12 global tipping points
1. Amazon Rainforest
2. North Atlantic Current
3. Greenland Ice Sheet
4. Ozone Hole
5. Antarctic Circumpolar Current
6. Sahara Desert
7. Tibetan Plateau
8. Asian Monsoon
9. Methane Clathrates
10. Salinity Valves
11. El Nino
12. West Antarctic Ice Sheet
