Sleep is crucial and I tend to find when the sun is shining I find it much more difficult to get that sense of sleep.

Freud is usually viewed as the person who linked psychoanalysis to some issues in the environment, usually man-made. So I thought it would be fun to throw that in the mix.

For me, DJ culture - with its obsession with collecting records and archiving everything - predated the "cloud" concept with primitive material like the mixtape. Now we would call it "collaborative filtering" or something technical, but the impulse is the same - gather fragments, make something new. That is how you will bypass the climate-change skeptics: render them totally obsolete.

I can only wonder what astronauts must feel like or something like that when you're really in the space of silence and you are feeling and breathing in a way that you're really aware of your muscle and bone and the breath and the body and the movement and all of those things that just you take for granted in the urban landscape.

Antarctica, one of the things that was so remarkable about it was that the ice itself is a kind of pure geometry, so say, for example, if I was facing someone wearing I don't know, a Joy Division t-shirt with the mountains on it or something like that.

So the physicality of that and the just the sheer lack of urban noise and machinery - just the wind, the water and your breath, you know that kind of thing - it was pure poetry and you know I treasure that.

Antarctica is one of the most remote and beautiful places on earth. I don't think that everyone should go there. I also think that we need to respect it as a kind of a national park for the planet. It should be you know put in parentheses.