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Social Sciences - 12.07.2021 
The contraceptive effect of breastfeeding decreases with socio-economic development
While temporary sterility after childbirth lasts on average only a few weeks for a woman who does not breastfeed, it can last for months, or even more than a year, for one who does. But it was unclear how this contraceptive effect of breastfeeding is affected by a mother's 'energetic status' - that includes her nutrition and levels of physical activity.
Social Sciences - 17.06.2021 
Orphaned chimpanzees do not suffer from chronic stress
The loss of a loved one can be a defining moment, even in the animal world. In chimpanzees, for example, individuals whose mothers die when they are young are smaller than their counterparts, reproduce less and are also more likely to die at a young age. But why? To find out, an international research team 1 led by a CNRS researcher 2 studied the shortand long-term effects of maternal loss on the stress levels of orphaned chimpanzees over a 19-year period.
History / Archeology - Social Sciences - 27.05.2021 
Jebel Sahaba: A succession of violence rather than a prehistoric war
Since the 1960s, the Jebel Sahaba cemetery (Nile Valley, present-day Sudan) has become the emblem of organised warfare during prehistory. Re-analysis of the data, however, argues for a succession of smaller conflicts. Competition for resources is probably one of the causes of the conflicts witnessed in this cemetery.
Social Sciences
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While temporary sterility after childbirth lasts on average only a few weeks for a woman who does not breastfeed, it can last for months, or even more than a year, for one who does. But it was unclear how this contraceptive effect of breastfeeding is affected by a mother's 'energetic status' - that includes her nutrition and levels of physical activity.
The loss of a loved one can be a defining moment, even in the animal world. In chimpanzees, for example, individuals whose mothers die when they are young are smaller than their counterparts, reproduce less and are also more likely to die at a young age. But why? To find out, an international research team 1 led by a CNRS researcher 2 studied the shortand long-term effects of maternal loss on the stress levels of orphaned chimpanzees over a 19-year period.
Since the 1960s, the Jebel Sahaba cemetery (Nile Valley, present-day Sudan) has become the emblem of organised warfare during prehistory. Re-analysis of the data, however, argues for a succession of smaller conflicts. Competition for resources is probably one of the causes of the conflicts witnessed in this cemetery.
