Don Bain and Michael Gillenwater discuss a personal carbon dilemma – should I fly or should I drive? A recent trip prompted Don to try 5 different on-line carbon calculators for air travel when trying to compare the carbon intensity of airline travel versus travel by auto. The carbon calculators gave surprisingly different results for the same air travel data.

Michael gives an overview of Radiative Forcing in the context of emissions from air travel.

Want a more scientific look into carbon calculators for air travel? We highly recommend Carbon Offsetting & Air Travel, Part 1: CO2-Emissions Calculations, by Anja Kollmuss & Jessica Lane.

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