I'm no longer sceptical. I no longer have any doubt at all. I think climate change is the major challenge facing the world.

Children start off reading in books about lions and giraffes and so on, but they also-if theyre lucky enough and have reasonable privileges of any human being-are able to go into a garden and turn over stone and see a worm and see a slug and see an ant.

I think a major element of jetlag is psychological. Nobody ever tells me what time it is at home.

If we were all to reduce our demands for energy, it would make an enormous amount of difference.

Crying wolf is a real danger.

The climate suits me, and London has the greatest serious music that you can hear any day of the week in the world - you think it's going to be Vienna or Paris or somewhere, but if you go to Vienna or Paris and say, 'Let's hear some good music', there isn't any.

Instead of controlling the environment for the benefit of the population, perhaps we should control the population to ensure the survival of our environment