可持续发展是一种经济发展，涉及到规划的业务增长，同时注意保护自然资源。这些研究领域的主要目标是学习如何满足当今的经济需求，而无需牺牲资源往前走的可用性。

Courses are academic classes taught by qualified instructors that are intended to enhance participant’s knowledge of a given area or training in a particular discipline. Courses vary broadly in terms of length, size, content and duration.