The Doughnut of social and planetary boundaries is a simple visualisation of the dual conditions – social and ecological – that underpin collective human well-being. The social foundation demarks the Doughnut’s inner boundary, and sets out the basics of life on which no one should be left falling short. The ecological ceiling demarks the Doughnut’s outer boundary, beyond which humanity’s pressure on Earth’s life-giving systems is in dangerous overshoot. Between the two sets of boundaries lies the ecologically safe and socially just space in which humanity can thrive.