Collapse: How Societies Choose to Fail or Succeed

agriculture already American Anasazi animals archaeological archaeologists Australia became Bitterroot Bitterroot Valley bones cause century Chaco Canyon Chapter China climate change coast collapse colony consumers Copán costs countries cows crops damage decades decline deforestation developed Dominican Republic drought Easter Island economic environment environmental problems European export farmers farms fertility fish fisheries fjords forest Gardar global Greenland Greenland Norse growing Guinea Haiti Hence Henderson human hunting Hutu Iceland impacts increase industry Inuit irrigation Japan killed land largest livestock living logging Mangareva Maya middens miles million mining companies modern Montana native Norse North Norway numbers ocean overseas Pacific past societies Pitcairn plant Plate Polynesian production rates Ravalli County result River Rwanda seal sheep ships soil erosion species statues stone survive Third World Tikopia timber tion trade trees Tutsi Valley vegetation Vikings Vinland Western Settlement wood