleagues from a diverse array of disciplines, including economist Jeffrey Sachs, make the case that warming needs to be kept below the widely cited figure of 2 degrees Celsius, by means of a carbon tax.



via LiveScience.com http://www.livescience.com/41690-2-degrees-of-warming-too-much.html