The study of nursing focuses on prevention of illnesses and injuries, care of patients of all ages and the promotion of health. This subject is useful for anyone who wishes to be a nurse at hospitals, clinics, assisted living centers or other health institutions.

Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and comprises 30% of its land area.

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.