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<jats:p>Researchers reported at the meeting that they've devised polarizing filters made from organic solar cells that recycle some of the absorbed light from liquid crystal displays.</jats:p>

<jats:p>Snapshots from the meeting include organic photovoltaics that break the 10% barrier, heat-stable stretchable electronics, a nanowire-based optical probe that can peer within individual cells, large-scale nanocarbons, and a light-sensitive protein that can turn a transistor on and off.</jats:p>

<jats:p>At the meeting, researchers described materials that could pave the way for making rechargeable batteries from aluminum, which could lead to cheaper and safer rechargeables.</jats:p>

<jats:p> Slimak <jats:italic>et al</jats:italic> . (Reports, 13 May 2011, p. 841) reanalyzed the lithic assemblage from the northern site of Byzovaya (Russia) and concluded that it was Mousterian and produced by Neandertals. The previous interpretation of this assemblage as falling within Early Upper Paleolithic variability remains the most parsimonious explanation; pending additional fossil discoveries, there is no evidence supporting the occurrence of Neandertals at these high latitudes. </jats:p>

<jats:p> Contrary to what Zwyns <jats:italic>et al</jats:italic> . claim on a bibliographical basis, the lithic industry of Byzovaya cannot belong to the Streletskayan complex or be considered as Upper Palaeolithic (UP). Direct analysis of northern assemblages and of Streletskayan technologies reveals incompatible features between these industries. Byzovaya is structured on specific Mousterian technologies and does not show any unique features of the UP. </jats:p>