A lot of people seem to misunderstand the 12 (now 11) year deadline. It's not that suddenly an apocalypse will occur in 2030. It's that after that point, we'll no longer have any realistic hope of avoiding the worst effects of climate change that will arrive in the following decades and centuries.

Maybe we need to explain it to people like cancer treatment: if we'd caught it early, maybe chemotherapy alone would have been sufficient. Today, we need invasive surgery, plus chemo, plus radiation therapy, and we also need to hope that untested immunotherapy treatments will work.

If we continue to leave it untreated, then our prognosis is very grim indeed. We won't die immediately, but our cancer will be inoperable.