Understanding sustainability is essential for anyone working with young people – whether as trainers, educators, researchers, or policymakers. Sustainability means maintaining the conditions that make life on Earth possible. While it’s often described as having three dimensions – social, economic, and environmental – the environmental one is the foundation of the others. Without healthy ecosystems, neither a stable economy nor a just society can exist, as both depend on nature’s balance and resilience.
Sustainability is much more than dealing with climate change. Scientists have identified nine planetary boundaries that define Earth’s safe operating space, and more than half of them have already been exceeded. These include biodiversity loss, soil degradation, freshwater depletion, and ocean acidification, among others. Climate change is only one piece of the puzzle. True sustainability requires systemic thinking – recognizing the interconnectedness between human activities, societal systems, and the natural processes that sustain life.