NASA Goddard Space Flight Center, Wikimedia Commons, CC BY 2.0 Or, as Bucky would say: living within the confines of Spaceship Earth. We live on one planet, yet we consume 1.75 Earths’ worth of resources . This is unsustainable. As designers of the built environment, we must rethink how we retrofit and build to fit within our planetary limits. We are the first generation with enough data to understand and articulate what has been happening to our planet as a result of our collective behaviour. The Stockholm Resilience Centre has contextualized this data with the Planetary Boundaries framework. The PBF proposes science-based targets that define the limits of acceptable alteration to key Earth systems. The cumulative impacts of human activity must not surpass these targets if the Earth is to remain a safe operating space for future generations. Due to its universal reach, scale, and adaptability, the PBF is ideally suited to help us re-think design and c...