Gov. Charlie Crist puts the "global" in global warming today when he heads to South Florida.

Crist meets at 8:30 a.m. at the Ritz-Carlton in South Beach with former British Prime Minister Tony Blair to discuss climate change.

The move comes as Crist sits firmly on the fence in the Republican presidential race, declining so far to endorse a candidate, and rumors swirl that he is being considered as a running mate. Trade missions to Israel and Brazil last year boosted speculation that he was burnishing his international credentials.

Crist met with presidential hopeful Rudy Giuliani in his Capitol office yesterday and told reporters he hasn't decided whether he will endorse before Florida's Jan. 29 primary.