I reckon climate change is just an idea that hasn’t been spread properly yet. It doesn’t have a face like the civil rights movement had in Martin Luther King, it doesn’t have a set of goals, just a mountain of research, and it doesn’t have human emotion connected to it. No one thinks about it because they can’t relate to it.
“Earn enrolment first, a commitment to find a path, then bring on the process and the facts.” – Seth Godin (check him out he’s a genius). To win someone onto your way of thinking, first tell them how it is going to change their lives, then give them the evidence.