On a web site called "ThinkProgress", they reveal their mushy thinking in these two paragraphs, nearly blaming the tornado outbreak in late April on the victims because they vote Republican.
“Given that global warming is unequivocal,” climate scientist Kevin Trenberth cautioned the American Meteorological Society in January of this year, “the null hypothesis should be that all weather events are affected by global warming rather than the inane statements along the lines of ‘of course we cannot attribute any particular weather event to global warming.’” [Emphasis mine]Wow.
The congressional delegations of these states — Alabama, Tennessee, Mississippi, Georgia, Virginia, and Kentucky — overwhelmingly voted to reject the science that polluting the climate is dangerous. They are deliberately ignoring the warnings from scientists.
For those of you who don't know what a null hypothesis is, I'll provide a brief explanation. A null hypothesis can be considered a default position. For example, in our legal system, a defendant is considered innocent until proven guilty. The null hypothesis is that the defendant is innocent.
More technically, the typical null hypothesis at the outset of the experiment is that no difference exists between the control and experimental groups (for the variable being compared).
So in the statement above, the null hypothesis is that all weather events are affected by global warming. But for anyone who has studied statistics and/or the scientific method at the graduate level (undergrad schools don't cover it well enough or not at all), this is backwards. The null hypothesis should be that weather events are NOT affected by global warming.
Your actual hypothesis then, the one you have to prove, is that any or all weather events are affected by global warming. This is why the "proof" or "fact" of global warming is wrong when you use the incorrect null hypothesis.
I'm not saying that global warming won't affect weather systems. But to accept the null hypothesis above would be bad science. And just so I don't get blasted by the loonies, polluting the environment is bad because we all like clean air and water, etc...so don't get confused here.
No wonder our education system is screwed up. Garbage in, garbage out.