GEOG 1265 Lecture Notes - Lecture 18: Keeling Curve, Pine Nut, Neolithic Revolution
13 Mar 2017
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Document Summary
Hunting and gathering: neanderthal (human relatives) diet, dna from teeth provided evidence about what they ate, 42,000 year old skulls from belgium woolly rhino and sheep dna, 50,000 years old fossil from spain pine nut, mushroom dna. Central america maize cultivation (maize = zea mays mays) teosinte the ancestor of maize (native of mexico: smaller than maize, single stalk, (teosinte = zea mays parviglumis, zea mays mexicana) Long term implications of the neolithic revolution: societal changes, settled communities urbanism, rise of political, religious, scientific, economic classes, social complexity, hydraulic civilization karl wittfogel. Impacts on human environment: change in diet more unhealthy, change in population distributions/concentrations more disease, environmental effects, forest clearance, soil erosion, habitat loss. Measurements at mauna loa by charles david keeling: rise in co2 in atmosphere is dramatic, increase in about 2ppm in a year, done in hawaii because of its isolation, keeling curve.
