Explorers Foundation likes good argument, contention among points of view, presentation of conflicting evidence.

This handbook is extremely well done. And, if it's not correct, it deserves a careful and civil response. It should not be necessary to point out that vilifying the author will not answer her arguments. The Heartland Institute, is distributing 150,000 copies of this to elected officials, educators, journalists, civic and business leaders, and other 'influential' people.

http://joannenova.com.au/globalwarming/skeptics_handbook_2-1.pdf (550KB)

The above is part of:
http://joannenova.com.au/global-warming/

A few hours after posting this, Pyotr Patrushev suggested this fascinating video presentation by Dr. Ian Plimer: http://tinyurl.com/ccakd8