The "Terminator" star, who founded Schwarzenegger's climate initiative and hosts Austria's annual world summit, considers his two decades of work to save the environment his "crusade," he told CBS Sunday. “I'm on a mission to go and cut greenhouse gases around the world," Schwarzenegger said, "because I'm all about a healthy body and a healthy Earth. That's what I'm fighting for. And that is my crusade.' The actor and politician (75) started the Austrian world summit eight years ago as a forum to fight climate change. Conference with takes place in Vienna, about 125 miles north of the actor's hometown of Thal. (Petra Sblendoria)