There is an excellent interview with David Attenborough on The Independent site. The best quote has to be:
"There is no question that climate change is happening; the only arguable point is what part humans are playing in it," he says. "I would be absolutely astounded if population growth and industrialisation and all the stuff we are pumping into the atmosphere hadn't changed the climatic balance. Of course it has. There is no valid argument for denial."The question is: what are we going to do about it?