Parchments such as this 14th century archbishop’s register hold clues to ancient DNA of animals. Photograph: By permission of the Borthwick Institute for Archives

Documents similar to the Book of Kells and other ancient parchments may soon reveal more secrets.Scientists at Trinity College Dublin and the Univers(...)

The unusual colouration of Siamese (above) and Burmese cats – which is limited to the extremities – is due to particularly interesting genetics. Photograph: Thinkstock

Genes and the DNA that makes them up form an intimate link between the present and the past. In the present they govern many aspects of our bodies (...)