The greenest city mayors take home the fight against climate change

An organic farmer turned politician, a woman with solar panels on her shed and a man who cycles in the snow - the city leaders who live green

With more than half of the world's population living in urban areas - responsible for up to 70% of greenhouse gas emissions - it's vital that cities and their leaders commit to environmental policies. Ahead of COP 21 in Paris, a new report from C40 Cities shows that mayors of some of the world's greenest cities are already making them more resilient and are even achieving economic growth by investing in sustainable development. As for the mayors themselves, tackling climate change is not just part of the job; from turning vegan to boycotting baths, city leaders are taking the fight home.