“I and other so-called ‘deniers’ are members of the 97 percent consensus, which refers to the following: Yes, the earth’s climate has been warming overall for more than a century. Yes, humans emit CO2, and CO2 has an overall warming effect on the climate,” Curry said. Where the consensus ends, Curry added, is “whether the dominant cause of the recent warming is humans versus natural causes, how the 21st century climate will evolve, and whether warming is dangerous.”