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<jats:p>With help from a group of cheerleaders, Project MERCCURI will send microbes collected from sports stadiums around the United States to duke it out in a microbial Super Bowl aboard the International Space Station.</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/343/6173/822.1.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/343/6173/822.2.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/343/6173/824.full">AAAS 2014 Annual Meeting</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/343/6173/822.3.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/343/6173/822.4.summary">Newsmakers</jats:ext-link> </jats:p> </jats:list-item> </jats:list> </jats:p>

<jats:p>Catch up on science highlights from the 2014 AAAS annual meeting in Chicago, Illinois, and read some of our favorite attendee responses to "What's the Coolest Science Fact You Know?"</jats:p>

<jats:p>A new analysis of the way galaxies are distributed through space suggests that some of the universe's dark matter may consist of hitherto undiscovered particles known as sterile neutrinos.</jats:p>

<jats:p>An experimental technique that manipulates a woman's DNA could spare her from passing on a potentially deadly disease to her children, but the technique breaks new and ethically fraught ground.</jats:p>

<jats:p>While one sequencing company breaks the $1000 genome barrier with high-end machines, another takes the first steps toward cheap, hand-held sequencers.</jats:p>

<jats:p>U.S. scientists working in Antarctica continue to feel the negative effects of last fall's government shutdown.</jats:p>

<jats:p>Researchers now have hard evidence that the circulation that helps warm the North Atlantic did indeed abruptly slow or perhaps even stop for centuries at a time more than 100,000 years ago.</jats:p>

<jats:p>In the coming months on two mountaintops in Chile, two new state-of-the-art instruments—the North American Gemini Planet Imager and the European SPHERE—will start scanning the skies for planets around other stars.</jats:p>

<jats:p>Researchers are collecting terabytes of recordings, from bird chirps to chainsaw roars. The emerging field of soundscape ecology has a lot to offer … and a lot to prove.</jats:p>