Economist warns of 'radical' climate change, millions at risk - FRANCE 24: "Without changes to emission trends, the planet has roughly a 50 percent chance that temperatures will soar to five degrees Celsius (nine degrees Fahrenheit) above pre-industrial averages in a century, he said.
"We haven't been above five degrees Centigrade on this planet for about 30 million years. So you can see that this is radical change way outside human experience," Stern said in an address at the International Monetary Fund."
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