| http://www.w3.org/ns/prov#value | - It also doesn???t hurt to make sure you???ve read the background stuff: John Muir, Thoreau, Aldo Leopold, Rachel Carson, and philosophy, particularly ethics, including work by Peter Singer, (???the Life you Can Save,??? for context (the book ???Mountains Beyond Mountains??? by Tracy Kidder), as well as any work that answers the question: ???how ought we to live???? You should subscribe to Grist (g
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