There’s been some blogospheric buzz over this item on the San Fran Chronicle blog. Al Gore was going to appear today at a fundraiser for Sen. Barbara Boxer, but he abruptly canceled. Here a bit from the note Boxer sent out:

I just got a call from Vice President Al Gore. He told me that he needs to travel abroad tomorrow for an exciting and urgent mission that could result in a major breakthrough in the fight against global warming.

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There’s been talk that Gore might be heading overseas to accept the Nobel Prize. I’m afraid that’s not so — the ceremony awarding the prizes doesn’t take place until Dec. 10. There’s no point being in Norway to listen to the announcements on the radio.

So … what is it? What "exciting and urgent mission that could result in a major breakthrough" has called Gore suddenly and urgently out of the country?

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Speculate wildly in comments.