noun
environmental science
An interdisciplinary academic field studying the natural environment and human impact on it.
彼女は大学で環境科学を専攻している。
She is majoring in environmental science at university.
環境学 is a broader term for environmental studies, often including social and policy aspects, while 環境科学 emphasizes the natural science perspective.
Compound of 環境 (environment) and 科学 (science).