claim: Let’s find out by comparing the actual temperatures since 1979 with what the 32 families of climate models used in the latest U.N. report on climate science predicted they would be.
evidence: Climate model projections summarized in the report indicated that during the 21st century the global surface temperature is likely to rise a further 0.3 to 1.7 °C ( 0.5 to 3.1 °F ) in a moderate scenario, or as much as 2.6 to 4.8 °C ( 4.7 to 8.6 °F ) in an extreme scenario, depending on the rate of future greenhouse gas emissions and on climate feedback effects.