This accessible volume provides readers - whether students new to the field or just interested members of the lay public - with the essential ideas of the origins of humans using a minimum of jargon and mathematics. Concepts are introduced in a progressive order so that more complicated ideas build on simpler ones, and each is discussed in small, bite-sized segments so that they can be more easily understood. Human Origins 101 enables students and the general public to understand the basic concepts underlying our knowledge of our evolution as a species.