McDonald's phased out polystyrene foam-based clamshell food containers in the 1990s, but continued to serve coffee and other hot beverages in cups made of the same non-recyclable material. Now, after a three-year pilot program, the company's switching to double-walled fiber hot cups at all 14,000 U.S. locations. As You Sow looks at whether the world's largest fast food franchise is going far enough in terms of environmental responsibility. Read More