Hougaard Malan / Stormy weather over Blyde River Canyon, Mpumalanga, South Africa. January 2011.

Hougaard Malan / View from a high dune across desert landscape in morning light. Namib Rand, Namibia. April 2012.

Orsolya Haarberg / Kirkefjorden and surrounding mountains, viewed from Reinebringen. Hammarskaftet can be seen in foreground. Moskenes municipality, Lofoten, Nordland, Norway. October 2012

Guy Edwardes / Quilota Crater Lake, Cotopaxi Province, Ecuador, September 2010.

Enrique Lopez-Tapia / The forests of the Modi Khola river valley shrouded in fog. Annapurna Sanctuary, central Nepal, November 2011.

Tim Laman / Aerial view of morning mist above the Tiputini River in Yasuni National Park, Francisco de Orellana Province, Ecuador, July.

Floris van Breugel / The granite mountains of the high sierra, with clouds at sunset. Royce Lakes seen from Feather Peak, John Muir Wilderness, Sierra Nevada, California, September 2009

Tim Laman / Mist in the cloud forest at Sombom Ridge, Saruwaged Range, Huon Peninsula, Papua New Guinea

Felicity Lanchester,Felicity Lanchester / Cloud iridescence forming above a cumulonimbus cloud, caused by light refraction through individual water droplets and ice crystals at high altitude, Sierra Leone.

Enrique Lopez-Tapia,Enrique Lopez-Tapia / View of Trango Towers (6,286m), Central Karakoram National Park, Pakistan, July 2007.

Paul Harcourt Davies,Paul Harcourt Davies / Low lying cloud / mist over the Piano Grande in the early morning, Sibillini, Norcia, Italy, June 2010

Benjamin Barthelemy / Banner cloud formation around the summit of the Matterhorn (4,478m), Switzerland, September 2011.