New Jersey Gov. Chris Christie, bumped to the kiddie table for tonight’s fourth Republican primary debate, talked to a crowd of mostly college students at a pub in Hanover, New Hampshire, where he addressed the issue of climate change.

Christie pointed to New Jersey’s mix of energy sources, which is moving away from fossil fuels. “Fifty-three percent of our electricity is produced by nuclear power… and New Jersey is in the top three solar states, behind California and Arizona.” Christie said each state should adopt a portfolio of energy sources that makes sense for them.

“Iowa should emphasize wind turbines.”

Christie acknowledges that global climate change is driven by human activity and supports efforts to reduce carbon emissions, but labeled the issue a global problem, emphasizing the need to work with the Chinese and other major polluters on this issue.