Environmental policy is the set of activities and procedures by which different levels of competence and organisation of the state or of business and non-governmental organisations seek to protect the environment and conserve nature, adopted and adapted by governments that are signatories to international agreements. The national environmental policy landscape has evolved from a linear, sectoral approach to provide specific services in the short or medium term, often depending on electoral cycles. This type of response is not always the most appropriate to address the complex and multi-sectoral challenges of sustainable development, whose time horizon spans generations and requires a sustained commitment beyond the 6 years of a governmental term. SD requires a three-pronged approach focusing on environment, economy and society, which goes against the traditional way of policy formulation and development. In Mexico environmental policy is legally established on the basis of the principles contained in Article 15 of the L.G.E.E.P.A.