(Reuters) - Staff at an influential corporate climate action group whose board announced a plan to allow companies to offset greenhouse gas emissions from their supply chain with carbon credits has now found such offsets are largely ineffective, a confidential preliminary draft reviewed by Reuters shows.
At stake is the growth of the still nascent market for voluntary carbon offsets. While they are used by some of the world's biggest companies, including Microsoft (MSFT.O), Salesforce (CRM.N) and Amazon.com (AMZN.O), the size of the market remains small at around $2 billion.
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