George Bush - Prodigal Son?

I've been mulling all week about GWB's conversion to climate change believer, nay, self-appointed global leading light on the topic. While I got really angry about being lectured by a sanctimonious halfwit on what we all knew 15 years ago, a nagging feeling persisted - "he doesn't HAVE to do this". He's in the later stages of his presidency, some oil baron or other will line his pockets for the rest of his life, and more people will hate him for the War on Turr than for his lack of action on climate change. So why bother?

Maybe, just maybe, the man does have a brain after all.