I've never been particularly intrigued by the climate disaster angle. Not that it isn't an issue, but that it shouldn't be a prerequisite for a person to consume less by choice.

If I have to convince someone that 1) the climate is changing beyond historical patterns 2) I know the chemical/mechanical processes at play and 3) we caused it just so they turn off the TV when they leave the house or enjoy their current car a few years longer, its a situation that will never be resolved.