More people need to read this.
"In the wake of Hurricane Katrina, some commentators are jumping to the conclusion that global warming is responsible for its destructiveness. While there is a theoretical possibility that higher ocean temperatures could lead to more powerful hurricanes, no individual hurricane can be shown to be so affected. Moreover, most scientists who study hurricanes believe that we are moving from a period of low hurricane activity to one of greater activity – change not caused by global warming. So, arguing that Katrina’s ravages are the result of climate change commits a causal fallacy."
"1. There is no way of telling how much, if any, of Katrina’s destructiveness was caused by global warming. There were equally, and even more, destructive hurricanes prior to global warming, and it is impossible to differentiate between a hurricane that is destructive due to global warming and one that is just plain destructive."
"2. Most scientists who study hurricanes believe that they are becoming more severe due to cyclical changes which have nothing to do with global warming, so it may be that all of Katrina’s destructiveness was due to these other causes. If this were not the case, there would be a plausible argument that global warming was responsible for Katrina’s excessive destructiveness for lack of an alternative explanation. However, there is an alternative. Now, I am not a scientist who studies hurricanes myself, so I’m relying upon press reports for the expert opinions of those who do (see the Resources below). Of course, press reports are not always reliable, so caveat lector."