Preservatives get a bad rap, but they're actually the key to keeping most of our shelf-stable food fresh and safe to eat. Here's how they work, and what you should know about them when you see them on your food labels.
Every creature, no matter how noble, is eaten by microbes in the end. It's the circle of life! So how do we explain the bits of plants and animals that make up a McDonald's burger, or a Twinkie? Why don't they rot? It turns out they're not as immortal as viral Facebook memes would have you believe.