for the record: Video of the opening. Comments by David Attenborough "I am always cautious about crying wolf. I think conservationists have to be careful in saying things are catastrophic when, in fact, they are less than catastrophic," he told The Independent in 2006. "Also, I'm not a chemist or a climatologist or a meteorologist; it isn't for me to suddenly stand up and say I have decided the climate is changing. That's not my expertise." .... "Now I do not have any doubt at all," Attenborough said two years after that lecture. "One of the things I don't want to do is to look at my grandchildren and hear them say: 'Grandfather, you knew it was happening — and you did nothing.'"