The first lecture examines how our modern diet and lifestyles have strayed from evolution's course.
Facing the challenge of population aging, Dr. Diamond asks what traditional societies can teach us, observing the self-confidence of their young people and the active roles of elders in communities.
Jared Diamond examines how warfare differs between tribes and between modern states, and looks to traditional societies for clues on how to avoid conflicts with our neighbors.
In his closing lecture of the series, Jared Diamond examines how religious beliefs evolved, and invites us to consider the benefits which religion has brought to humanity.