There are UN-sponsored international laws to deal with issues like climate change, ozone layer depletion, protection of biological diversity, protection of international watercourses, protection of endangered species, regulation on persistent organic pollutants.

联合国发起的国际法处理气候变化、臭氧层损耗、保护生物多样性、保护国际水道、保护濒危物种、管制持久性有机污染物等问题。