If you want to learn about the health of a population, look at the air they breathe, the water they drink, and the places where they live. Father of western medicine but not disconnected from other traditions. Anthropo (human) + cene (describing epoch in geologic time) New period after or within the holocene (the last period), began approx. 10,000 yrs ago with the end of the last glacial period. During this current geologic time period, human influences as been really profound: anthropogenic effect. Earth"s most recent geologic time period characterized by human-influence- anthropogenic effects. Idea of anthropocene has become more popular in the mainstream. Overwhelming evidence: atmospheric, geologic, hydrologic, biospheric and other earth system processes altered by human activity. Ecology: study of interactions among organisms and their environment; models date back to. In the ecological model health is seen as . Health = the ability of an organism to maintain balance with environment; relative freedom from pain and disability.