A by-product of Greek yogurt, called acid whey, is causing a world-wide toxic waste problem, and scientists are scrambling to find a way to fix it.
For every four ounces of milk used in the production of Greek yogurt, only one ounce becomes creamy, edible yogurt. The other three ounces transforms into acid whey, a fast-growing pollution problem.
According to a report published on Modern Farmer, acid whey, a thin and runny liquid, is highly acidic and can’t be poured back into the ground – such a disposal method is illegal.
If poured into a waterway, or sewer, acid whey has the potential to deplete water oxygen levels, which can kill thousands of fish.
The $2 billion Greek yogurt industry, which in New York alone produced 66millions gallons of acid whey in 2011, is still trying to figure out a good way to dispose of the toxic by-product.