"Martin Brown" wrote in message
oups.com...

1. Global warming is a fact.

So far so good. Although it would be better to say that there is good
observational evidence for global warming.

The observational "evidence" is the weakest link in the AGW story. After
that there is only spin, political desire and scientist's career ambitions
to prop it up.

What is observed are climate conditions that have been both warmer and
cooler in recent history. For there to be any variation there must be a
trend one way or the other and most likely a historical plot of average
global temperature, measured at the same resolution as we are measuring now,
would have trends and hockey sticks all over the place. Always have been,
always will be. The rest is conjecture.

Paulus