Oh dear, yet more nonsense of the imagined dangers of rising CO₂, now described as a “beast”! (Carbon dioxide is a bigger beast than scientists thought, January 15).

Some new computer models show that rising CO₂ will cause dangerous warming. The problem for these alarmists is that in the past their models predicted far more warming than actually happened. If they had looked at the real world, they would see that over the past 550m years, where CO₂ has averaged about 2,000 ppm, it has never been seen to drive global temperatures...

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