Bernard Castelein / Old pine trees at sunrise in mist {Pinus silvestris} Belgium

Juergen Freund / Newly harvested Mangrove timber getting cleaned in the sea. The red bark has been taken off causing an orange red tint in the shallow water. Raja Ampat, West Papua, Indonesia, February 2010

Ashley Cooper / 12th century grain store or Agadir at the Berber village of Tizgui, Anti Atlas mountains, Morocco, North Africa. April. 2012.

Ashley Cooper / Greenhouse made from waste plastic drinks bottles in the community garden at Mount Pleasant Ecological Park, Porthtowan, Cornwall, UK.

Ashley Cooper / Greenhouse made from waste plastic drinks bottles in the community garden at Mount Pleasant Ecological Park, Porthtowan, Cornwall, UK. September 2013.

Jussi Murtosaari / Common shag (Phalacrocorax aristotelis) carrying nest building materials, Norway, April.

Ole Jorgen Liodden / Barn swallow (Hirundo rustica) in mud collecting nest building materials, with wings outstretched backlit, Svalbard, Norway, June.

David Woodfall / Building materials in flood water outside new home during February 2014 floods. Surrey, England, UK, 16th February 2014.

David Woodfall / Building materials in flood water outside new home during February 2014 floods. Surrey, England, UK, 16th February 2014.

Pat Tuson / Allotment shed made from recycled materials, with a Forsythia shrub to the left, Manor Garden Allotments, Lea Valley, London Borough of Hackney, UK. These allotments were destroyed to make way for the...

Pat Tuson / Allotment shed made from recycled materials, with a Forsythia shrub to the left, Manor Garden Allotments, Lea Valley, London Borough of Hackney, UK. These allotments were destroyed to make way for the...

David Woodfall / Garden with building materials during the February 2014 floods, Upton upon Severn, Worcestershire, England, UK, 9th February 2014.

Roland Seitre / Chief's traditional hut, Ouvea, Loyalty Islands Province, New Caledonia, August 2012.