Photo via Earthwatch Guest blogger Caroline Chisholm is head of marketing and communications globally for Earthwatch . We all know the size of the footprints we leave behind. For the record, mine’s a size 8 (42), which is bigger than many I guess, but I’m tall and I need the

ballast or I’d fall flat on my face. My carbon footprint is another matter. In the U.K., the average person emits 10.92 tons of CO2 — you can almost double that… Read the full story on TreeHugger

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