rotorbee - I can't say I really mind about the timescale, it's the people who think this whole discussion has nothing to do with man, and that therefore they don't have any responsibility to change anything about the way they live their lives, for the consideration of the future of the planet, that I have problems with!
The chances are that most of us posting here will be dead by the time any serious changes to the environment start to affect humans in large numbers, but I believe that the Mad Max films may not prove to have been far off the mark - it's not if but when!
