Environmental sustainability is now a core theme in public political discussions, at the state and transnational levels. There is growing environmental concern about climate change which directly and indirectly affects other sectors of economic activity as well as human life. For this reason, international obligations concerning greenhouse gas emissions are increasing in number.

In this sense, Castilho International Legal Corporation advises companies from various sectors, bodies, and organizations, regarding licensing, certification, and compliance with the legal obligations at the level of Environmental Law.