For 35 Australian dollars (about 27 U.S. dollars), customers of Sydney-based Easy Being Green can offset a year's worth of carbon emissions linked to their dogs, from trips to the vet to, yes, breaking wind.

Making your cat carbon neutral for a year costs U.S.$6, while U.S.$16 offsets two years of flatulence from that special someone.
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Company spokesperson Murray Hogarth concedes that the "flatulence cards" fall on the "gimmicky" side of the company's otherwise serious product line, which is designed to help consumers and small businesses address greenhouse gas emissions.