| http://www.w3.org/ns/prov#value | - troleum or coal or other non-renewable resources are used in the production of a lot more than just plastic (although admittedly it is different, since plastic is made from petroleum), so where is the difference, really?So...does anyone have any thoughts, or sites, or calculators to offer here? (I am sending a note to Beth at My Plastic Free Life; I would love it if she felt like weighing in...) Any
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