As more companies report greenhouse gas emissions, the standards they follow are coming under sharper scrutiny amid criticism that they make the companies seem greener than they are.
The Greenhouse Gas Protocol, a coalition of environmental groups and businesses, developed what have become the de facto standards for companies to disclose the carbon footprints of their operations, energy use and products, categorizing them as scope 1, 2 and 3 emissions.
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This post first appeared on wsj.com
