Population

Why do people settle where they do? Why do populations move from one place to another? In Human Systems, students will appreciate the role that the physical characteristics of Earth have played in determining where and how people live, and explore the notion that where and how we live has a huge impact on our planet.

Journey of a Man answers the question, "Where do we all come from?" Today, some six billion people are spread across the planet. But there was a time-not so long ago-when the human species numbered only a few thousand and their world was a single continent: Africa.