Ashley Cooper / Asia's largest solar popwer station, the Gujarat Solar Park, in Gujarat, India. It has an installed capacity of 1000 MW. Here workers wash dust off the panels to increase their efficiency. December 20...

Ashley Cooper / Asia's largest solar popwer station, the Gujarat Solar Park, in Gujarat, India. It has an installed capacity of 1000 MW. Here workers wash dust off the panels to increase their efficiency. December 20...

Ashley Cooper / Asia's largest solar power station, the Gujarat Solar Park, in Gujarat, India. It has an installed capacity of 1000 MW. Here workers wash dust off the panels to increase their efficiency. December 201...

Ashley Cooper / Thirlmere reservoir during severe drought, Lake District, England, UK, July 2010.

Ashley Cooper / Thirlmere reservoir during severe drought, Lake District, England, UK, July 2010.

Ashley Cooper / Mud cracks at Thirlmere reservoir in the Lake District during severe drought, England, UK. July 2010.

Mark Carwardine / Sumatran rhino (Dicerorhinus sumatrensis) within veterinary enclosure, being washed with a hose pipe. Captive-Sumatran Rhino Sanctuary, within Way Kambas National Park, Lampung Province, southern Suma...

Matthew Maran / Red fox cub (Vulpes vulpes) peers out from behind water trough on allotment, London, England.

Nigel Cattlin / Young orange orchard on the Letaba Estates with hose for piped irrigation and nutrient drip, near Tzaneen, Transvaal, South Africa

Neil Aldridge / Cages used for trapping European badgers (Meles meles) for vaccination against TB are cleaned. North Somerset, UK. Badger vaccination programmes are being carried out in England as a means of controll...