What makes canning last longer than refrigeration? Learn more on this Moment of Science.
It may come as a shock to learn that some skin based bacteria is actually good for you. You might want to rethink all that hand cleansing.
Back when most folks relied on an icebox to cool food, a block of ice was a precious commodity.If you put hot food in the icebox the ice might melt, and by the time the ice truck came through the neighborhood again all your food may have spoiled.