The integrated systems that are the basis of the planet’s natural biogeochemical cycles, from carbon to nitrogen to water and beyond, are chemical cycles and chemical processes that are impacted by the human interferences and interactions with these cycles.  Human chemistry must be designed such that there will be no perturbation of the natural biogeochemical cycles and their interlinkages. Through thoughtful consideration of human material and energy utilization, there can be a preservation of the critical natural cycles essential to the preservation of life and all of its diversity on the planet.