pluto commodities

{:crux.db/id :commodity/Pu
 :common-name "Plutonium"
 :type :element/metal
 :density 19.816
 :radioactive true}

{:crux.db/id :commodity/N
 :common-name "Nitrogen"
 :type :element/gas
 :density 1.2506
 :radioactive false}

{:crux.db/id :commodity/CH4
 :common-name "Methane"
 :type :molecule/gas
 :density 0.717
 :radioactive false}