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<jats:p>In science news around the world this week, Australia experiences record-high temperatures, 2012 is declared the hottest year on record for the United States, scientists petition to restore gun research, a Russian team retrieves the first sample from Lake Vostok, and more.</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/339/6117/256.1.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/339/6117/256.2.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/339/6117/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/339/6117/256.3.summary">Random Samples</jats:ext-link> </jats:p> </jats:list-item> </jats:list> </jats:p>

<jats:p> The White House has announced it will not be building the Death Star, the famous <jats:italic>Star Wars</jats:italic> orbiting weapons system; a giant squid has been caught on film; researchers determined why yellow jacket and bumblebee wings are both successful; and scientists have explored ways to introduce healthy gut bacteria to those with <jats:italic> <jats:italic>Clostridium difficile</jats:italic> </jats:italic> via a "fecal transplant." </jats:p>

<jats:p>What's next for Pakistan's polio vaccination campaign after workers are killed in multiple attacks?</jats:p>

<jats:p>Evolutionary anthropologist Brian Hare is launching a new company that claims to offer dog owners answers to pivotal questions about their dogs' personalities and more.</jats:p>

<jats:p>An algorithm and Web sleuthing has led researchers to discover the identities of anonymous DNA donors.</jats:p>