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Quote: "The public, press and policy makers have been repeatedly told that three claims have widespread scientific support: Global temperature has risen about a degree since the late 19th century; levels of CO2 in the atmosphere have increased by about 30% over the same period; and CO2 should contribute to future warming. These claims are true. However, what the public fails to grasp is that the claims neither constitute support for alarm nor establish man's responsibility for the small amount of warming that has occurred."

I guess what he's saying is that the 30% increase in CO2 which occurred since the late 19th century might not be wholly responsible for the rise in temperature over the entire 20th century -- which is generally correct, as the early 20th century increase is partially attributed to an increase in solar activity -- but increasing CO2 could/should cause temperatures to rise in the future. IN essence, that's the same take on the science as the mainstream community, except that the warming trend initiating in the mid-1980s is generally attributed to greenhouse gases alone. So Lindzen's "future" actually began about 20 years ago.