Correction: The Development and Characteristics of Ancient Harbours-Applying the PADM Chart to the Case Studies of Ostia and Portus.

[This corrects the article DOI: 10.1371/journal.pone.

The Development and Characteristics of Ancient Harbours-Applying the PADM Chart to the Case Studies of Ostia and Portus.

Over the last 20 years, the geoarchaeology of ancient harbours has been a very active area of research around the Mediterranean basin, generating much palaeoenvironmental data from many sites, including estimations of sedimentation rates, the height of the ancient sea-level at different dates and palaeo-geographical reconstructions. Combining this information has proved a major challenge. This article proposes a new chart called the Palaeoenvironmental Age-Depth Model (PADM chart), that allows the researchers to combine all relevant indicators in order to estimate harbour potential of a given ancient port, and to generate comparable data between harbours in terms of degree of closure and water depth available against a synchronised chronology.

Lead in ancient Rome's city waters.

It is now universally accepted that utilization of lead for domestic purposes and water distribution presents a major health hazard. The ancient Roman world was unaware of these risks. How far the gigantic network of lead pipes used in ancient Rome compromised public health in the city is unknown.

Enhancing research publications using Rich Interactive Narratives.

It is desirable in many disciplines to include supplementary information to add value to research publications, particularly in digital form. The concept of interactive publications, in which the reader can browse and navigate through in a nonlinear manner, is one such medium that is explored in this paper. We describe the application of the Rich Interactive Narrative framework to provide such a mechanism in the fields of archaeology and chemistry, to supplement academic journal papers.