In an interview with the Washington Post editorial board, Donald Trump said he's "not a big believer" in manmade climate change.
During the interview, Trump was asked by editorial page editor Fred Hiatt whether he believed climate change was "a real thing."
"Is there human-caused climate change?" Hiatt asked.
"I think there's a change in weather. I am not a great believer in man-made climate change. I'm not a great believer. There is certainly a change in weather that goes—if you look, they had global cooling in the 1920s and now they have global warming, although now they don't know if they have global warming," Trump replied, Mother Jones reported.
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"They call it all sorts of different things; now they're using "extreme weather" I guess more than any other phrase. I am not—I know it hurts me with this room, and I know it's probably a killer with this room—but I am not a believer. Perhaps there's a minor effect, but I'm not a big believer in man-made climate change."
Trump also stated that he doesn't believe climate change is a national security threat, despite warnings from scientists and experts to the contrary:
Well I just think we have much bigger risks. I mean I think we have militarily tremendous risks. I think we're in tremendous peril. I think our biggest form of climate change we should worry about is nuclear weapons. The biggest risk to the world, to me—I know President Obama thought it was climate change—to me the biggest risk is nuclear weapons. That's—that is climate change.
"That is a disaster, and we don't even know where the nuclear weapons are right now. We don't know who has them. We don't know who's trying to get them. The biggest risk for this world and this country is nuclear weapons, the power of nuclear weapons."
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The GOP front-runner has long been vocal about science and health-related issues, often expressing views many felt were controversial. In 2014, Trump made headlines when he advocated for American doctors who became infected with the Ebola virus to be treated in the country where they work as opposed to returning to the United States for treatment.
"The U.S. cannot allow EBOLA infected people back," he tweeted, according to the Huffington Post. "People that go to far away places to help out are great-but must suffer consequences!"