This episode features:

-Were our ancestors cannibals?

-Why did people engage in human sacrifice?

-Is slavery still practiced today?

-Do we work more than people of the past?

-Is the world better than it used to be?

-Were our hunter-gatherer ancestors peaceful?

-The history of torture

-The history of slavery

-The history of infanticide

-Is school bullying on the rise?

-Has the world suicide rate been increasing?

-Has our treatment of animals improved or gotten worse?