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<jats:p>In science news around the world this week, the first of the Giant Magellan Telescope's seven mirrors has been cast, Australian scientists are once again being awarded grants, the United Kingdom is fighting a fungal disease that threatens its ash woodlands, European researchers are petitioning their heads of state in an effort to prevent budget cuts, and a new report says the U.S. Department of Defense should consider hiring foreign-born scientists.</jats:p>

<jats:p> Follow the links below for a roundup of the week's top stories in science, or <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="http://www.sciencemag.org/content/338/6107/586.1.full.pdf">download a PDF of the entire section</jats:ext-link> . <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://www.sciencemag.org/content/338/6107/586.2.summary">Around the World</jats:ext-link> </jats:p> </jats:list-item> <jats:list-item> <jats:p> <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="http://www.sciencemag.org/content/338/6107/findings.full">Findings</jats:ext-link> </jats:p> </jats:list-item> <jats:list-item> <jats:p> <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="http://www.sciencemag.org/content/338/6107/586.3.summary">Random Samples</jats:ext-link> </jats:p> </jats:list-item> <jats:list-item> <jats:p> <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="http://www.sciencemag.org/content/338/6107/587.summary">Newsmakers</jats:ext-link> </jats:p> </jats:list-item> </jats:list> </jats:p>

<jats:p>A coalition of science groups received answers from nine lawmakers on science and science policy questions that it sent to Republican and Democratic congressional leaders. Researchers also created what may be the first image of the blood-brain barrier in a live animal. They gave a zebrafish embryo a gene for a protein that glows red in the barrier's endothelial cells and color-coded the blood vessels. In other news, dozens of apps and gadgets that claim to repel mosquitoes with high-frequency sounds are endangering the public, and some scientists are fed up.</jats:p>