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.