Climate change can slow or reverse development by damaging livelihoods, health, infrastructure and economic security. It weakens sustainability when meeting present needs reduces the environmental, social or economic opportunities available to future generations.
Development is multidimensional, not simply economic growth. Climate hazards can reduce income while worsening education, health and equality. In Pakistan, the 2022 floods affected approximately 33 million people and caused more than \text{US}\30\text{ billion}$ in damage and economic losses, according to World Bank assessments. Reconstruction therefore diverted resources from schools, healthcare and poverty reduction.
| Effect | Development and sustainability link | Contemporary example |
|---|---|---|
| Infrastructure damage | Destroyed transport, housing and energy systems reduce productive capacity and require costly rebuilding. | Pakistan's 2022 floods damaged or destroyed more than two million homes. |
| Food and water insecurity | Drought and changing rainfall reduce agricultural output and deepen poverty. | The 2020 to 2023 Horn of Africa drought worsened food insecurity in Somalia, Ethiopia and Kenya. |
| Unequal vulnerability | Lower-income groups often have less insurance, political influence and adaptive capacity. | Tuvalu faces sea-level rise despite contributing a tiny share of global emissions. |
| Policy transformation | Renewable energy and adaptation can create jobs while reducing future harm. | Kenya generated nearly 90% of its electricity from renewables in 2023, especially geothermal, hydro and wind. |
Climate change demonstrates interdependence: emissions produced in one state create cross-border consequences. Yet unequal responsibility and adaptive capacity make policy a question of power and justice, as lower-income states seek climate finance from wealthier states.
A common misconception is that climate change affects only environmental sustainability. It also shapes economic and social development through migration, debt, health risks and inequality.
For an IB Paper 2 response at SL or HL, apply the command term precisely. For evaluate, weigh harm against adaptation and green development, then reach a justified judgment using specific, contemporary cases.