Editor’s note: This is your weekly installment of images from Douglas Gayeton and Laura Howard-Gayeton’s Lexicon of Sustainability. We’ll be running one image every Friday this winter, so stay tuned. If you have your own sustainability terms, you can add them yourself to the Lexicon of Sustainability.

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We live in a world of dwindling natural resources. The principle of sustainability offers us a road map for managing what we have left. Yet as we attempt to put our world back in balance, we’ve seen the term “sustainability” grossly misused, its meaning devalued, hijacked, turned into hollow sounding marketing jingles.