Hmmmmm, I wonder...

....if it was weather related?

"Climate campaigner Al Gore has canceled a lecture he was supposed to deliver in Copenhagen," the Associated Press reports:

The former vice president and Nobel Peace Prize winner had been scheduled to speak to more than 3,000 people at a Dec. 16 event hosted by the Berlingske Tidende newspaper group.

The group says Gore canceled the lecture Thursday, citing unforeseen changes in his schedule.