by Brian Angliss
July 23, 2007
Anti-global heating claims – a reasonably thorough debunking
[Updated 9/15/07: Added myths #19 & #20, climate predictions aren’t possible and volcanoes emit more CO2 than people, respectively]
[Updated 9/14/07: Updated Myths #4, 8, 10, & 13]
The Earth is heating up, and human beings burning fossil fuels are the dominant cause. It’s not ocean warming that dominates, it’s not cosmic rays, it’s not variations in the Earth’s orbit and tilt toward the sun (Milankovitch cycles), it’s not solar irradiance – it’s us. But there is a very vocal minority that refuses to believe global heating (the severity of the problem requires more urgent language, and besides, 105 degrees isn’t warmer than 100, it’s hotter) is real.
Global heating deniers fall back on a variety of myths in order to buttress their position. These myths vary from logical fallacies to pseudoscience to poor math to scientifically valid but disproved hypotheses. Yet every single claim against global heating I’ve found has been debunked at one time or another, and at this point, the only hypothesis that fits all the data is that human civilization is heating up the planet.