Here's a riddle: What walks throughout Canada, weighs more than a Brit, but less than an American, and can help stop global warming? No, it's not Sasquatch. It's not Kyoto. Stumped? We'll give you a hint. It's the average Torontonian's carbon footprint! According to Zerofootprint, a not-for-profit environmental organization, the average Torontonian's carbon footprint sits at 8.6 tonnes per year—more than a fully-grown African elephant! Zerofootprint teamed up with the City of Toronto to......