It’s been exactly a year since Walmart’s historic launch of a Sustainability Index and other measures to assess suppliers and products and, remarkably, the sun still rises in the East and sets in the West. Most skeptics say there is less than meets the eye. A brief review: Last summer, Walmart announced that it would assess its suppliers on environmental and social criteria. It announced a Sustainable Product Index to “establish a single source of data for evaluating the sustainability of products,” the company said. Walmart said it would introduce the initiative in three phases, beginning with a survey of its more than 100,000 suppliers around the world. The survey includes 15 questions that “serve as a tool for Walmart’s suppliers to evaluate their own sustainability efforts. For more on where Walmart stands one year later, visit GreenBiz here.