It almost feels like having a 'shopping list' of tipping points:
* Arctic ocean ice-free
* Glacier x, y or z disappeared
* Amazon forest turned into savannah
* Greenland ice sheet melted
* Antarctic ice sheet melted
* Global temps 1.5, 2, 2.5°C etc above pre-industrial levels
* CO2 past 500ppm in the atmosphere. On to 550 & 600!
Etc, etc, and check off each 'achievement' 1 by 1.
