Those interested in learning about the human body and human diseases may find programs in human biology fascinating. As a general study of the form and function of the body and its internal organs, classes in human biology can provide students with a basic understanding of physiology and disease.

The PhD is a doctoral degree, specifically called a "doctor of philosophy" degree. This is misleading because PhD holders are not necessarily philosophers (unless they earned their degree in philosophy!). That said, PhD recipients are able to engage in thought experiments, reason about problems, and solve problems in sophisticated ways.

Online or distance learning refers to the use of electronic media and information and communication technologies (ICT) in education. With online learning, one can access education at any time and from any location with an available internet connection.