Texas Governor Rick Perry, struggling to regain his status as front-runner for the Republican presidential nomination, expressed fresh doubt on Saturday about whether humans are causing climate change.
“I still stand by that the science is not settled on man-made global warming,” Perry said while campaigning in the key early primary state of New Hampshire.
Perry, a favorite of the fiscally conservative Tea Party movement, also said that efforts to slow rising carbon dioxide levels in the atmosphere could “devastate” the United States economically.