Louis Pasteur is remembered for his remarkable breakthroughs in the causes and preventions of diseases. This clip shows his successful vaccination of animals and his interest in replicating it for humans.
Lucy and Ethel bake bread but put too much yeast. This clip can be used as an introduction to teaching about microorganisms such as yeast. It illustrates just how fast yeast grows and the role it plays in baking.
In an attempt to be scary, Double D dresses up as the bubonic plague for Halloween. Despite his hints, which include facts about the plague, Ed and Eddy are unable to figure out what his costume depicts.