Global cooperation is needed because climate change is a transboundary global problem: greenhouse gases mix throughout the atmosphere, so emissions from one country affect ecosystems and societies everywhere. No state can avoid catastrophic climate change through national action alone.
Level: SL and HL: Subtopic 6.3: Climate change, mitigation and adaptation
Why Cooperation Is Essential
Climate change resembles a tragedy of the commons. The atmosphere is shared, but countries may benefit from fossil-fuel use while spreading environmental costs globally. They may delay action or rely on others, creating a free-rider problem.
International agreements coordinate mitigation: reducing greenhouse gas emissions and increasing carbon sequestration. Shared targets, reporting systems, climate finance and low-carbon technology transfer make collective action more effective.
| Reason for cooperation | Climate-risk reduction |
|---|---|
| Greenhouse gases cross borders | Coordinated cuts protect the shared atmosphere |
| States may free-ride | Common commitments improve accountability |
| Resources are unequal | Finance and technology support lower-income states |
| Impacts cross borders | Shared monitoring, forecasting and adaptation improve resilience |
| Responsibility and vulnerability differ | Negotiations can address equity and environmental justice |
The Paris Agreement, adopted in 2015, illustrates cooperation. Countries submit nationally determined contributions and periodically strengthen them. However, effectiveness depends on national implementation; collective promises do not guarantee adequate emissions reductions.
Cooperation also supports adaptation, which reduces vulnerability to unavoidable impacts. Wealthier states can fund drought-resistant agriculture, coastal protection and early-warning systems where responsibility for emissions is low but vulnerability is high. This addresses differentiated responsibility and environmental justice.
Exam Technique
For an IB ESS explain question, link each reason to a consequence: shared atmosphere, free-riding, inadequate reductions and increased risk. For discuss or to what extent, weigh benefits against conflicting national interests, weak enforcement and unequal finance, then give a supported conclusion using named evidence.