It's interesting that the conservative climate change deniers have changed tack from first attempting to deny the existence of climate change (that didn't work) to claiming the science was flawed (it isn't) and that there is no concensus in the scientific community (there is). The so called climategate with the stolen emails was wonderful until an independent panel (called for by the deniers) found that there was nothing wrong with the research or the emails.

I guess they're running out of options, so pulling out predictions from over 40 years ago that haven't come to fruition is the best they can come up with. I did a little digging and many of the denialist websites are fizzing at the bung over this new and conclusive evidence that climate change isn't real and/or primarily caused by human activity.

Let's look back to 1970 and some of the other expectations:
The Triumph Bonneville 650 was one of the fastest bikes on the road and twin discs were considered dangerous because they would lock front wheels up.
We had made it to the moon and it was expected that there would be a moon station within a decade.
Petrol was 8.2 cents a litre in NZ and 7.5c a litre in the UK and was a limitless supply - cars were getting bigger and thirstier - compare a 1970 Valiant to a 1975 Valiant.
The Vietnam war was going to be won by the US.

I guess debating the science and on the evidence is something you will never win, so this is the best you can do.