Deniers isn't the right word. Try "distrusters" instead. We are the people who have learned to take what politicians, whether elected or nor, with a grain of salt. Our degree of distrust seems t go along with how insistent they are about what they say. The more insistent the more likely it's hot air. Also, look at who benefits from the path they are trying to redirect us to, and who suffers. And finally, the personal wealth accumulated by politicians over the course of their office suggest that what they say may be but a sales pitch to add to their own wealth.
From a practical standpoint, I don't believe they have accounted for all the variables that affect the earth we live on and seriously doubt that they can accurately compare today's earth with the earth of 25 years ago, or 100 years ago. There are so many lies they have backed away from that they first start with a conclusion, then try to make up a credible reason to support the conclusion. Like they tried to pass coastal areas sinking for sea level rising. Then it was icebergs melting, then it was thermal expansion.
Just think about it. The same government that was convinced that Solyndra was a wise place for the US government to fork over a half-billion dollars in taxpayers' money is the same government that insists that global warming cause by humans in America is established science.
