A model of an ice cream is seen on an ice cream van in London, Britain, in this photograph taken on August 30, 2015. Changing tastes and distribution challenges in emerging markets are opening up an ice cream industry long dominated by global food companies such as Unilever and Nestle. Though classic vanilla, chocolate and strawberry remain the world's most popular ice cream flavors, increasingly health-conscious consumers are moving away from the large tubs of the past to smaller treats. Photograph taken on August 30. REUTERS/Toby Melville