A couple years back, the state of California declared that a caramel coloring agent, 4-methylimidazole (or 4-MEI), was a carcinogen and said that any beverages containing certain levels of 4-MEI would have to carry a warning label. With the most populous state in the nation effectively telling them to find another coloring agent, both Coca-Cola and Pepsi promised to change their respective formulas. But while Coke has made the switch nationally, Pepsi has only stopped using 4-MEI in California, says a new report. [More]
