PS - As for the floods in Australia, Brazil and elsewhere... I believe that those are the result of La Niña. I find it as frustrating as the next man to see any and every environmental - or even social - problem simply shoehorned into a climate change "angle". (E.g. See towards the end of this post.) However, extreme weather events are among the most worrisome aspects of the big CC and, if anything, these tragic events show up our limitations in adapting or coping with irregular (violent and nonviolent) natural phenomena.