From the books they left behind, we know that ancient people from all cultural and religious backgrounds feared that their enemies might poison their food. Our fear that our enemies might poison our food supply increased after airplanes were used as missiles to attack the United States on Sept. 11, 2001. That’s why food defense…

You, the consumer, are at the end of a long line of stops food makes before reaching your plate. Being able to trace this food back to its origins can be crucial to government and industry during a food-related recall or outbreak. But you may also want to know whether what you are about to…