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In page Planetary management:

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The term has been around in science fiction novels since the 1970s.[citation needed] In 2004, the International Geosphere-Biosphere Programme published "Global Change and the Earth System, a planet under pressure."[3] The publication's executive summary concluded: "An overall, comprehensive, internally consistent strategy for stewardship of the Earth system is required". It stated that a research goal is to define and maintain a stable equilibrium in the global environment. In 2009, the planetary boundaries concept was published in the science journal Nature. The paper identifies nine boundaries in the Earth system. Remaining within these nine boundaries, the authors suggest, may safeguard the current equilibrium.