1. What environmental liabilities should polaroid accrue in its statements? How should they be calculated? What information do you need to make the calculation? 

2. Should Polaroid incorporate environmental costs into its product costs? If not, why not? If so, how? What type of costs would you include?

Those are questions from HBR study case: Polaroid:  Managing Environmental Responsibilities and their Costs. I have no idea how to start answering those questions especially the first one: