| http://www.w3.org/ns/prov#value | - Renewable sources cannot provide the quantity or forms of energy needed to replace oil and gas. 2009 proven reserves of fossil fuels: Oil 51 x 1014 kWh Gas 43 x 1014 kWh Coal 54.5 x 1014 kWh Source ??? Energy Information Administration An estimate of the potential to maintain our civilization at its present level requires that we must know how much energy we use and how much energy we will need as
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