I don't belong to, or follow any groups but I have followed the Global Warming issue since I read the 1995 IPPC Kyoto report on GW.
First, there is no consensus, but some scientist want us to believe the GW is a problem. So consider this, did you know in 1974 these same scientists were warning us about global COOLING?
http://www.time.com/time/magazine/article/0,9171,944914,00.html
Did you know In 2007, the UK High Court ruled “Inconvenient Truth” contained “Nine Key Scientific” errors?” The judge ruled it, a "political film" not a science film!
http://www.telegraph.co.uk/earth/earthnews/3310137/Al-Gores-nine-Inconvenient-Untruths.html
So we know that for some reason, some scientists and politicians want us to believe there is a crisis, of one kind or another. Lets look at the data they base their arguments on.
1. Climategate emails document researchers “hiding data,” "adding temps,” and their hate for dissenters. They had to adjust the data to agree with what they want to say.
http://blogs.telegraph.co.uk/news/jamesdelingpole/100023598/after-climategate-pachaurigate-and-glaciergate-amazongate/
2. The Russians confirm UK scientists MANIPULATED DATA to exaggerate global warming
http://blogs.telegraph.co.uk/news/jamesdelingpole/100020126/climategate-goes-serial-now-the-russians-confirm-that-uk-climate-scientists-manipulated-data-to-exaggerate-global-warming/
3. The Chinese say that weather stations were moved around to get higher readings in China!
http://www.guardian.co.uk/environment/2010/feb/01/dispute-weather-fraud
How can you base ANY argument on "data" that has been tweaked, adjusted, and manipulated? How can you prove all the data your argument is based on is real data? I think its impossible, and as far as I can tell all the data is corrupt.
If they want me to believe this, they need to start over with a team of scientists from each side.