evidence: Michael Shermer sure has ‘flipped’! He quotes Flannery as saying that "even if we reduce our carbon dioxide emissions by 70% by 2050, average global temperatures will increase between two and nine degrees by 2050." Could it be that global warming is caused, in the main, by forces beyond our control? [...] I too, am a skeptic. I am particularly skeptical of conventional wisdom that reeks of left wing politics and uses none other than Al Gore as a reference. Look up Malthusian economic theory so that you understand what it means when I accuse you of having a Malthusian mind. Several months ago there was an excellent greenhouse gas article printed in your publication using thousands of years of ice core data as its basis. This data showed quite convincingly that the glacial cycles, most probably brought on by the precession of the earth in its orbit around the sun, are accompanied by increases and decreases in greenhouse gases. It also showed that the most recent interglacial warm period should have begun to cool off and green house gases should have begun declining about 6000 years ago. They have not. They have, instead, increased. The scientist who did this study pointed out that about the only possible variable to explain this change in these cycles would be the rapid expansion of human population accompanied by farming, irrigation and raising of domestic live stock. Greenhouse gases have been going up when they should have been going down for 6000 years.