The text highlights the problems arising from the construction of two dams on the Nile and underlines the threats that constitute for the natural environment and the cultural landscape the plans of the Sudanese government for eight new dams. The solutions proposed stem from experience in the archaeological fieldwork but touch upon the political dimensions of this crisis.

Instead of flowing into the sewer, rainwater can replace drinking water in several domestic operations such as WC, washing of clothes, house cleaning and watering. In the German town of Giessen, citizens are encouraged to collect rainwater in modern storage tanks for household use, saving thus drinking water and money.

The need for renewable energy forced several institutions in the UK to look for ways to exploit the country’s tidal resources. The River Mersey is one of the best locations for such “experimentations”, which could constitute part of a much wider action, aimed at tackling the twin challenges of climate change and energy security.

An aquatic city, burdened by history and ages of civilization, marked by shabby splendour, it impresses generations of creators through time. All forms of artistic expression were attracted by its legend. Cinema could not be indifferent to the "liquid" image of a distant world, in the boundaries of metaphysic.

A crossroad of peoples and cultures, a geographical, administrative and economic hub, a celebrated and romantic city, Istanbul does not cease to amaze with the multitude of architectural monuments it incorporates. Among them are many cisterns, certain of which have found a new role in the city’s life. Their reuse is a chance for a didactic discussion, considering the scarcity of similar interventions in Greece.