SAI

Question 1

what is it

Answer 1

stratospheric aerosol injection
- releasing particles (e.g. sulphur) into stratosphere to increase amount of sunlight reflected back into space

Question 2

pros

Answer 2

• achieves cooling affect
• stops GHG from getting worse
• PP for climate change (calls of PP on itself? - shue)

Question 3

risks of deployment

Answer 3

• physical e.g. acid rain
• distributive unfairness in effects
• termination schock
• political risk

Question 4

risk of R+D

Answer 4

• reduced mitigation efforts
• used to exert power
• McKinnon - field testing could lead to to lock-in (slippery slope to deployment)
• risks of no research (could lead to future researchers using old poor data)

Question 5

McKinnon

Answer 5

SAI should be governed in a way that prevents lock-in e.g. having shutdown mechanisms in place

Question 6

McKinnon on Shues version of PP

Answer 6

SAI research itself potentially seems to call for precautionary action
- there is potential for significant human loss (e.g. from termination shock)
- threshold likelihood - very high with lock-in being more likely with R+D