NASA Study Links Extreme Summer Heat to Climate Change 0 Randall Gross EnvironmentAugust 2012Wednesday, August 8, 2012 at 5:33 am PDT • Views: 1,824 pbs.orgVideo Average Value Bell Curve Big Effect Climate Change Degrees Celsius Warmer Global Warming James Hansen Midwest Moscow NASA Study Natural Cycle Past Decade Random Variable Standard Deviations Celsius Extreme Summer Heat Planet