There are 2 reasons why i feel that this issue gets no where with the general public
1. It's not sexy. As josh lyman would say on the West Wing "show a little leg". The avg person doesn't give a damn about glacier caps and CO2 levels.
2. There's an 800 pound gorilla in the room; the avg voter is old, and they don't give a damn about your future lol. They say the do.. they really don't.
I think in the next 20-30 years this is one of those things that will right itself; like marijuana legalization.. partly because we won't have a choice, but I believe the younger generations are more environmentally aware.
I think voters over the age of 50, for the most part.. really just don't care. "Well i'm not going to be around in 30 years most likely, we're getting smarter every year i'm sure someone will come out with something that will fix all of it" seems to be the mindset.