Milk.

In the second item on the show, Quentin Cooper looks back at the history of milk drinking by adult humans, and how this has affected modern civilisation. Although the first farm animals were domesticated 10 000 years ago, it appears that it took a further 2000 years before we started milking them. To understand whether or not this is the case and if so why, Quentin Cooper speaks to Professor Andrew Sherrat from the Ashmolean Museum in Oxford and Professor Richard Evershed from the Department of Chemistry at the University of Bristol. Prof's Sherrat and Evershed are analysing traces of milk left in pottery samples dating back some 9000 years. The first item on the show is about travel.