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Abstract In many cases, biodiversity managers have learned the hard way that eliminating an invasive alien species can have unexpected, counter-intuitive and harmful chain effects. This surprise effect is difficult to study without taking great risks for …

Abstract Why conserve nature? This question is far from simple. Although the first national conservation initiatives date back to the 17 th   century, initially focused on forest management, the methods and motivations behind nature conservation have …

Abstract Theoretical and observational advances in modern astrophysics and cosmology tell us that the Universe today is made up of a very small fraction (~5%) of ordinary matter, the rest being made up of constituents whose nature is still unknown: dark …

Abstract In the Local Group, the best estimate of mass is given by the Viriel theorem. Compact groups pose the problem of their lifetime. In fact, according to simulations, they have not been compact for a long time. In galaxy clusters, there are several …

Résumé Les maladies professionnelles sont sous-déclarées et sous-reconnues en France comme dans d’autres pays industrialisés. Elles touchent principalement les personnes qui se situent en bas de l’espace social et les minorités ethnoraciales. La …

Abstract With almost 430   000 new cases each year in France, the incidence of cancer is rising steadily  ; it has doubled since the early   1990s. While much research focuses on so-called individual behaviours (smoking, alcohol consumption, diet, …

Abstract The publication in 1499 of the Hypnerotomachia Poliphili , attributed to Francesco Colonna, by the publisher Aldo Manuce in Venice, marked the beginning of a learned and original mode of expression whose few surviving productions span a little …

Abstract In modeling, evolutionary phenomena are often analyzed through the prism of partial differential equations, interpreted as a macroscopic description of the problem of interest. However, this classic approach comes up against the problem of model …

Abstract This question is crucial to a full understanding of the evolution of the Solar System. We will examine various constraints, such as the evolution of the bombardment of telluric planets, recorded by lunar craters, the survival of binary objects in …