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It may be a bit like secret handshakes in human societies.
He traces the proximate causes--the development of deadlier weapons technologies, immunity to germs, superior metal working, and writing systems--to the ultimate cause of the way food production varied in human societies and then looks at geographic variations and impediments that affected food production and the spread of technological innovation in all regions of the world.
Such innate propensities, in Wilson's view, underlie certain widespread or universal features of human societies.
NCAR is recognized for its scientific contributions to the understanding of the earth system, including changes in climate and atmospheric composition, Earth-Sun interactions, weather formation and forecasting, and the impacts of all of these components on human societies.
Ethnocentrism, he argues, has existed in some form in all human societies since the beginning of time.
Only in the last few millennia have human societies begun to exceed, in numbers of individuals and degree of complexity, the societies of ants, termites, and corals," Richerson contends.
In its work, the Foundation seeks the development of healthy individuals and effective communities; peace within and among nations; responsible choices about human reproduction; and a global ecosystem capable of supporting healthy human societies.
Freud -- and many scholars in his wake -- also erred in assuming that all human societies retain explicit taboos against incest within the immediate family, contends anthropologist Nancy W.
CI is currently working on projects in more than 30 countries on four continents to protect global biodiversity and demonstrate that human societies can live harmoniously with nature.
Indeed, says Jacobs, anthropological research indicates that in most human societies, men engage in polygamy and range over larger territories higher than women on tests of spatial ability, but scientists have not studied human sex differences in relative hippocampal size.
Conservation International works in 27 countries to protect global biodiversity and demonstrate that human societies can live harmoniously with nature.
Conservation International works worldwide to protect global biodiversity and demonstrate that human societies are able to live harmoniously with nature.