Scientists think within 20 years there may be no ice left at all at certain times of the year. The ice acts as a giant mirror to deflect heat, so less/no ice means the earth gets hotter.
And still governments prevaricate over whether or it to act and the media perpetuate the debate. We are like the citizens of Pompeii, with scientists trying to tell us that Vesuvius is going to blow and we are all telling them they are crazy. Or we are like the citizens of Kypton, not listening to Jor-el. You decide.
The obituary of the human race will read “well it's not like they weren't warned, but they were too stupid to listen.”