University of California professor Andrew Guzman: Death toll for global warming ‘perhaps billions’
Guzman 'A seemingly modest increase in temperature of a couple of degrees is enough to make the seas rise, food production collapse, nations go to war, and disease spread virtually unchecked. It was becoming clear, in a way that I felt was not widely appreciated, that the consequences of these changes will be measured in the hundreds of millions of lives, if we are lucky. If we are unlucky, perhaps billions'
