He lived eight years in the Sahara, engaged in the study and restoration of oases in Algeria. In numerous essays and books published since the late 1980s, he has demonstrated that oases are the result of human ingenuity, and that they represent a heritage of technical knowledge to combat aridity and a model of sustainable management for the entire planet.
He has coordinated and managed projects based on the recovery of the ancient techniques of water harvesting systems with various international organizations throughout the Mediterranean, and in Yemen, Mauritania and Ethiopia. In particular, he has rebuilt the water systems of Petra, in Jordan, contributing to the UNESCO plan for ‘Greater Petra’, and restored canals and drainage systems in the monolithic town of Lalibela, Ethiopia, as team leader of the UNESCO and World Monument Fund (WMF) projects.
He is currently producing an oasis eco-museum for the kingdom of Morocco and a publication that aspires to launch a worldwide appeal and to promote an alliance between Arab countries for the protection of oases.
He is the promoter of the recovery of the troglodyte city of the Sassi of Matera in southern Italy, which had been completely abandoned in the 1960s. To this end, he spent ten years in the Sassi of Matera, living in caves he restored using traditional methods and recovering prehistoric systems for the collection of rainwater and methods of passive cooling.