At a time when ecological destruction is more dire than ever, the work of protecting the planet depends on dreamers just as much as of scientists, activists, public officials and business leaders. Earth Day, when millions of people voice support for environmental causes, is the perfect time to recognize this. While it’s critical to wrestle power away from those who believe that corporate profits are all that matter, we won’t achieve a sustainable, just future without serious attention to imagining a different kind of world. That’s why it’s great to see artists playing an increasingly active role in the climate justice movement today. What bold blueprints for a green planet will arise if we unleash the full power of our idealism and ingenuity?