One of the pluses of being a starving artist in New York City using public transportation. It reduces your carbon footprint. You can calculate your carbon footprint at www.carbonfootprint.com and find out ways to save money and reduce waste on their website. It's fun to see upfront how much of a carbon footprint you make. Mine is 5.45 tonnes a year, which is a little less than half the U.S. Average. It then lists ways you can offset your carbon emissions by linking you to Clean Energy funds, tree-restoration projects etc. So give it a shot, and perhaps you'll see that you're making more of an impact than you might think.

www.carbonfootprint.com