There is zero debate about whether the world is getting warmer. That is a fact, a measured fact. There is some debate, although not much anymore, about what's causing the world to get warmer. And the consensus, by far is that it's us.
I got sober. I stopped killing myself with alcohol. I began to think: 'Wait a minute - if I can stop doing this, what are the possibilities?' And slowly it dawned on me that it was maybe worth the risk.