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It’s possible to look at a graph of the past century and conclude: “Oh, my God, the planet is burning up!

” After all, the temperature has been rising, more or less, since the 1850’s, with a dip from the 1940’s to the mid-1970’s. Only 400 years ago, the planet was quite cold, a period known as the Little Ice Age (roughly 1300-1850).

We may well be heading into a new glaciation while spending billions of dollars on reducing carbon emissions on the false premise that the planet is getting too warm.

During the glacials, much of the northern hemisphere (and Antarctica, of course) is covered with ice two and three kilometres thick.

For example, in March 2008, a poll of Alberta’s 51,000 geologists found that only 26 per cent believe humans are the main cause of global warming.Forty-five per cent believe both humans and nature are causing climate change, and 68 per cent don’t think the debate is “over,” as Gore would like the public to believe.The earth’s climate is constantly changing owing to natural variability in earth processes.I do not know a single geologist who believes that it is a man-made phenomenon.Finally, a retired scientist who emailed me after reading one of my climate columns in the Times Colonist observed: “Most of my geology friends are skeptics — but it has become politically incorrect to voice such views.” Geologists tend to question the anthropogenic theory because their education tells them that current climate conditions are not unusually warm, based on either the past few thousand years, or the past few hundred thousand years, or the past tens of millions of years, or even the past hundreds of millions of years.

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