Log in

No account? Create an account

Global Warming

I haven't written much about global warming lately. It's partly because I haven't been blogging as much, and partly because news about it is breaking too rapidly for me to keep up with it.

But after it snowed Tuesday, for the second (or maybe third...I've lost track) time this winter, and after it was reported that this area has had a record cold winter, I  have to post something.  I understand that more snow doesn't in and of itself disprove global warming. There are some who say that in fact, snow is proof of global warming, since warmer air carries more moisture.

That's an argument that I can't dismiss out of hand. On the other hand, many global warming believers in the past have said that a lack of snow is evidence of global warming, as can be seen in the video below.

You can't have it both ways. You can't dismiss the weather when it is contrary evidence and use it when it is supporting evidence. Not unless your goal is to support your theory regardless of the empirical evidence.

A recent story from Reuters suggests that this is exactly what a lot of global warming scientists want to do. The story doesn't explicitly say this, but the opening sentence is very telling:

Climate scientists must do more to work out how exceptionally cold winters or a dip in world temperatures fit their theories of global warming, if they are to persuade an increasingly sceptical public.

(Emphasis mine)

Scientists are not supposed to fit empirical evidence to their theories. They are supposed to re-examine their theories in light of new evidence.