• Aujourd'hui, plus de vingt-trois millions de personnes sont infectées par le virus du sida en Afrique. L'idée de cet essai est de faire comprendre l'ampleur de la tragédie et de recenser les bonnes pistes pour aider l'Afrique subsaharienne à s'en sortir. Elles passent d'abord par des personnages hors du commun, prêts à se battre pour stabiliser et diminuer enfin la pandémie.

  • Singulier(s)

    Christophe Gelé

    Raymond Lefranc n'est pas un homme comme les autres, il veut en témoigner parce qu'on parle beaucoup des gens comme lui sans les connaître. Il fait partie de ceux qu'on appelle les super-héros. Mais Raymond Lefranc n'est pas un super-héros comme les autres. Il fait partie de ceux qui se cachent...

  • Shows that networks in European integration governance were not a phenomenon that developed in the 1980s out of a 'hollowing out' of the nation-states in the 1970s. Based throughout on newly accessible sources, the authors discuss various networks and show how they contributed to constitutional choices and policy decisions after World War II.

  • This book puts multilevel selection theory into a much needed historical perspective. This is achieved by discussing multilevel selection in the first half of the twentieth century, the reasons for the energetic rejection of Wynne-Edwards' group selectionist stance in the 1960s, Elisabeth Lloyd's contribution to the units of selection debate, Price's hierarchical equation and its possible interpretations and, finally, species selection in macroevolutionary contexts. Another idea also seems to emerge from these studies; namely, that perhaps a more sure-footed position for multilevel selection theory would be acquired if we were to show a renewed interest in 'old group selection', i.e. in scenarios in which the differential reproduction of the groups themselves affects the frequencies of either individual-level or group-level traits. This book will be of interest to philosophers and historians of biology, as well as to theoretically inclined biologists who have an interest in multilevel selection theory.

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