More progressive environmental protection had it start in the 1960s and 1970s with major international programs such as the United Nations Conference on the Human Environment in 1972, the Environment Committee of the OECD in 1970, and the United Nations Environment Programme of 1972.
更多自然保护进步在二十世纪六十年代和七十年代展开，主要国际项目有1972年联合国人类环境大会，1970年经济合作与发展组织的环境委员会，1972年的联合国环境署等。