Stable population structure in Europe since the Iron Age, despite high mobility

Ancient DNA research in the past decade has revealed that European population structure changed dramatically in the prehistoric period (14,000–3000 years before present, YBP), reflecting the widespread introduction of Neolithic farmer and Bronze Age Steppe ancestries. However, little is known about how population structure changed from the historical period onward (3000 YBP - present). To address this, we collected whole genomes from 204 individuals from Europe and the Mediterranean, many of which are the first historical period genomes from their region (e.g. Armenia and France). We found that most regions show remarkable inter-individual heterogeneity. At least 7% of historical individuals carry ancestry uncommon in the region where they were sampled, some indicating cross-Mediterranean contacts. Despite this high level of mobility, overall population structure across western Eurasia is relatively stable through the historical period up to the present, mirroring geography. We show that, under standard population genetics models with local panmixia, the observed level of dispersal would lead to a collapse of population structure. Persistent population structure thus suggests a lower effective migration rate than indicated by the observed dispersal. We hypothesize that this phenomenon can be explained by extensive transient dispersal arising from drastically improved transportation networks and the Roman Empire’s mobilization of people for trade, labor, and military. This work highlights the utility of ancient DNA in elucidating finer scale human population dynamics in recent history

Victimes ou bourreaux ?

Quels sont le rôle et la place des témoignages des défunts, victimes de la « famine génocidaire » de 1933, dans les rituels de mémoire pratiqués par la communauté ukrainienne de France ? Il s’agit ici de comprendre en quoi le qualificatif de « martyr » donné à ces morts permet d’effectuer un lien entre le passé et le présent de ce groupe, et, plus largement, de la patrie ukrainienne. Par ailleurs, on montrera comment, en traversant dans divers rituels une épreuve d’authenticité de la souffrance, ces témoignages deviennent un moyen d’administrer la preuve de l’existence même d’une nation ukrainienne traumatisée par différentes crises mémorielles au cours de son histoire.Victims or torturers ? The greco-catholics Ukrainians and the « Holodomor » What is the significance and the role of the written traces left by those who died victims of the genocidal famine of 1933 for the rituals of memory of the Ukrainian community in France? We examine the way calling the dead “martyrs” links the past to the present continued existence of the group and ultimately with the Ukrainian motherland. It is also shown, by including these “proofs” of the authenticity of suffering in various rituals, how written documents become the means of demonstrating the very existence of a Ukrainian nation traumatized by different remembered crises that have occurred during its history

Scènes antiques : de Rome à Vendeuil-Caply, les théâtres romains dans le nord de la Gaule, Musée archéologique de l'Oise, du 10 février au 25 novembre 2018, Gand, Snoeck édition, 2018, 68 p.

International audienc

Scènes antiques : de Rome à Vendeuil-Caply, les théâtres romains dans le nord de la Gaule, Musée archéologique de l'Oise, du 10 février au 25 novembre 2018, Gand, Snoeck édition, 2018, 68 p.

International audienc

Exposer l’Ethnoécologie au Musée de l’Homme

The Musée de l’Homme, which was opened October 15th, 2015, by the President of the Republic François Hollande, was entirely reshaped, in order to present a thematic course with our relations towards “nature” as a thread. The Musée de l’Homme leads us to think about human nature, as well as about our place within the biosphere and the evolution of life. In this pluridisciplinary itinerary, ethnoecology is inserted in little touches into several showcases: representation of nature (1001 ways of thinking the world), domestication and diversification of plants (with example of chilies), bees symbolism, portraits and contemporary ways of life (lifestyles with different impacts) and agrobiodiversity (with the example of maize in Mexico)

Understanding photochemistry and photo-ionization dynamics with highly correlated electronic structure methods: Two examples that highlight the transformative role of theory in the interpretation of experimental observations

no abstrac

Importance of hypoxic vasoconstriction in maintaining oxygenation during acute lung injury

SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Religion et Politique

À travers l'analyse d'exemples de la relation politique/religion, ce dossier de Terrain souhaite réfléchir sur les diverses configurations de cette relation : mouvements religieux pour la paix, manifestation mariale dans le contexte multiconfessionnel du Liban, affrontements religieux au cours de la guerre en ex-Yougoslavie, évocation de « martyrs » dans la définition de la nation ukrainienne, création de rituels religieux autour de victimes civiles de la Mafia sicilienne..

Multistep synthesis of a novel copper complex with potential for Alzheimer’s disease diagnosis

International audienc