The Cloud Arch is a-long-span structure made using Expanded Polystyrene (EPS) foam – an ultralightweight material most commonly used for packaging purposes. The material is 95 per cent air, conferring it with an extraordinarily low mass. The key to using the foam as a component material for the arches was the application of digital technology during the fabrication process. The extremely low mass of the product could tremendously increase the ease and convenience of building large-scale structures that use arches to create extensive, column-free spaces. In addition to its extremely low weight, EPS’s high strength makes it an excellent ingredient for use in composite building materials. With Cloud Arch, researcher hope to reduce the construction cost by one-third and construction time by half, compared to conventional construction materials, such as concrete. However, it has attracted controversy due to its ubiquitous use and improper disposal. Environmental studies have revealed its composition does not biodegrade easily and could take centuries before it dissolves into the environment. Producing these materials also has high environmental impact including hazardous waste emissions. Architects and engineers from the National University of Singapore who have invented Cloud Arch, are working on it coz they see a future for EPS in Construction Industry. Do we see the future too?