Sim Chi Yin’s ongoing project, Shifting Sands, examines the global hunger for sand and the ill-regulated, under-documented industry it has fed. Chi Yin first looked into the idea of sand as a commodity in 2017, beginning by focusing on Asia. The exploitation of sand—legal and illegal—has generated corruption, political unrest and ecological threat, and has even led to the rise of violent “sand mafias” across the globe. Pictured here, tractors plough through piles of sand which have been deposited by sand barges at the Forest City development. Billed as a model of future green urban planning, the ambitious project plans to make four artificial islands off the coast.