Meaning of sustainable development
· Sustainable development = development that meets present needs without compromising the ability of future generations to meet their own needs.
· In IB Economics, always link sustainability to the long-term balance between economic growth, social well-being and environmental protection.
· Sustainable development is about using resources responsibly so growth today does not create larger future costs.
· A strong exam point: growth is not automatically development if it causes resource depletion, pollution, climate damage or wider inequality.
· The core tension is between short-run economic gains and long-run sustainability.
· Good examples to mention: deforestation, overfishing, fossil-fuel-based growth, water scarcity, soil degradation.
· In evaluation, discuss trade-offs: higher output/employment now vs environmental damage and lower future living standards.
This diagram shows sustainability as the overlap between society, economy and environment. It is useful for exam answers because it visually reinforces that sustainable development requires all three dimensions to be balanced, not just economic growth alone. Source
Sustainable Development Goals (SDGs)
· The Sustainable Development Goals (SDGs) are the 17 global goals set by the United Nations for achieving more sustainable and equitable development by 2030.
· They are integrated: progress in one area often depends on progress in others.
· In exams, use the SDGs as evidence that development is multidimensional, not just about GDP per capita.
· Key SDG themes include:
· No poverty
· Zero hunger
· Good health and well-being
· Quality education
· Gender equality
· Clean water and sanitation
· Affordable and clean energy
· Decent work and economic growth
· Industry, innovation and infrastructure
· Reduced inequalities
· Sustainable cities and communities
· Responsible consumption and production
· Climate action
· Life below water and Life on land
· Peace, justice and strong institutions
· Partnerships for the goals
· Strong exam link: the SDGs show that policymakers aim for economic, social and environmental objectives at the same time.
· When evaluating policy, ask whether it helps achieve multiple SDGs or improves one goal while harming another.
Why sustainable development matters in exam answers
· Sustainable development helps explain why a country can experience economic growth without achieving full economic development.
· It highlights that policies should improve living standards now while protecting future productive capacity.
· It is closely connected to equity, because environmental damage often harms the poorest groups most.
· It also links to interdependence: climate change, biodiversity loss and pollution are often cross-border problems.
· High-scoring answers often explain that unsustainable growth can reduce future food security, health outcomes, incomes and quality of life.
· Useful evaluation phrase: “A policy may raise real GDP in the short run, but whether it promotes sustainable development depends on its long-run social and environmental effects.”
HL only: relationship between sustainability and poverty
· Poverty and unsustainability often reinforce each other.
· People in poverty may rely on overusing local natural resources because they lack access to clean energy, finance, technology, education or secure jobs.
· This can lead to deforestation, soil exhaustion, water contamination and other forms of environmental degradation.
· At the same time, environmental damage makes poverty worse by reducing agricultural productivity, worsening health, increasing vulnerability to climate shocks and lowering income opportunities.
· Therefore, poverty reduction can support sustainability, and sustainability policies can support poverty reduction.
· Strong HL chain of reasoning: poverty → short-term survival behaviour → environmental degradation → lower future productivity/income → deeper poverty.
· Effective development policy should therefore pursue both: poverty alleviation and environmental protection.
· Good examples: investing in clean water, renewable energy, education, resilient agriculture and climate adaptation.
Common exam chains of analysis
· Unsustainable production → environmental damage → higher future costs → lower long-run growth/development.
· Climate change → lower agricultural output / health problems / infrastructure damage → more poverty and inequality.
· Investment in renewable energy / clean infrastructure / education / healthcare → better human capital and resilience → more sustainable development.
· Growth based on non-renewable resources may raise GDP now, but may be unsustainable if it causes resource depletion or large negative externalities.
· International cooperation matters because many sustainability problems are global, while poorer countries may lack the finance to respond alone.
Evaluation points to use in 10-mark and 15-mark questions
· Whether a policy is sustainable depends on its long-run effects, not only its short-run success.
· Policies may involve trade-offs between growth, equity and environmental protection.
· The effectiveness of sustainability policies depends on government capacity, funding, technology, institutions and international support.
· What is sustainable in one country may be harder in another because of different income levels, resource endowments and development priorities.
· The best policies often create double benefits or triple benefits: reducing poverty, improving equity, and protecting the environment.
Checklist: can you do this?
· Define sustainable development accurately and link it to future generations.
· Explain why the SDGs show that development is multidimensional.
· Analyse the HL-only two-way relationship between poverty and sustainability.
· Use examples to show the difference between economic growth and sustainable development.
· Evaluate a policy by considering economic, social and environmental effects in both the short run and long run.
Dave is a Cambridge Economics graduate with over 8 years of tutoring expertise in Economics & Business Studies. He crafts resources for A-Level, IB, & GCSE and excels at enhancing students' understanding & confidence in these subjects.
Dave is a Cambridge Economics graduate with over 8 years of tutoring expertise in Economics & Business Studies. He crafts resources for A-Level, IB, & GCSE and excels at enhancing students' understanding & confidence in these subjects.