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<jats:p>On this week's show: Making computers more like brains.</jats:p>

<jats:p> Elucidating the mind's inner workings is one of the remaining challenges facing scientists today. Since Ramó Cajal's first illustrations of neuronal structures, neuroscientists have benefited from new ways to visualize the microscopic components within the brain. The development of new, advanced imaging techniques holds the promise for elucidating a better understanding of the how the brain works. Already, cutting-edge tools such as optogenetics and CLARITY offer researchers novel methods for peering into the structure and function of the brain. This webinar will explore the most recent neurotechniques and how these are being used to advance our knowledge of the brain. <jats:list list-type="bullet"> <jats:list-item> <jats:p> <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="http://webinars.sciencemag.org/webinar/archive/advances-neurotechniques">View the Webinar</jats:ext-link> </jats:p> </jats:list-item> </jats:list> </jats:p>

<jats:p>A weekly roundup of information on newly offered instrumentation, apparatus, and laboratory materials of potential interest to researchers.</jats:p>

<jats:title>The nutritional sins of the mother…</jats:title> <jats:p> Prenatal exposures of a mother can affect the health of her offspring, but how? Radford <jats:italic>et al.</jats:italic> found that the male progeny of undernourished pregnant mice had altered DNA chemistry in their sperm. In addition, the offspring displayed compromised metabolic health. The specific affected genes not only lost DNA methylation but also lacked the normal sperm DNA packaging factors (protamines) and instead were enriched in nucleosomes. Thus, when subjected to a suboptimal prenatal environment, offspring feel the effects of the maternal assault. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" related-article-type="in-this-issue" xlink:href="10.1126/science.1255903">10.1126/science.1255903</jats:related-article> </jats:p>

<jats:p>Thomas Barnett, a U.S. military geostrategist, has argued that we have leviathan armies that quickly win wars, only to lose the peace. To change that outcome, stability must be established by rebuilding the infrastructure, institutions, and economy of a war-torn nation. An outstanding example of science applied to nation rebuilding is the hyperspectral survey of Afghanistan by the U.S. Geological Survey (USGS) in 2007. This survey quantified 24 world-class mineral deposits (including iron, cobalt, gold, copper, and rare earth elements), positioning Afghanistan to become a major supplier of minerals (see the News story on p. 725), most of which are in demand for the manufacture of cell phones, computers, and renewable energy technologies.</jats:p>

<jats:p>A roundup of weekly science policy and related news.</jats:p>

<jats:p>With experimental treatments in short supply, some researchers think existing medicines might work.</jats:p>

<jats:p>Officials claim paper contained classified information.</jats:p>