Then and Now
Celebrate 100 years of The World Book Encyclopedia by taking a look at the world in 1917 compared to today.

From Soup to Strawberries: 1917 World Book Preserved Them All

When we take a can of soup off a store shelf, we don’t usually think about the temperature the soup needed to reach as it was canned to be sure it was safe to eat. In our 21st-century world, most of us think of food preservation as something done in a factory, using machines attended by workers in white coats.