By Margot Mottaz Cities buzz. Like giant batteries, they store energy and release it; their air is electric. They are fuelled by the intangible networks, both human and digital, that run tirelessly through their tall skyscrapers and narrow back alleys. In an attempt to reveal these imperceptible forces that make up urban environments, Human Vibrations, Hong Kong’s fifth Large-Scale Public Media Arts Exhibition, explores the relationship between technology and city dwellers. Through site-specific public works by eight new-media artists, both local and international, the exhibition looks on notions of time, transience and ephemerality, as well as how people relate to each other and to their environment. Taking centre stage in the exhibition is Fly High – Time Flies (2016) by Laurent Mignonneau and Christa Sommerer, in which swarms of flies smother the ICC’s facades as they would cattle on a hot summer day. The randomly generated mass aggregates, crowds the building on all sides and dissipates again. The tower, suddenly filled with life, becomes akin to the city it looks over, bustling with millions of …