When artist Esther Polak and researcher Ieva Auzina discovered that much Latvian milk is transported to the Netherlands, they decided to follow its progress from the cow’s udder to the consumer’s mouth using GPS navigation. Their installation received the prestigious Golden Nica new-media prize and is now on display in the Zentrum für Kunst und Medientechnologie (ZKM) in Karlsruhe, Germany, as part of the exhibition Making Things Public.