Ever wondered if those mountains of recycling really make you that much of a saint compared with that mysterious thing called the norm? If so, you should try a new online carbon calculator which compares your greenness with the national average in more than 50 countries, so you can feel as guilty (or smug!) as you deserve when your habits are compared with those of your neighbours.
Set up by Standard Chartered and developed by the Edinburgh Centre for Carbon Management (ECCM), the Greatest Race on Earth site hosts the first calculator of its kind, and is just as useful for people in the UK as it is for those in India, Kenya, China, Taiwan and the UAE as well as many other African, Asian and Middle Eastern cities. It's a nicely designed site too, so why not go and give it a whirl?