"It’s an assertion repeated by politicians and climate campaigners the world over – ‘2,500 scientists of the United Nation’s Intergovernmental Panel on Climate Change (IPCC) agree that humans are causing a climate crisis’.
"But it’s not true. And, for the first time ever, the public can now see the extent to which they have been misled. As lies go, it’s a whopper. Here’s the real situation...
Read more here: http://canadafreepress.com/index.php/article/968
SJT & Green Davey:
1) A PhD in one domain is no guarantee of expertise in another, and one can certainly do good work without one.
2) However, if someone is widely listed as having certain credentials, it seems reasonable to politely inquire as to the reality of the credentials.
3) In this case:
a) Does John McLean have a PhD, from what school, in what discipline, when?
b) Is he a computer scientist? (Some {software engineers, computer consultants, programmers} are, but many are not, or at least, would not usually be labeled as such by people who are.)
For more (as 2) is a complex topic), see:
http://scienceblogs.com/deltoid/2007/12/monckton_watch_2.php#comment-681752, which also mentions Piled higher and Deeper.