March 8, 2013
(CNN) -- Global warming has propelled Earth's climate from one of its coldest decades since the last ice age to one of its hottest -- in just one century. A heat spike like this has never happened before, at least not in the last 11,300 years, said climatologist Shaun Marcott, who worked on a new study on global temperatures going back that far.
"If any period in time had a sustained temperature change similar to what we have today, we would have certainly seen that in our record," he said. It is a good indicator of just how fast man-made climate change has progressed.
A century is a very short period of time for such a spike. Read entire article