Is Wal-Mart turning over a new leaf? It looks like they're trying. According to The New York Times, Wal-Mart is on a mission to go green, developing a universal rating system that scores each of their products on its social and environmental impact — kind of like green nutrition labels. They apparently intend to go beyond the standard sustainability concerns, like emissions and water conservation, and actually delve into more complex questions, like "Did this T-shirt come from a cotton crop that was sprayed with pesticide?" and "Was excessive packaging used to ship these diapers?"

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