Several months ago, there was a minor buzz in the blogosphere that Bush would do something dramatic about global warming in the 2007 State of the Union speech, a "Nixon goes to China" moment. Since then, nothing. You'd think we'd hear a little more by this point.
He's got to talk about something besides Iraq and his newly-minted hatred of Congressional budget earmarks. I'd welcome something dramatic about global warming. I'd actually welcome even just an outright acknowledgment of global warming. No sign of that happening so far though.
UPDATE: The rumors resurface here. Also, I saw somewhere a single admission by Bush in 2005 that human activities affect climate, but he sure hasn't been vocal about that.