I’ve always been fascinated by homing pigeons. A homing pigeon is a type of domestic pigeon (Columba livia domestica) that is bred to find its way home, often from remarkably long distances. If it’s carrying a message, it’s called a… Read More
The ancient Greeks and Romans knew how to refrigerate food. Snow was transported from mountain tops and packed into a "snow cellar," which compressed it into ice blocks. It remained frozen for months.
source: Don Wulffson, The Kid Who Invented the Popsicle