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International audience ; The unit of time used in demography is thirty years, the period of one generation. Demographic phenomena unfold slowly over time and therefore there is a time lag for public opinion to perceive and understand them. The expression "demographic implosion" must therefore be handled with care because, while it is true that in Europe there is a decrease in the proportion of youth, this decline will produce its effects very slowly: Population ageing and a decrease in natural growth. The analysis of the implosion allows one to dis- tinguish between two phenomena that often mistaken for each other. On the one side, the proportion of elderly persons grows because life expectancy at birth has increased and mortality has declined. This growth of the elderly is therefore the result of better living conditions, particularly medical advances. On the other side, the fall of fertility implies ageing from the base which reflects the lack of population replacement. One must therefore be careful to distinguish between two kinds of ageing: From the top, which reflects the many benefits of progress for men and women, and ageing from the base, which reflects estrangement regarding life. ; [L'unité de temps utilisée en démographie est de trente ans, la durée entre deux générations. Les phénomènes démographiques se déroulent lentement avec le temps et, donc, il y a un décalage dans la possibilité de l'opinion publique de percevoir et de comprendre. L'expression «implosion démographique» doit donc être manipulé avec soin, car, s'il est vrai qu'en Europe, il y a une diminution de la proportion de jeunes, cette baisse va produire ses effets lentement : vieillissement de la population et diminution de la croissance naturelle. L'analyse de l'implosion permet de distinguer deux phénomènes souvent confondus. D'un côté, la proportion de personnes âgées augmente parce que l'espérance de vie à la naissance a augmenté et la mortalité a diminué. Cette croissance des personnes âgées est donc le résultat de meilleures ...

"In his book A Second History, Beijing-based artist, Zhang Dali, examines the widespread use of photographic manipulation carried out by the Chinese government during the regime of Mao Tse-tung (1949-76). Using a compare and contrast format this artist book presents a chronological sequence of original, unmodified images together with their doctored doppelgängers which were manipulated in party-run, photo labs in the 50s, 60s and 70s for the Chinese propaganda market." -- From www.bywaterbros.com (Viewed 8 November 2012)