Wednesday, February 29, 2012
More Global Warming
Those facts are these: Humans, since the industrial revolution, have been burning more and more fossil fuels to power their societies, and this has led to a steady accumulation of greenhouse gases, and especially carbon dioxide, in the atmosphere. At this point, very simple physics takes over, and you are pretty much doomed, by what scientists refer to as the “radiative” properties of carbon dioxide molecules (which trap infrared heat radiation that would otherwise escape to space), to have a warming planet. Since about 1995, scientists have not only confirmed that this warming is taking place, but have also grown confident that it has, like the gun in a murder mystery, our fingerprint on it. Natural fluctuations, although they exist, can’t explain what we’re seeing. The only reasonable verdict is that humans did it, in the atmosphere, with their cars and their smokestacks.