With the possibility of a job looming (I finally got an interview for a contract gig somewhere), I was thinking about my commute to the client location and how much carbon I'd be emitting.

The commute is about equal to the average MPG that my car gets in morning traffic, so I knew I could estimate it at 2 gallons a day. I Googled for a figure on the emissions from a gallon of gas and found the official EPA estimates. I was shocked, because they said each 8-pound gallon of gasoline burned creates 19.4 pounds of carbon dioxide (CO₂).

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