“Lately, we’ve heard a lot of professional politicians, a lot of the folks who are, you know, running for a certain office. Who shall go unnamed,” Obama said. “They’ve been talking down new sources of energy. They dismiss wind power. They dismiss solar power. They make jokes about biofuels. They were against raising fuel standards. I guess they like gas guzzlers.”…

Obama also took it a step further, comparing the Republican candidates to the naysayers who thought explorer Christopher Columbus would fall off the edge of the Earth when he set sail for the New World.

“If some of these folks were around when Columbus set sail…They must have been founding members of the Flat Earth Society. They would not have believed that the Earth was round,” the president joked to a laughing crowd. (For the uninitiated, the Flat Earth Society dates back to the 1800s and consists of people who believe the Earth is not round.)