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<jats:p>In science news around the world this week, FDA's decision on an emergency contraceptive has been overruled, controversial changes to forest law have been passed in the Brazilian Senate, climate negotiators have agreed to pursue a new treaty, Merck has committed $1.5 billion to build in Beijing, the Royal Society says courtroom neuroscience is not ready for prime time, and what will be the largest optical-infrared telescope ever built has taken a big step forward.</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/334/6062/1478.1.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/334/6062/1478.2.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/334/6062/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/334/6062/1479.1.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/334/6062/1480.1.summary">Newsmakers</jats:ext-link> </jats:p> </jats:list-item> </jats:list> </jats:p>

<jats:p> In the December issue of <jats:italic>Arctic</jats:italic> , a photographer and an arctic biologist note that there have now been three documented sightings of adult male polar bears on sea ice feeding on younger bear kills. The waxy buildup in a whale's ears may contain interesting data about its exposure to contaminants. And this week's numbers quantify worldwide malaria deaths in 2010, budget cuts at Cancer Research UK, and the amount paid at auction for James Lovell's Apollo 13 checklist. </jats:p>