Blame it on the a-a-a-altitude. Leave it to Al Gore to come up with a scientific explanation for President Obama’s lame performance in Wednesday night’s debate. “I’m going to say something controversial here,” the former vice president said during a postdebate panel discussion. “Obama arrived in Denver at 2 p.m. today, just a few hours before the debate started. Romney did his debate prep in Denver.” Anyone who’s ever felt loopy upon arriving in the Mile-High City will admit that Gore’s theory actually kind of makes sense. “When you go to 5,000 feet, and you only have a few hours to adjust, I don’t know,” he said.