Here, John Bolton explains, nay denies, global warning: "But what about climate change? All the Republican candidates now acknowledge that global warming is a problem. Do you think Gore brought attention to it? I don’t think the world has a correct temperature. It goes up and it goes down. But even if there is global warming, the notion that you are going to reduce carbon emissions enough to have an impact on it is just — serious people don’t believe that’s true."