The rapidly worsening climate, nature and inequality crises confront us with an existential challenge. Unless we reverse greenhouse gas emissions and restore nature, temperatures will rise and ecosystems degrade to a point where large parts of the planet will become unliveable. This will not be felt equally: and it will exacerbate other forms of injustice and inequalities in countries of all incomes, for example through its disproportionate impact on women, Indigenous communities and the poor. The urgency of the interconnected existential threats we face requires changes in how we govern our societies and economies. We share one solitary, fragile planet. We will all suffer the consequences of inaction. Yet humanity is struggling to put aside individual interests and act and govern in our common interest.