Ashley Cooper / Climbers on the arete leading up from the Vallee Blanche to the Aiguille Du Midi above Chamonix, France. September 2014

Ashley Cooper / A sign about the Mojave desert tortoise (Gopherus agassizii) near Lake mead in Nevada, USA. September 2014

Ashley Cooper / Lions mane jellyfish (Cyanea capillata) washed ashore on a Northumberland Beach, England, UK. July 2014

Ashley Cooper / Girl looking at Lions mane jellyfish (Cyanea capillata), washed ashore on a Nothumberland Beach, England, UK. July 2014

Ashley Cooper / Warning Sign in burnt forest near Kinglake, one of the communities worst affected by the catastrophic 2009 Australian Bush Fires in the state of Victoria in which 173 people were killed. Victoria, Au...

Ashley Cooper / Collapsed coastal road near Skipsea, Yorkshire, England, UK. August 2013.

Ashley Cooper / Collapsed coastal road near Aldbrough, Yorkshire, England, UK, August 2013.

Ashley Cooper / Sign warning about dust during the 2012-2017 California drought, California, USA. September 2014.

Jeff Foott / Warning sign to cut down trees killed by Mountain pine beetle (Dendroctonus ponderosae) because of the fire hazard. Sign is near Dubois, Wyoming, USA. The crrent outbreak of mountain pine beetles ha...

Juergen Freund / Signs about sea level rise, along floodplains of Arnhem Highway, Northern Territory, Australia.

David Woodfall / Flood warning sign during January 2014 flooding, Somerset Levels, England, UK, 9th January 2014.

Ernie Janes / Warning sign for road / track closed due to coastal erosion, Happisburg, Norfolk, UK