Ann Kopka, ‘Distance Travelled Time Taken’, Used window envelopes, 2007 – 2011. Photo: Ann Kopka. ?Distance Travelled Time Taken? is an installation that addresses Ann Kopka?s engagement with the research, process and transformation of discarded everyday ephemera and disposable objects of little or no intrinsic value and is made from thousands of used window envelopes collected by a network of enthusiastic collectors from across the UK. www.artcontemporary.co.uk