Ice might kill us all if we muck up the environment more...

Climate change can't kill us all unless we hit some strange runaway effect that wasn't triggered when atmospheric CO2 levels were higher 500 million years ago (although the sun was 5% less bright back then). There might only be a couple million people hanging out on tropical Antarctica, but they could survive.

Humans are hardy; our species survived the ice age and the accompanying desertification of Africa with just some sharp rocks, our species can survive a mass extinction event with all our modern science and technology.

No, if we die out entirely, it will be fascism that does it. Shitheads that would rather burn the last remaining footholds of human survival than let the future exist outside of their control.

Even if they do pay attention to it, I think the global consensus is that it wouldn’t matter anyway… we are fucked.