Water is the sleeping giant issue of the 21st century and we all need to wake up about it.

I've always wanted to try new things because it's exciting and it keeps you active and alive.

For me, personally, skiing holds everything. I used to race cars, but skiing is a step beyond that. It removes the machinery and puts you one step closer to the elements. And it's a complete physical expression of freedom.

Usually I like to improvise. Sometimes, depending on the nature of the piece, I like to improvise because I think it brings a certain freshness and a reality to it, as long as it doesn't go too far out of the box.

I've been able to carve out spaces for myself. At Sundance, I'm in the mountains - my property is private. I get on a horse and ride for three, four hours. Sometimes five. I get lost. But when I'm in, I'm in.

Radio, newspapers, they were normal parts of my life. In those days, you had to go somewhere to watch television and leave something to see it.

Essentially, my kids grew up with the emphasis on the environment because I became a political activist in about 1969 and it was not an easy time. Those were the days when the oil and gas companies pretty much controlled the show and anybody speaking about solar energy or carbon energy would get smashed down as being a radical or a tree-hugger or what have you. So I was out there feeling very often alone and my kids would get that.