Here’s a sampling of some of Gingrich’s more interesting environmental ideas:

1) Build “a large array of mirrors [that] could affect the earth’s climate,” to extend farmers’ growing season. He outlined this proposal in his book “A Contract with the Earth.”

2) “A billion-dollar tax-free prize for a hydrogen engine that can be produced at a commercially available price. I think that we should have a substantial prize for developing the first engine that can be mass-produced that gets 100 miles or more to the gallon of fuel. I think that we should have a substantial research program under way for dramatically better ethanol products than corn or cane sugar,” he told Salon.com in an interview in 2007.

3) Disband the Environmental Protection Agency and fire all the people who currently work there. All current employees must go because “I don’t think you can train the current bureaucrats. I think their bias against capitalism, their bias against local government, their bias against economic rationality, is just amazing,” Gingrich explained at a Politico event. Replace it with an agency called the Environmental Solutions Agency and hire a new group of different bureaucrats to work there.