If the Guardian has an article by a scientist...
...who is actually working on ice cores, and if the article refers to evidence which is (apparently) well researched, then it's not an unreasonable cite.
I said NOTHING about whether CO2 causes global warming. I specifically said that you could argue all you like about whether the rise has any effect at all. I merely said that it was a fact that CO2 has risen significantly, and it's difficult to see any other explanation which doesn't involve man.
The article which bill 36 asked me to read, is, however, an article written with an agenda. It reminds me of anti-evolution propoganda - full of quotes with no context, loads of doubtful possibilities thrown out and appeals to authority.
I do not dispute that people on both sides have an agenda. I do not dispute that this is not an exact science.
But at the moment, the scientific consensus is clearly that there is a rise in C02 in the atmosphere, and that it's very likely indeed to be a result of the action of man. That's ALL I said. And, speaking purely personally, it's difficult for me to see how anyone could dispute it.
Finally - nyelvmark - please look up the difference between weather and climate.