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THIS WEEK IN edited by Stella Hurtley and Phil Szuromi CREDITS (TOP TO BOTTOM): SHEN ET AL.; KOPPERS AND STAUDIGEL Stuffed with Pulsars tals. Rich et al. (p. 910; see the Perspective by Martin and Luo) now Globular clusters contain thousands to millions of stars and are among show that the ear of the earliest known monotreme, from the Early the oldest objects in the universe. Ransom et al. (p. 892; see the Cretaceous, has only one bone. Thus, the complex ears of mammals Perspective by Lorimer) studied the globular cluster,Terzan 5, with the arose separately and converged in different mammalian lineages. Green Bank radio telescope and discovered 21 new millisecond pulsars, about half in binary Decisions, Decisions… systems (two with close enough orbits to Cuprates in Realallow repeated eclipses and others with What makes an individual and Momentum-Space unusually wide orbits or odd companions), decide to choose one set of several with some of the highest rates of rotaactivities over another? BriggRecent real-space imaging experiments on the hightion, and two with masses that exceed the man et al. (p. 896) tried to temperature cuprate superconductors have revealed the theoretical limits for neutron stars. This unravel the mechanisms existence of a “checkerboard” charge-ordering pattern menagerie of extraordinary pulsars has much underlying behavioral choice in on the surface. This structure has received much attento tell us about pulsar physics, general relativthe relatively simple nervous tion in terms of its relation to understandity, and globular cluster evolution. system of the medicinal ing the mechanism underlying superleech. They presented an conductivity in these materials. To animal with a constant strengthen the case, what is now Through a Glass, Darkly stimulus that repeatneeded are samples that allow Most carbon nanotubes are grown with the edly produced two di