I really try to say things as they basically are and it so happens that it is a good message that things are getting better, but there are still problems.

Global warming is real - it is man-made and it is an important problem. But it is not the end of the world.

I'm an old member of Greenpeace. I worried intensely, as I think most of my friends did, that the world was coming apart.

Obviously any group that has to have funding also needs to get attention to their issues.

I think it's great that we have organisations like Greenpeace. In a pluralistic society, we want to have people who point out all the problems that the Earth could encounter. But we need to understand that they are not presenting a full and rounded view.

Listen, global warming is a real problem, but it's not the end of the world. A 30-centimetre sea level rise is just not going to bring the world to a standstill, just like it didn't over the last 150 years.

The obvious issue is providing clean drinking water and sanitation to every single human being on earth at the cost of little more than one year of the Kyoto treaty.