| http://www.w3.org/ns/prov#value | - The answer is going to be new technology which absolutely reduces carbon dioxide and other greenhouse emissions.Exxon has made its oil refineries 37 percent more efficient since the 1970s, one example of how technology changes reduce emissions, Cirigliano said.But Peter Altman, of Austin-based Campaign Exxon Mobil, said Exxon's refinery efficiency lags the efficiency rates of other industries su
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