Tuesday, July 15, 2008

600 million years of temperature and CO2 concentrations

Because it was cold until the end of the 1970s, a lot of the climate change rhetoric has emphasized the rise in temperatures since then, and the rise in CO2 concentrations that ostensibly causes temperatures to rise. Older generations might challenge the theory based simply on their recall the heat of the 1930s and the global cooling scare of the 1970s, but here is a graph with some real perspective. Note to present-day earthlings: you are living in a cold period, and one with record low levels of CO2.

Question: what is the temperature that we should consider natural, and therefore desirable, for our planet?

Chart from Lord Monckton's paper in American Physical Society's latest publication.

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