Closer Look: How Pig Carcasses Can Become Treasure Instead of Trash

More than 16,000 dead pigs were found in tributaries of the Huangpu River, not far from Shanghai, in eastern China, in March.

At the same time, scores of diseased pig carcasses were also found miles away in Liuyang River, in the central province of Hunan. The massive number of dead pigs discovered nationwide caused great public concern.