| http://www.w3.org/ns/prov#value | - Unfortunately, some land is not suitable for agriculture (rocky soil, mountains, deserts, lakes, cities, etc.) and some is needed for food production, timber production, recreation, living space and other uses.Thus it seems that we MUST do something to increase the efficiency of solar conversion if we are to have an economy that is sustainable in the long term and if we want to mitigate any negati
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