The answer, according to the new Supply Chain Report 2012 from the Carbon Disclosure Project, is yes.

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But a new report issued by the Carbon Disclosure Project demonstrates that many companies, not just the usual suspects, are tackling it.

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Also, its product portal allows customers to report to GRI and to the Carbon Disclosure Project, so the approaches are complementary, said Zik.

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Apple also declines to provide key details about its manufacturing process to the Carbon Disclosure Project, which collects data about corporate greenhouse emissions via annual questionnaires that are publicly available.

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That's why the Carbon Disclosure Project is so important.

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At the annual meeting of the Carbon Disclosure Project--a non-profit investor organization devoted to greater transparency in greenhouse gas emission statistics--Sun released a set of open-source software tools that companies can use to track carbon emissions.

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