What are the things that move us as human beings? In this episode Paul and David cover a broad range of "hot" topics (having to do with emotion and motivation), including evolutionary theory, disgust, sexual desire, morality, and how much money it would take for us to spit on a picture of someone we love.

Read the book that inspired the podcast: "Psych: The Story of the Human Mind" [amazon.com]

Email us with your psychology questions for a future episode!: [email protected]