It's the unsung essential of modern life. Canning is the method of a preserving and packaging food, without which civilization would never have ventured beyond the local food supply. It changed the way the world eats and revolutionized the food industry. There are self heating and self cooling cans, microwaveable cans, ozone safe aerosol cans and cans that store nuclear waste. We will explore where canning has been, where it is now and where it is going in the future.