Most food-wrap films just act as a barrier to bacteria, but don't actually kill the microbes. An experimental new film does exactly that, plus it changes color to show when food is spoiled. And what's ...

For many years, the vibrant yellow of Kraft Heinz’s iconic macaroni and cheese came from the artificial food colorings yellow no. 5 and yellow no. 6. In 2012, the company started searching for a ...