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Since owners of G5s don't need frequent flyer miles anyway, they'll soon have a morally rewarding way to flex their spending power. Early in 2008, Bank of America will launch the Visa Brighter Planet card, which aims to reduce its holder's "carbon footprint." Each dollar spent on the card earns a point that supports a variety of environmental organizations, and a thousand points will offset approximately one ton of carbon dioxide (the effect on global warming is similar to removing a car from the road for two months).