The real problem with "global warming" - or "man-made climate change" as it is now, to reflect the fact that sometimes the earth cools
- is that it is promoted as a religion. "Unbelievers" are considered heretics. They're even talking about making "climate change denial" illegal, like holocaust denial already is in much of Europe (& the US I believe).
The trouble is, unlike the holocaust, there's no direct evidence of man-made climate change... instead, we have to rely on esoteric "indicators" like tree-ring widths (as we know, trees grow in direct proportion to temperature
nothing to do with rainfall, then
), ice-cores (great for long-term precasts, but no use for recent data, i.e. industrial revolution onwards), etc.
Oh, and don't quote the surface station temps either; the number of actual surface stations have been dropping precipitously since the late C20th, and somehow this is supposed to give more accurate temperatures? There's also many anomolies in the dataset which tend to reduce confidence in the results.
Of course, there IS something happening.... the increasing Arctic Circle ice melts, the forest infestations which Stan has pointed out in the past, and so on. The question is: Is this caused by mankind's CO2 emissions, or something else? I have to say, the odds are seriously stacked on "something else", but we're all paying the CO2 price - and the price will do nothing but rise.
After all, as any fule knos, more taxes are always the solution to the problem.