McDonald’s promises to use only beef, coffee, fish, chicken, and cooking oil obtained from sustainable sources. Coca-Cola promises to achieve water neutrality. Unilever has set a deadline of 2020 to reach 100 percent sustainable agricultural sourcing. Walmart has pledged to become carbon...

Over the last few years, the financial sector has experienced its worst crisis since the 1930s. The collapse of major firms, the decline in asset values, the interruption of credit flows, the loss of confidence in firms and credit market instruments, the intervention by governments and central...