Cities play a unique and crucial role in reducing global greenhouse gas emissions. Making public transport more attractive and accessible, and sharing expertise among cities are two key ways to making urban areas more sustainable and liveable, say city leaders and experts.
Want to contribute to the fight against global warming? Start by changing what you put on your plate. This Earth Day, we look at some newfangled diets such as "climatarianism" and "reducetarianism" which you can adopt.
Controversial taxi company, Uber, recently launched a new statement of mission to reposition the business. Corporate Citizenship co-founding director Mike Tuffrey shows how others have succeeded and warns of the dangers.