1. How is Walmart deriving business value from its sustainability strategy? 2. Imagine that you are Andy Ruben or Tyler Elm, evaluating the progress of the electronics, seafood, and textiles networks. Which of these networks have been most successful in creating business value by reducing environmental impacts? What factors explain the success (or lack of success) of these networks? 3. How is Walmart motivating its suppliers to share information about and reduce the environmental impacts of products and processes? 4. As evidenced by Exhibit 12 in the case, Walmart's sustainability strategy has generally been profitable. However, at least one initiative described in the case benefits society and the environment, but apparently decreases Walmart's profits. Identify one or more such initiatives and imagine that you are the internal champion. How would you justify pursuing the initiative(s)?