The climate emergency is a source of anxiety for many young people. Images of drought, heat waves, wildfires, storms and flooding are increasingly appearing in the media. Today's children stand to be the recipients of our legacy of climate change, while not feeling empowered to do anything about it, so perhaps it is no wonder they are anxious. Teachers should be helping children to understand what causes climate change, its effects and what can be done to prevent further damage (as well as to mitigate the effects of the damage already done). Alongside this, educators need to give children the tools and confidence to help them make a difference where they can. In this article, professional engineer and STEM educator Caroline Alliston presents her ideas to help primary teachers deliver a comprehensive curriculum-linked programme on climate change and sustainability without the need to have a detailed knowledge of the subject.