Jack Dykinga / Sossusvlei World Heritage Site, with curving red sand dunes and acacia trees. Namib-Naukluft National Park, Namibia. June 2013.

Jack Dykinga / Sossusvlei World Heritage Site, with curving red sand dunes and Acacia trees. Namib-Naukluft National Park, Namibia. June 2013.

Eric Baccega / Men from the Mursi tribe decoratively scaring skin, one man scars the arm of another one by lifting the skin with an acacia spine and cutting it with a razor blade, Ethiopia, March 2015.

Hougaard Malan / Acacia tree amongst flowering Tribulus on Kalahari Dune. Kgalagadi Transfrontier Park, Southern Africa. January 2010.

Hougaard Malan / Camelthorn tree in mountain valley at sunset. Namib Naukluft National Park, Namibia. February 2011.

Hougaard Malan / Typical landscape of red dunes, grass and camelthorn trees. Namib Rand, Namibia. May 2010.

Hougaard Malan / Sunrise through the branches of a camelthorn tree. Namib Rand, Namibia. May 2010.

Hougaard Malan / Camelthorn tree at sunrise with mountain beyond. Namib Rand, Namibia. May 2010.

Pat Tuson / Wild Perennial Lupin (Lupinus perennis) Gillespie Park Local Nature Reserve an urban ecology park with tower blocks in background, Highbury, London Borough of Islington, England UK

Ernie Janes / Peas (Pisum sativum) 'Kelvedon Wonder' growing in vegetable garden.

Loic Poidevin / Von Der Deckeni hornbill (Tockus deckeni) in acacia bush, Samburu National Park, Kenya, September

Loic Poidevin / Red billed hornbill (Tockus erythrorhynchus) Samburu National Park, Kenya, October