Learning To Think Like A Climate Scientist stevengoddard 5 years ago X Privacy & Cookies This site uses cookies. By continuing, you agree to their use. Learn more, including how to control cookies. Got It! Advertisements Last time CO2 was this high, Boston was very warm. Therefore CO2 is the control knob. Advertisements Share this:Print RelatedCO2 Contributes Less Than 2.5% Of The Greenhouse EffectOctober 17, 2014With 58 commentsA Christmas Gift From Dr. Bill GrayDecember 24, 2014With 108 commentsLearning To Think Like A Top Climate ScientistSeptember 17, 2013With 8 comments