Just like the "studies" that "prove" Global Warming. They doctor all the reports, compare apples and oranges and lie if need be. I've read a lot on the vsubject and talked to people at the UC campus in San Diego that track such things. "Global Warming" AND cooling have occurred over and over in the past. It has gone to much greater extremes than anything we have seen in the past few hundred years. Long before man could have had any effect on it. "Igor" lied through his teeth as he teamed up with George Soros in a "Carbon Exchange". Had it not flopped both would have made many millions of dollars on our backs.