| http://www.w3.org/ns/prov#value | - Paul Moser, Penn State???s superintendent of steam services, said that the conversion and plant upgrades are a critical part of our greenhouse gas reduction plan. ???The use of natural gas in our combined heat and power system is a highly efficient, low-carbon solution that is considered environmentally friendly by all major environmental groups including the Sierra Club, Greenpeace and the Natura
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