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<jats:p> In science news around the world this week, 74 Chinese cities began measuring concentrations of harmful particulate matter, a Chinese government regulation toughening penalties for academic fraud took effect, the company that owned the <jats:italic>Deepwater Horizon</jats:italic> agreed to pay $1.4 billion, the U.S. Supreme Court has rejected a case challenging government-funded research on human embryonic stem cells, 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/339/6116/124.1.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/339/6116/124.2.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/339/6116/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/339/6116/125.2.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/339/6116/125.1.summary">Newsmakers</jats:ext-link> </jats:p> </jats:list-item> </jats:list> </jats:p>

<jats:p> Researchers discovered that though the pale wrinkles that adorn fingertips after an extended soaking may be unsightly, they help us get a stronger grip on slippery objects. In other news, a close look at fossils of a group of bipedal dinosaurs suggests that many of them shook their muscular, feather-adorned tails to gain attention during courtship. And this week's <jats:italic>Science</jats:italic> LIVE will look at some provocative new insights into tackling global warming, while this week's by the numbers features carbon dioxide emissions of the world's telecommunications infrastructure and the planets in the Milky Way galaxy. </jats:p>

<jats:p>Carl Woese, who revolutionized microbiology through his studies of single-celled microbes called archaea, and Rita Levi-Montalcini, who was awarded the Nobel Prize in physiology or medicine for her discovery of nerve growth factor, have died. The U.S. National Academy of Engineering announced that it will honor three teams for notable achievements in telecommunications, bioengineering, and engineering education.</jats:p>

<jats:p>The battle over the fiscal cliff is far from over for U.S. scientists.</jats:p>

<jats:p>A provocative new study looks at the influential 2004 paper that introduced the concept of climate "wedges"—and the sobering question of what it may take to stabilize and then phase-out emissions of global warming gases.</jats:p>

<jats:p>On New Year's Eve, the U.S. Food and Drug Administration approved the first new tuberculosis drug in more than 40 years.</jats:p>

<jats:p>Researchers have attempted to measure the degree to which the one-child policy has shaped the personalities of Chinese 20- and 30-somethings.</jats:p>