While climate sceptics have systematically attacked anthropogenic warming, up until now they have only invoked giant natural fluctuations (GNFs). Helped by statistics, the GNF model can easily be scientifically rejected.

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While climate sceptics have systematically attacked anthropogenic warming, up until now they have only invoked giant natural fluctuations (GNFs). Helped by statistics, the GNF model can easily be scientifically rejected.