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The Arguments
Image from National Aeronautics and Space Administration, USA
Those who think global warming is a natural process point to the fact that in the last 10,000 years, the warmest periods have happened well before humans started to produce large amounts of carbon dioxide.
A detailed look at recent climate change reveals that the temperature rose prior to 1940 but unexpectedly dropped in the post-war economic boom, when carbon dioxide emissions rose dramatically.
