"As I see it, Jim's views were at the alarmist end of the spectrum of scientific opinion, so frankly I see him largely as just coming back into the fold of mainstream thinking," Mann wrote in an email to LiveScience. "That having been said, he has made some statements which appear to reflect a misunderstanding of what the science has to say."
Kevin Trenberth, a climate scientist at the independent National Center for Atmospheric Research (NCAR) in Boulder, Colo., went further: "The fact is he knows little or nothing about climate change."
“The problem is we don’t know what the climate is doing. We thought we knew 20 years ago. That led to some alarmist books – mine included – because it looked clear-cut, but it hasn’t happened,” Lovelock said.
“The climate is doing its usual tricks. There’s nothing much really happening yet. We were supposed to be halfway toward a frying world now,” he said.
“The world has not warmed up very much since the millennium. Twelve years is a reasonable time… it (the temperature) has stayed almost constant, whereas it should have been rising -- carbon dioxide is rising, no question about that,” he added.