Iris and Cathon are shocked to discover how big and heavy the first microwave oven was. Turns out that inventing it involved melting a bar of chocolate.

Cathon bakes Iris a very special kind of bread for her birthday, and pretty soon the two friends have gone down the rabbit hole, in search of the origins of bread. They even tell the tale of a whole army sculpted from bread.

Cathon proudly shows off her new glasses. Iris is at a loss for words—she’s speechless with admiration. Where do eyeglasses even come from, and how did people first get them to stay on their noses?