How degrees of freedom and effect size determine the usefulness of a statistical study.

The Ghostbusters are in a library, searching for a ghost that haunts the building. Using the clues the ghost left behind, they successfully locate her.

Henry Hudson searched for the Northwest Passage, a direct route from Europe to Asia by boat. He dedicated his life to finding the passage but never did.

This clip explains the history of cookbooks, which paved the way for literature that guides people while cooking. This innovation changed the culinary arts because people were able to create delicious dishes by reading and following recipes.

Charlie explains how the suspect stole money using a pyramid scheme. He explains what a geometric progression is.