Environmental Systems and Societies · Case studies
ECS.11 — The Montreal Protocol and the ozone hole
Environmental Systems and Societies · SL / HL · syllabus-mapped notes
Overview
The great environmental success story: how the world identified the ozone hole and phased out the chemicals causing it.
Systems and sustainability angle
A stratospheric equilibrium tipped by human chemicals, then allowed to recover: the planetary boundary that was not crossed.
Management and response
How the Montreal Protocol actually worked: binding phase-outs, funding for developing countries and trade rules.
HL lens angle
Environmental law in action: why this treaty succeeded where others have struggled.