Geology is not simply the study of rocks, it is more accurately the study of Earth processes and Earth history. A common oversight is that geology also provides key insights into the evolutionary history and origins of life, the study of water resources, remediation of contaminated environments and Earths climate history. All of which represents a form of planetary evolution. Earth, like all other planets, are on a trajectory of semi-predictable and measurable evolutionary processes. Environmental science works on subjects like the understanding of earth processes, evaluating alternative energy systems, pollution control and mitigation, natural resource management, and the effects of global climate change. This means environmental science is an inherently interdisciplinary field that integrates physical, biological, chemical and information sciences to the study of the environment, and the solution of environmental problems. The link with geology is that it represents the physical aspect in the study of environmental systems.