Avoiding the worst effects of climate change will require action. But it's hard to take action when you don't even know there's a problem. Around the world, only half of adults understand that humans are causing climate change through activities that produce greenhouse gases. But the picture is differ-ent for kids. Previous work has shown that children are more engaged and more knowledgeable than adults are about climate change. The question is, can we harness this to make a difference?