The challenges facing water management have become increasingly global in scope since the 1970s. This reflects the rising awareness about the uncertainties posed by the worsening situation of the hydrosphere, and particularly freshwater, and the unsustainability of water management practices in many areas. It is also a reflection of the conflicts flaring up from the protracted social inequaliti...

DENYS HAY, Annalists and historians. Western historiography from the eighth to the eighteenth century, London, Methuen, 1977, 8vo, pp. viii, 215, £2.95 (paperback). For very nearly forty years the distinguished Professor of Medieval History in the University of Edinburgh has planned to write a history of European historiography. He now does so with a brilliant survey, ranging from the historian...

Today, many top mathematicians know about or even study computational complexity. As a result, mathematicians now pay more attention and respect to the foundation of computer science and mathematics. The foundation of mathematics, which is highly related to logic and philosophy, was for a longest time ignored by a considerable number of mathematicians. Steve Smale may have been the first pure m...

1. INTRODUCTION AND EARLY DEVELOPMENTS. Logic and foundations are a domain of mathematics concerned with basic mathematical structures (in terms of which one can define all other mathematical structures), with the correctness and significance of mathematical reasoning, and with the effectiveness of mathematical computations. In the twentieth century, these areas have crystallized into three lar...

In the field of natural and man-made disasters, fire has played a predominant role. A report is presented of fire disasters in the twentieth century, with a chronological analysis of different worldwide typologies.