Sustainable development is a type of economic development that involves planning for business growth while taking care to preserve natural resources. A primary goal of those studying the field is to learn how to meet today’s economic demands without compromising the availability of resources moving forward.  

Education in the United States is mainly provided by the public sector, with control and funding coming from three levels: state, local, and federal, in that order. The common requirements to study at a higher education level in United States will include your admissions essay (also known as the statement of purpose or personal statement), transcript of records, recommendation/reference letters, language tests

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.