WASHINGTON (AP) A new study finds that past computer simulations of climate change have been pretty accurate.
A team of scientists looked at 17 different computer models used between 1970 and 2007. Ten of those 17 got future temperatures right.
A few others got the physics of warming right but overestimated the emissions of heat-trapping gases.
When wrongly predicted pollution levels are factored out, the study found 14 of the 17 were spot on.
The study's chief author says he decided to look back at past accuracy because critics keep wrongly blasting computer models.
Scientists say they can't experiment with Earth's atmosphere so knowing these simulations are accurate is important.