I've just got to maintain my passion for what I do.

We're at risk of losing this iconic species for all time. Once it's stripped of its natural instincts, it's no longer a tiger. But there's a lot of species like that. The more intriguing thing, throughout Asia, a lot of these countries are selling off their jungle-and-forest rights for oil and for paper-and-pulp companies.

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.

I'm a big history buff so to walk the streets...the ancient world like that was pretty astounding.

When I was very young, biology, the diversity of life, was one of my main interests. I know there's this image people have that I'm this spoiled, cocky punk of an actor. Honestly, that's not who I am. I really care that so many species have been wiped out, like genocide of entire races. I believe in the divine right of all species to survive on this planet. So I decided I want to be active as an environmentalist. I learned. I asked experts. I got active.

I sometimes have to look back and say, "Wow, this is amazing what has happened to me. I have been able to fulfill a lot of these dreams that I had when I was very young." It's a pretty amazing feeling. But at the same time it becomes addictive!

It's a hard concept for me to wrap my head around to completely sacrifice any sort of love in your life, to never experience that on a personal level.