Terry Whittaker / 2020VISION / Electricity pylon and information board on Rainham Marsh RSPB Reserve, Thames Futurescapes Project, Essex, UK, January 2011

Wild Wonders of Europe / Presti / Battered sign showing the information about the area around Durankulak Lake, Bulgaria, February 2009

Gavin Hellier / Underground railway entrance sign, London, England UK, Europe

Gavin Hellier / Signs infront of the Royal Enclosure, Fasiladas' Palace, Gonder, northern Ethiopia 2005

Gavin Hellier / Street signs in Grand-Case on the French side, St Martin, Netherland Antilles, Leeward Islands, Lesser Antilles, Caribbean, West Indies 2008

Gavin Hellier / Place signpost in the Dutch capital of Philipsburg, Netherlands Antilles, St Martin, Leeward Islands, Lesser Antilles, Caribbean, West Indies 2008

Gavin Hellier / Low flying aircraft warning sign at Maho Beach, St Martin, Leeward Islands, Lesser Antilles, Caribbean, West Indies 2008

Gavin Hellier / Lake Louise sign, Lake Louise, Banff-Jasper National Parks, Alberta, Canada, 2007

Gavin Hellier / Boston Waterfront Marina sign, Boston, Massachusetts, USA 2009

Gavin Hellier / Low angle view of traffic sign and skyscrapers, Potsdamer Platz, Berlin, Germany, 2007. As was the case in much of Berlin, many of the buildings around Potsdamer Platz were turned to rubble by air rai...

Gavin Hellier / Welcome to Boston sign, Boston, Massachusetts, USA 2009

Gavin Hellier / Welcome to Boston sign, Boston, Massachusetts, USA 2009

Gavin Hellier / Modern futuristic style subway station, Berlin, Germany 2009

Staffan Widstrand / Warning sign for Polar Bear (Ursus maritimus) Svalbard, Norway

Wild Wonders of Europe / Muñoz / Welcome sign to Campanarios de Azaba Biological Reserve, a rewilding Europe Area, Salamanca, Castilla y Leon, Spain

Anup Shah / Celebes / Black crested macaque (Macaca nigra) sub-adult male sitting on a National Park sign, Tangkoko National Park, Sulawesi, Indonesia.

Wild Wonders of Europe / Widstrand / Land mine warning, as result of war activity, Velebit Nature Park, Rewilding Europe area, Velebit mountains, Croatia June 2012

Pat Tuson / Walk to School banner, Highbury, London Borough of Islington, UK

Pat Tuson / Sustainable Living tent, Camden now London Green Fair, Regents Park, London UK June 2012

Pat Tuson / Scrap Metal Yard behind red painted gate Highbury, London Borough of Islington, UK

Pat Tuson / Scrap Metal Yard behind red painted gate Highbury, London Borough of Islington, UK

Pat Tuson / Recycling Centre direction sign against sky, Southwark Council, London, UK

Pat Tuson / Go Vegan banner at the Climate Change March London, UK

Pat Tuson / Go Vegan banner at the Climate Change March , London, UK

Pat Tuson / Lady with pushchair looking at direction sign to Islington Farmers Market, London UK

Pat Tuson / East India Dock Basin now an urban wildlife reserve with interpretive boards in foreground and DLR train crossing in front of modern buildings, East London, UK

Pat Tuson / 20 mph traffic speed limit zone sign against sky, London, UK

Ben Hall / 2020VISION / Family walking down path with information sign about reedbeds in forground, Brockholes Nature Reserve, Lancashire, England, UK, July.

Philippe Clement / Portland Bill Lighthouse and stone signpost for the coast path on the Isle of Portland along the World Heritage Jurassic Coast, Dorset, UK, November 2012

Philippe Clement / Stone signpost for coastal footapth at Durdle Door near Lulworth on the Isle of Purbeck, Jurassic Coast World Heritage Site, Dorset, UK

Wild Wonders of Europe / Widstrand / For sale sign in Douro region, land abandonment, rewilding project, Portugal, May 2011

Wild Wonders of Europe / Widstrand / Grey wolf (Canis lupus) sign at Poloniny National Park, Slovakia, February 2011

Enrique Lopez-Tapia / Zanzibar red colobus (Piliocolobus kirkii) two colobus crossing the road that bisects the forest Jozany, with sign that warns of the danger of collision with the colobus, Jozany Forest, Zanzibar. Hig...

Enrique Lopez-Tapia / People celebrating at Mount Kilimanjaro's summit at 5895m altitude, Africa's highest point, Tanzania, October 2008

Enrique Lopez-Tapia / Board indicating Uhuru peak on Mount Kilimanjaro, Africa's highest point at 5895m altitude, Tanzania

Mark Carwardine / Information sign for watching Southern right whales, Western Cape, South Africa

Oriol Alamany / Information panel with photos showing the Angel Glacier historic retreat from 1915, 1922 and 1978, Jasper National Park, Rocky Mountains, Alberta, Canada

Peter Cairns / Adventure tourism being promoted in Skaftefjell National Park, Iceland, 2011

Enrique Lopez-Tapia / Way to Everest Base Camp sign, Khumbu Glacier, Sagarmatha National Park (World Heritage UNESCO). Khumbu / Everest Region, Nepal, Himalaya, October 2011.

Robin Chittenden / Chalara Ash dieback information sign in Ashwellthorpe Wood NWT Norfolk UK November 2012. Disease is caused by fungus (Chalara fraxinea)

Robin Chittenden / Chalara Ash dieback information sign in Ashwellthorpe Wood NWT Norfolk UK November 2012. Disease is caused by fungus (Chalara fraxinea)

Philippe Clement / Viewpoint with sign depicting a Red kite (Milvus milvus) for watching birds of prey at the Col du Soulor, Hautes-Pyrenees, Pyrenees, France, June 2012

Peter Cairns / 2020VISION / Information sign as part of Helvellyn Fell Care Day, Flora of the Fells conservation day. Helvellyn, Lake District National Park, Cumbria, September.

Rob Cousins / Woman looking at information panel on board walk on nature trail at La Capeliere in the Camargue Nature Reserve, France, Model Released, May 2012

Juergen Freund / Bat Crossing sign at Tolga Bat Hospital, Atherton, North Queensland, Australia. December 2007.

Christophe Courteau / Volcanoes National Park entrance sign with gorilla model, Kinigi Head Quarter where all Gorillas watching treks start from, elevation 2300m, Rwanda

Todd Mintz / Snowy owl (Bubo scandiaca) female resting on road sign with silos in background, Canadian prairie, Saskatchewan, Canada, March

Dave Watts / Southern cassowary (Casuarius casuarius) adult male crossing road near road warning sign, World Heritage National Park rainforest of the Wet Tropics, north Queensland, Australia, digital composite

David Tipling / 2020VISION / Entrance to Woodwalton Fen, Cambridgeshire Fens, UK, December 2011

David Tipling / 2020VISION / Information board at Holme Fen Nature Reserve, Cambridgeshire Fens, UK, December 2011

Roland Seitre / Information sign at Neale Junction Nature Reserve. Western Australia, September 2011.

Roland Seitre / Entrance and information signs for the Fathala reserve with cut-out giraffe, rhino and antelope. Toubacouta, Senegal.

Roland Seitre / Colobus Trust, Primate Conservation Research and Rescue information centre. Ukunda, Kenya, Africa.

Roland Seitre / Educational sign outside the sloth centre, outlining the migration of mammals over the isthmus of Panama. Aviarios del Caribe Sloth Refuge, Costa Rica, 2008.

Roland Seitre / Sign and logo of the Yellow-shouldered Amazon conservation project. Isla Margarita, Nueva Esparta, Venezuela, 2007.

Sandesh Kadur / An elephant road warning sign. Many roads were first built roughly following the well-worn pathways of migrating elephants. Today, numerous highways laden with lorries crisscross these ancient migrato...

Todd Mintz / Snowy owl (Bubo scandiaca) taking off from a road information sign at sunset, Scandiaca, Canada.

Nick Turner / Blackboard welcome information sign within Stroud Farmers Market, Stroud, Gloucestershire, UK, August 2011.

Nick Turner / Blackboard welcome information sign within Stroud Farmers Market, Stroud, Gloucestershire, UK, August 2011.

Nick Turner / Carrots (Daucus carota) with for sale information sign at Cirencester Farmers Market, Cirencester, Gloucestershire, UK, July 2011.

Nick Turner / Walkers welcome blackboard information sign on Winchcombe Way during the Walking Festival 2011, Tewkesbury, Gloucestershire, UK, May 2011.

Nick Turner / Information signs on the Winchcombe Way during the Walking Festival 2011, Tewkesbury, Gloucestershire, UK, May 2011.

Nick Turner / Close up of the Tarka Inn information pub sign on the The Tarka Trail cycle path, Devon, UK, March 2010.

Nick Turner / The Tarka Trail cycle path and Coastal Path information signs, Devon, UK, March 2010.

Nick Turner / The Tarka Trail cycle path and Coast Path information sign, Devon, UK, March 2010.

Nick Turner / The Tarka Trail cycle path and Coast Path information sign, Devon, UK, March 2010.

Nick Turner / Cotswold Way National Trail waymarker information sign and gate covered in snow, Coaly Peak, Gloucestershire, UK, January 2010.

Nick Turner / Cotswold Way National Trail information waymarker sign covered in snow, Coaly Peak, Gloucestershire, UK, January 2010.

Nick Turner / Belas Knap Long Barrow ancient monument information sign, Winchcombe, Gloucestershire, UK, June 2009.

Nick Turner / Coast Path information sign for Port Clais and St Justinian, Pembrokeshire, Wales, UK, June 2009.

Nick Turner / Dangerous currents warning information sign at Caerfai Bay on the Pembrokeshire Coast Path, Wales, June 2009.

Nick Turner / Lifeguard warning information sign on the Pembrokeshire Coast Path, Wales, UK, June 2009.

Nick Turner / Information sign for Ramsey Island boat trips, Pembrokeshire Coast Path, Wales, June 2009.

Nick Turner / Pembrokeshire Coast Path information sign, direction to Port Clais and St Justinian, Wales, UK, June 2009.

Nick Turner / Pembrokeshire Coast Path information sign, direction to Port Clais and St Justinian, Wales, UK, June 2009.

Nick Turner / Coast Path information sign to Port Clais and St Justinian, Pembrokeshire, Wales, UK, June 2009.

Nick Turner / Waymarker information sign at Durdle Door on the South West Coast Path National Trail, Dorset, UK, May 2009.

Nick Turner / Waymarker information sign at Durdle Door on the South West Coast Path National Trail, with coastline in the background, Dorset, UK, May 2009.

Nick Turner / Waymarker information sign at Durdle Door on the South West Coast Path National Trail, Dorset, UK, May 2009.

Nick Turner / South West Coast Path National Trail waymarker information sign, near Durdle Door, Dorset, UK, May 2009.

Nick Turner / Pick your own fruit information signs for organc apples and pears along road next to bus stop, Forest of Dean, Gloucestershire, November 2008,

Nick Turner / Pick your own fruit information signs for organc apples and pears, Forest of Dean, Gloucestershire, November 2008.

Nick Turner / Pick your own fruit information signs for organc apples and pears, Forest of Dean, Gloucestershire, November 2008.

Nick Turner / Environmentally friendly Bio washing-up liquid refill information label, September 2008.

Nick Turner / Non-recyclable bins with information sign, for landfill waste at a recycling centre, Gloucestershire, UK, February 2008.

Nick Turner / Recycling percentage rates information sign at a recycling centre, Stroud, Gloucestershire, UK, February 2008.

Nick Turner / Recycling percentage rates information sign at a recycling centre, Stroud, Gloucestershire, UK, February 2008.

Nick Turner / Light bulb recycling information sign at a recycling centre, Stroud, Gloucestershire, UK.

Nick Turner / Mercury recycling information sign at a recycling centre, Stroud, Gloucestershire, UK, February 2008.

Nick Turner / Mobile phone recycling point at Pyke Quarry Recycling Centre, Stroud, Gloucestershire, UK, February 2008.

Nick Turner / Engine oil recycling information sign at a recycling centre, Stroud, Gloucestershire, UK, February 2008.

Nick Turner / Chemical disposal point information sign at a recycling centre, Stroud, Gloucestershire, UK, February 2008.

Alex Mustard / Information sign prohibiting the collection of tropical fish from any coral reef in Florida, USA, February 2011.

Inaki Relanzon / Wildlife crossing warning road sign and Injured wildlife contact number, Cape Otway, Great Otway National Park, Victoria State, Australia, September 2011.

Inaki Relanzon / Koala warning road sign, Cape Otway, Great Otway National Park, Victoria State, Australia, September 2011.

Inaki Relanzon / Fox poison warning sign attached to tree, Great Otway National Park, Victoria State, Australia, September 2011.