Sustainability is the ability to meet the needs of the present generation without compromising the ability of future generations to meet their own needs. It’s a core principle of Environmental Systems & Societies (IB ESS), guiding how humans interact with natural systems. True sustainability balances environmental integrity, economic development, and social well-being — the three pillars of sustainable development.
Quick Start Checklist for IB ESS Students
- Memorize the Brundtland definition of sustainability (1987)
- Understand the three pillars: environmental, social, economic
- Learn real-world examples of sustainable and unsustainable practices
- Connect sustainability to resource management and systems thinking
- Revise with RevisionDojo’s IB ESS study tools and case-based learning
The Concept of Sustainability
At its core, sustainability recognizes that Earth’s resources — air, water, soil, and biodiversity — are finite. If used irresponsibly, these resources degrade, leading to ecological collapse. Therefore, sustainability promotes long-term environmental stewardship while ensuring social equity and economic stability.
In IB ESS, sustainability connects nearly every unit: from ecosystem services and natural capital to climate change, pollution, and energy use. It’s both a scientific and ethical framework for making decisions that minimize environmental impact while promoting human progress.
The Three Pillars of Sustainability
- Environmental Sustainability: Protecting ecosystems, reducing pollution, conserving resources, and maintaining biodiversity.
- Social Sustainability: Ensuring fair access to resources, education, and health while promoting cultural diversity and human rights.
- Developing systems that support growth without depleting natural or human capital — for example, investing in renewable energy and green technologies.
