Jaeger et al. (Reports, 21 September 2007, p. 1709) presented images of the Athabasca Valles channel system on Mars and asserted that the observed deposits are composed of thin, fluid lavas. However, all the features they described are secondary and postdate the surface by many millions of years, as documented by structural relationships with small, young impact craters.

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The rise of oxygen ca. 2.3 billion years ago (Ga) is the most distinct environmental transition in Earth history. This event was enabled by the evolution of oxygenic photosynthesis in the ancestors of Cyanobacteria. However, long-standing questions concern the evolutionary timing of this metabolism, with conflicting answers spanning more than one billion years. Recently, knowledge of the Cyanob...

Background: The induction of labor (IOL) is a common obstetric intervention, steadily increasing (one out four pregnancies) in the last years. This procedure should be considered only when there medical indication, and benefits outweigh maternal and/or fetal risks waiting for spontaneous onset labor. Therefore, this study aims to compare efficacy IOL terms delivery time, mode delivery, neonatal...

Abstract Introduction : There is currently no consensus on the management of large fetuses in order to minimize fetal complications. The aim this study was assess whether antenatal recognition large-for-gestational age (LGA) reduced poor obstetric newborn outcomes a hospital where expectant used. Material and methods A retrospective cohort made two delivery units at Karolinska University Hospit...