Artist Rachel Stubbs works on the final touches of a sand sculpture she has built as part of this year's “Once Upon a Time” themed annual Weston-super-Mare Sand Sculpture festival on April 16, 2014 in Weston-Super-Mare, England. Due to open on Good Friday, a team of award winning sand sculptors from across the globe have been working to create sand sculptures influenced by fairy tales and fables but that also include some current television and cinema blockbuster hits such as The Hunger Games, Game of Thrones and The Hobbit. (Photo by Matt Cardy/Getty Images)

Tibetan monks create an intricate picture made from coloured sand at St. Mungo Museum of Religious Life and Art on November 23, 2011 in Glasgow, Scotland. The monks, from the Panchen Lama's Monastery, are creating a Sand Mandala as part of a Tantric Buddhist ritual, invoking the presence of the Buddha in a design representing the palace of the deities. (Photo by Jeff J Mitchell/Getty Images)

A group of around 400 demonstrators participate in a protest by burying their heads in the sand at Sydney's Bondi Beach November 13, 2014. Hundreds of protesters participated in the event, held ahead of Saturday's G20 summit in Brisbane, which was being promoted as a message to Australian Prime Minister Tony Abbott's government that, “You have your head in the sand on climate change”. (Photo by David Gray/Reuters)

Detail of a sand sculpture of Pirates of the Caribbean is seen as pieces are prepared as part of this year's Hollywood themed annual Weston-super-Mare Sand Sculpture festival on March 26, 2013 in Weston-Super-Mare, England. Due to open on Good Friday, currently twenty award winning sand sculptors from across the globe are working to create sand sculptures including Harry Potter, Marilyn Monroe and characters from the Star Wars films as part of the town's very own movie themed festival on the beach. (Photo by Matt Cardy)

Dameon Harris of Nevada gets used to the controls of a bulldozer at Dig This October 27, 2011 in Las Vegas, Nevada. At Dig This, tourists take a short class and can then operate full-size hydraulic excavators and track-type bulldozers in a giant sandbox while being guided by instructors over headsets. (Photo by Ethan Miller/Getty Images)

Water gushes out from the Xiaolangdi Reservoir on the Yellow River during a sand-washing operation on June 20, 2012 in Luoyang, China. The sand-washing operation, which started on June 19 and will last for about 20 days, is conducted to clear out the silt deposits at the dam. (Photo by China Foto Press)

From Tibetan monks playing basket ball with ice thawing high up in the Himalayas, to the pollution that hides behind the Taj Mahal, here’s pick from 60 exceptional environmental photographs, by photographers and filmmakers from 70 countries, that will go on show at the Royal Geographical Society in London from 29 June to 21 August. The winners will be announced on 28 June. Here: Gravel Workmen of Chittagong, Bangladesh, by Faisal Azim. Gravel workmen look through a glass window at a gravel-crushing yard in Chittagong. Full of dust and sand, it is an extremely unhealthy environment for working, but still hundreds of people work here for their livelihoods. (Photo by Faisal Azim/2016 Atkins CIWEM Environmental Photographer of the Year)

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