It may seem silly to have to say this, but in a culture where science and politics are often mish-mashed, climatologists and meteorologists are noting that the recent devastating tornadoes were not caused or aggravated by global warming.  

Hey, if you saw an "Inconvenient Truth" and images of Hurricane Katrina, making it look like global warming was to blame for the destruction, you can understand why scientists are in the uncomfortable position of having to deny things no one has yet asked about.

The tornadoes killed 250 people, the worst weather disaster in years, so it's getting a lot of attention.   But "Tornado Alley" alley is not new and it's nothing to do with CO2 increases since 1990, despite what environmental group marketing campaigns may soon allege.   Experts had predicted there would be more tornadoes this year as part of the natural cycle.