Global Warming isn’t just happening now?it’s happened in the past, as well. Is there anything we can learn from those times that will help us today?
In New Scientist, Fred Pearce writes, “It was the biggest climate event of the last 10,000 years and caused the most dramatic change in the weather since humans began farming. And it may yet hold important lessons about climate change in the 21st century.”
He’s referring to the fact that ice cores have revealed that 8,000 years ago, a huge glacier in Canada melted, spilling huge amounts of fresh water into the North Atlantic, which shut down the Gulf Stream and cooled parts of the northern hemisphere for more than a hundred years. The same thing is happending to the Gulf Stream today.