There is a high incidence of periventricular leukomalacia, caused by hypoxia-ischemia, in preterm infants. These lesions damage the periventricular crossroads of commissural, projection and associative pathways, which are in a close topographical relationship with the lateral ventricles. We explored to what extent abnormalities of echogenicity of the periventricular crossroads correlate with ch...

In France, about 800 pedestrians are killed and over 17,000 are injured each year. There is a prevalence of these data in urban areas where the traffic is denser and the interaction between drivers and pedestrians is more complex. This can be exemplified by considering the risk taken by a pedestrian situated at a crossroads and willing to cross. This particular situation is indeed highly comple...

Threats to biodiversity outpace the resources of the conservation community and necessitate careful prioritization of conservation actions. I suggest that targeting the regions where biogeographic assemblages intersect—“biogeographic crossroads”—is a strategy that may achieve significant conservation economy by focusing on areas that satisfy many conservation criteria. I used a combination of d...