Carbon Footprint

A little known fact about me... I graduated with a Bachelor of Architecture degree and one of my minors was Sustainable Environments.  I learned all about the environment, sustainability, global warming and all that jazz.  In one of my classes we had to calculate our carbon footprint.  At the time my carbon footprint was insanely low because I lived in a very small house with three girls, was rarely home to use the utilities and walked/bused everywhere.  Now that I travel so much, I wondered what my carbon footprint was now. Ahh... I'm sure it's horrible.  I've already been on 20 flights... and it's only April.  yikes!