probably here to stay and that the appropriate action for us to take is to find ways to find fuel conservation." He highlighted support for government investment in developing sources of renewable energy, such as wind and solar, early in his administration, although he opposed a proposal that would have sited a wind farm in Nantucket Sound off Cape Cod, where he said the visual impact would be detrimental to the state's tourist economy. Romney initially supported a regional greenhouse gas cap-and-trade initiative for New England and eastern Canada, but he ultimately withdrew his support when he was unable to ensure establishment of certain limits on the penalty fees businesses would be charged for exceeding emissions allowances. A week later, his administration issued a rule allowing companies to pay a fine instead of having to clean up emissions of toxins like mercury. Both decisions were made as Romney announced he would not run for a second term as governor and began to focus on entering the 2008 presidential campaign. Some former Romney policy advisors later told The New York Times that his political team had been afraid that, with industry being opposed to the cap-and-trade proposal, Romney's having included Massachusetts in the Regional Greenhouse Gas Initiative would have made Romney's chance of winning a presidential campaign very unlikely. During 2012 presidential campaign Early in the 2012 presidential campaign, in June 2011, Romney said, "I don't speak for the scientific community, of course, but I believe the world's getting warmer. I can't prove that, but I believe based on what I read that the world is getting warmer. And number two, I believe that humans contribute to that. I don't know how much our contribution is to that, because I know that there have been periods of greater heat and warmth in the past but I believe we contribute to that. And so I think it's important for us to reduce our emissions of pollutants and greenhouse gases that may well be significant contributors to the climate change and the global warming that you're seeing." Four months later, in October 2011, he said, "My view is that we don't know what's causing climate change on this planet. And the idea of spending trillions and trillions of dollars to try to reduce CO2 emissions is not the right course for us." He expressed his opposition to cap and trade plans and to