Additional carbon footprint savings will come from reduced office energy consumption, roadway repairs, urban heating, office construction, business travel and paper usage (as electronic documents replace paper).

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Certainly, the simple addition of bananas to the Starbucks mix seems to be working more, er, smoothly than the previous big innovation, the hot breakfast sandwich, which required bulky additional equipment and confused customers and baristas alike as to where the sandwich should change hands after heating.

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