Cyril Ruoso / A harp is the traditional tool to clean Common eider (Somateria mollissima) down, collected on Lanan Island, Vega archipelago, Norway
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Cyril Ruoso / Common eider (Somateria mollissima) close up of down feathers, the quality of the little hooks makes the eiderdown the best insulator, Vega Archipelago, Norway June
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Cyril Ruoso / Margit cleaning down from Common eider (Somateria mollissima) with traditional harp tool whilst some dries in the sun, Lanan Island, Vega Archipelago, Norway June
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Eric Baccega / Nenet woman at entrance to reindeer fur covered tent. Yar-Sale district. Yamal, Northwest Siberia, Russia. April 2016.
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Eric Baccega / Nenet reindeer herders, eating bread, raw reindeer meat and tea inside reindeer skin tent. Yar-Sale district, Yamal, Northwest Siberia, Russia. April 2016.
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Doug Allan / Trans Alaska pipeline with insulated support structure, Fairbanks, Alaska.
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Adrian Davies / An 'eco' house roof, covered in grass, Switzerland. June.
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Philippe Clement / Building fitted with warm pitched roof insulation by installing insulating sandwich panels, Belgium, March 2019.
