According to a new report, the average commuter in NYC emits about 1,750 pounds of CO2 each year, making New Yorkers some of the greenest commuters in the country. High five! But if you want to know how much your commute is contributing to civilization's imminent doom, Transportation Alternatives has added a handy carbon calculator to their Rolling Carbon website. Simply type in the distance you commute and your mode of transport, and the machine tells you how guilty or self-righteous you should feel! So if you're an SUV driver residing 10 miles from work, you emit 32 pounds of carbon dioxide every day. To offset all that carbon, you would need to plant 46 trees every year. Or you could just stop being such a tool.