It was suggested by a contributor to another Thread that we start up a Thread on climate change. We are all suffering here in the Pacific NW with a heat wave that has gone on for a good while, and a contributor from a temperate region of Australia added that she has noticed a long-term shift towards warmer and dryer weather, or at least with more extremes, in her region. http://www.lomborg.com/ has some of the discussion dissenting from the view that it is human-influenced, with its author, a Danish scientist named Bjorn Lomborg taking that position. I know other cautious scientists who view it as a cyclical phenomenon, citing a mediaeval warming period which later cooled off... Another dissenting or discussing blog, I believe, is http://www.warwickhughes.com/blog/index.php?s=geologist, although I just found it and have not had time to read it very far, and there no doubt are others. Most of us are probably not scientifically trained enough to have followed the pros and cons to really be able to discuss it sensibly, so it may not go very far beyond the obvious. A hot summer, anyway, after a hard winter with lower temperatures damaging considerable numbers of plants in the Pacific NW!