Eco-Age was commissioned by C40 (a network of the world’s megacities committed to addressing climate change) to design, write and produce a book which tells the stories of how the mayors of six of the world’s leading cities are working together, under the auspices of C40, to address climate change to help create a sustainable future for all. The book was produced in-house at Eco-Age, in close collaboration with C40 for the sixth biennial C40 Mayors Summit in Mexico City in December 2016. The aim of this work is to raise the profile of mayors who are successfully considering social equity and climate action in an integrated way to inspire other cities and show other mayors how to make the case for and deliver inclusive climate action. I created a unique and sustainably produced book, printed on FSC certified paper, which is also recyclable. I also created comprehensive, supporting digital content and a global strategy for social media.