It's very, very rare in this business [moviemaking] where a script lands on your lap ready to go.

Right now, our mother -- our mother -- all of our mothers, Mother Earth is hurting. And she needs a generation of thoughtful, caring and active kids like all of you to protect her for the future. You can help us win the battle to clean up our air, our water, our land, to protect our forests, our oceans and our wildlife.

It gets to the point where you're hot, you're hot, and when you're not, you're not. It's so true. I have to slow down soon.

I became an actor at a very young age, but I also had a deep respect for nature and I think I was sort of a little biologist when I was younger. I watched documentaries on rainforest pollution and the loss of species and habitats for animals around the world. It affected me in a very hardcore, emotional way when I was younger. So, later in life I wanted to continue that path more and investigate and learn more about ecological issues.

To play a repressed gay man, I had to explore what life was like in an era of sexual repression.

I've changed. You can't help it. Your mind starts working in a different way. You feel really scrutinised by people.

We must set an example now and move environmentalism from being the philosophy of a passionate minority ... to a way of life that automatically integrates ecology into governmental policy and normal living standards.