Hog wild for pollution trading.
Murphy
Cait
C
D000818:Animals; D003132:Commerce / Q000639:trends*; D004785:Environmental Pollutants / Q000191:economics* / Q000600:supply & distribution; D006801:Humans; D007449:Investments / Q000639:trends*; D008372:Manure; D013458:Sulfur Dioxide / Q000191:economics / Q000600:supply & distribution; D013552:Swine; D014481:United States; D001335:Vehicle Emissions
D004785:Environmental Pollutants; D008372:Manure; D001335:Vehicle Emissions; D013458:Sulfur Dioxide