to make transformative change a reality, a crucial next step is to adopt a common and inclusive platform for change on a global scale. In other words, we need a planetary Tahrir Square . Social injustice and ecological crises must be recognised as inextricable parts of the same problem: our failure to share the world's resources in a way that benefits all people and preserves the biosphere. A universal call for sharing has the potential to unite both environmentalists and those campaigning for global justice, paving the way to a more just, sustainable and peaceful world.