Hetta Howes learns that the absence of dental floss in the Neolithic era has left archaeologists with invaluable information about how our ancestors lived and where they travelled to. While piles of pig bones near Stonehenge reveal a communal society that used feasting as a form of negotiation. Penny Bickle and Jim Leary, who both lecture in the University of York's Department of Archaeology, uncover their findings from research projects in the Vale of Pewsey, Alsace and Stonehenge. Penny's current project is 'Counter Culture: investigating Neolithic social diversity', while Jim has been working on 'Neolithic Pilgrimage? Rivers, mobility and monumentality in the land between Avebury and Stonehenge'. This episode is one of a series of conversations - New Thinking - produced in partnership with the Arts and Humanities Research Council, part of UK Research & Innovation.

Producer: Torquil MacLeod