The study, published on Thursday, finds that if CO2 in the atmosphere doubled, global temperatures would climb at most by 3.4 degrees Celsius. That’s far below what the UN has been saying for decades, namely that temperatures would rise as much as 4.5 degrees, and possibly up to 6 degrees.
Basically, the scientists involved in the Nature study found that the planet is less sensitive to changes in CO2 levels than had been previously believed. That means projected temperature increases are too high.
Of course this is just one study, but it supports the contention climate skeptics have been making for years — that the computer models used to predict future warming were exaggerating the impact of CO2, evidenced in part by the fact that the planet hasn’t been warming as much as those models say it should.
Why is this important? Because all those horror stories told over the past decades are based on predictions of temperature increases that are much higher than 3.4 degrees.