evidence: Schneider's own calculations, which cast serious doubt on the IPCC's extreme prediction, broadly agree with an MIT study published in April of 2001. It found that there is a "far less" than one percent chance that temperatures would rise to 5.8 degrees C or higher, while there is a 17 percent chance the temperature rise would be lower than 1.4 degrees. [...] Despite this, the alarmists continue to use these models and all the other flimsy evidence I've cited to support their theories of man-made global warming. [...] Now I want to turn to temperature trends in the 20th Century. GCMs predict that rising atmospheric CO2 concentrations will cause temperatures in the troposphere, the layer from 5,000 to 30,000 feet, to rise faster than surface temperatures-a critical fact supporting the alarmist hypothesis.