Skeptical about Common Sense
Along comes a little graph in a little booklet from Australia and all of a sudden I'm a skeptic. I suppose I should test this graph before I believe it, but before I do that, I'll share this little booklet with you. The graph is a bar chart on page 8 and it titled "As Carbon Dioxide Increases it Has Less Warming Effect". Combined with the line graph on page 5 showing global temperature variation verses carbon dioxide concentration between 150,000 and 100,000 years ago derived from Greenland ice core samples, the graph on page 8 shakes the greenhouse effect argument right to the core. Yes carbon dioxide causes a greenhouse effect, but the effect significantly - logarithmically - decreases as concentrations of CO2 increase to the point where the increases we are seeing now are insignificant. I had been led to believe that the logarithmic effect was just the opposite of what this bar chart shows.
So the pamphlet is called The Skeptic's Handbook. It is on a PDF file (2.72 MB).