Coca-Cola and Cargill have teamed up to start marketing the sweetener, Stevia, in countries that allow it, places like Brazil and China. Europe and the U.S. do not allow it as a food additive although the U.S. permits its use as a dietary supplement. The FDA says companies have not produced evidence that the substance is safe; it considers Stevia an “unsafe food additive” and any product containing it to be adulterated. The entry on Stevia in Wikipedia explains most of what all this is about. Concerns about the safety of Stevia have not stopped Coca-Cola from filing 24 patent applications or petitioning the FDA for approval. Interesting, no?