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<jats:p>Resistance-free electric currents and their eventual explanation have influenced thinking far beyond solid state physics.</jats:p>

<jats:p>Researchers think they are on the verge of discovering weird new particles that borrow a trick from superconductors and could give a big boost to quantum computers.</jats:p>

<jats:p>During the past few decades, several new classes of superconductors have been discovered that do not appear to be related to traditional superconductors. The source of the superconductivity of these materials is likely different from the electron-ion interactions that are at the heart of conventional superconductivity. Developing a rigorous theory for any of these classes of materials has proven to be a difficult challenge and will remain one of the major problems in physics in the decades to come.</jats:p>

<jats:p>The past three years have witnessed the discovery of a series of novel high-temperature superconductors. Trailing behind the cuprates, these iron-based compounds are the second–highest-temperature superconducting material family known to date. Despite the marked differences in the chemical composition, these materials share many properties with the cuprates and offer the hope of finally unveiling the secret of high-temperature superconductivity. The main theme of this review is the electron-pairing mechanism responsible for their superconductivity. We discuss the progress in this young field and point out the open issues.</jats:p>

<jats:title>Asteroseismology Delivers</jats:title> <jats:p> Using asteroseismology—the study of stellar oscillations, it is possible to probe the interior of stars and to derive stellar parameters, such as mass and radius (see the Perspective by <jats:bold> <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6026" page="180" related-article-type="in-this-issue" vol="332" xlink:href="10.1126/science.1203887">Montgomery</jats:related-article> </jats:bold> ). Based on asteroseismic data from the NASA Kepler mission, <jats:bold> Chaplin <jats:italic>et al.</jats:italic> </jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" page="213" related-article-type="in-this-issue" vol="332" xlink:href="10.1126/science.1201827">213</jats:related-article> ) detected solarlike oscillations in 500 solartype stars in our Galaxy. The distribution of the radii of these stars matches that expected from stellar evolution theory, but the distribution in mass does not, which challenges our knowledge of star formation rates, the mass of forming stars, and the models of the stars themselves. <jats:bold> Derekas <jats:italic>et al.</jats:italic> </jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" page="216" related-article-type="in-this-issue" vol="332" xlink:href="10.1126/science.1201762">216</jats:related-article> ) report the detection of a triple-star system comprising a red giant star and two red dwarfs. The red giant star, instead of the expected solarlike oscillations, shows evidence for tidally induced oscillations driven by the orbital motion of the red dwarf pair. Finally, <jats:bold> Beck <jats:italic>et al.</jats:italic> </jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" page="205" related-article-type="in-this-issue" vol="332" xlink:href="10.1126/science.1201939">205</jats:related-article> ) describe unusual oscillations from a red giant star that may elucidate characteristics of its core. </jats:p>

<jats:p>Model experiments show that nanometer-thick films at interfaces reduce interface energy and form an equilibrium state.</jats:p>

<jats:p>A functional RNA has been synthesized by an RNA enzyme from mononucleotide building blocks.</jats:p>

<jats:p>Measurements of 500 Sun-like stars show that their properties differ from those predicted by stellar population models.</jats:p>

<jats:p>The Kepler satellite reveals details of the oscillations patterns of an evolved star in an exotic triple-star system.</jats:p>