"Ice Age Climate Analysis: Insights into Climate Change and CO₂ Impact"

A new study led by the University of Washington analyzes the last ice age to better understand the relationship between CO2 and global temperature. The research suggests that the worst-case scenario for future warming due to doubling of CO2 is less likely, reducing the estimate from 5 to 4 degrees Celsius. By examining the cooling effects of the North American ice sheet during the last glacial maximum, the study indicates that CO2 played a smaller role in setting ice age temperatures than previously estimated. This research provides more confident predictions for future warming and emphasizes the limitations of using recent decades as a predictor of future global warming.