I think this is pretty meaningful, (although you should read some of the contrary garbage in the associated comments).  Part of John Lovelock’s comments:
““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 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 was wrong, is prepared to admit this on the basis of contradictory scientific evidence and is brave enough to do so in public.
Whilst other alarmists are seeking less honourable avenues and denying the obvious, James Lovelock should be praised for his honesty and realistic approach.

Related articles

• Climate Change – Lovelock repents: Flannery, Gore and I Were “Alarmist” (papundits.wordpress.com)
• Daily Benefactor News – Climate Alarmist Calls For Burning Down Skeptics’ Homes (thedaleygator.wordpress.com)