ON-Lion Letter

"It has been claimed that CO2-induced global warming will be so great and so rapid that many of Earth's trees will not be able to migrate towards cooler regions ... rapidly enough to avoid extinction," begins a January report from the Science & Public Policy Institute (SPPI) in Haymarket, Va.  "This prediction is based on the assumption that tree growth rates rise from zero at the cold limit of their natural ranges (their northern boundaries in the Northern Hemisphere) to a broad maximum, after which they decline to zero at the warm limits of their natural ranges."  Research, however, has "convincingly demonstrated that this assumption is only half correct:  it properly describes tree growth dynamics near a Northern Hemispheric forest's northern boundary; but it is an inaccurate representation of tree growth dynamics near such a forest's southern boundary.

"[I]t would appear that Earth's trees have nothing to fear from any future global warming that might possibly occur, other than climate-alarmist-manufactured fear itself," concludes Forest Growth Responses to Increasing Temperatures.  "In fact, their physiology is such that they would much more likely find that such a warming would actually enhance their rates of growth and their degrees of development."

The Lynde and Harry Bradley Foundation in Milwaukee supports SPPI.

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