In a natural sciences academic program, many branches of the field might be explored in depth with the goal of observing and learning about nature. Some of these branches may include astronomy, biology, physics, ecology and chemistry.

A PhD is a highly advanced degree that helps graduates become experts within a field. Earning this degree may help students be better qualified for their chosen careers as well as any other professional pursuits they may have.

Part-time learning allows one to obtain a degree or qualification even if one cannot attend school on a full-time basis. One can learn at one's own pace, gradually accumulating credits that count towards a final qualification.