The scattering of single photons from a trapped ion may shed light on the process of decoherence and quantum measurement.

Authors: Yinnon Glickman, Shlomi Kotler, Nitzan Akerman, Roee Ozeri

The use of a shape-memory metal alloy as a matrix better exploits the inherent elastic properties of niobium nanowires. [Also see Perspective by Zhou]

Authors: Shijie Hao, Lishan Cui, Daqiang Jiang, Xiaodong Han, Yang Ren, Jiang Jiang, Yinong Liu, Zhenyang Liu, Shengcheng Mao, Yandong Wang, Yan Li, Xiaobing Ren, Xiangdong Ding, Shan Wang, Cun Yu, Xiaobin Shi, Minshu Du, Feng Yang, Yanjun Zheng, Ze Zhang, Xiaodong Li, Dennis E. Brown, Ju Li

Earth's core formed under conditions similar to those that formed the most common meteorites.

Authors: Julien Siebert, James Badro, Daniele Antonangeli, Frederick J. Ryerson

Current global average surface air temperature is warmer than that for all but a small fraction of the past 11,300 years.

Authors: Shaun A. Marcott, Jeremy D. Shakun, Peter U. Clark, Alan C. Mix

Caffeine at concentrations found in flowers helps individual honeybees remember where to find associated nectar. [Also see Perspective by Chittka and Peng]

Authors: G. A. Wright, D. D. Baker, M. J. Palmer, D. Stabler, J. A. Mustard, E. F. Power, A. M. Borland, P. C. Stevenson

Long-term observation reveals that the presence of family members keeps a new generation of prairie dogs close to home.

Author: John L. Hoogland

A mosaic of genes acquired from various phyla enable a red alga to grow abundantly in hot, acidic, and toxic niches. [Also see Perspective by Rocha]

Authors: Gerald Schönknecht, Wei-Hua Chen, Chad M. Ternes, Guillaume G. Barbier, Roshan P. Shrestha, Mario Stanke, Andrea Bräutigam, Brett J. Baker, Jillian F. Banfield, R. Michael Garavito, Kevin Carr, Curtis Wilkerson, Stefan A. Rensing, David Gagneul, Nicholas E. Dickenson, Christine Oesterhelt, Martin J. Lercher, Andreas P. M. Weber

Tests of the oxidative damage mechanism for antibiotic killing do not support the generality of the hypothesis.

Authors: Yuanyuan Liu, James A. Imlay

Tests of the oxidative damage mechanism for antibiotic killing do not support the generality of the hypothesis.

Authors: Iris Keren, Yanxia Wu, Julio Inocencio, Lawrence R. Mulcahy, Kim Lewis

An interaction of the deacetylase SIRT1 with its substrate offers a possible explanation for some effects on aging. [Also see Perspective by Yuan and Marmorstein]

Authors: Basil P. Hubbard, Ana P. Gomes, Han Dai, Jun Li, April W. Case, Thomas Considine, Thomas V. Riera, Jessica E. Lee, Sook Yen E, Dudley W. Lamming, Bradley L. Pentelute, Eli R. Schuman, Linda A. Stevens, Alvin J. Y. Ling, Sean M. Armour, Shaday Michan, Huizhen Zhao, Yong Jiang, Sharon M. Sweitzer, Charles A. Blum, Jeremy S. Disch, Pui Yee Ng, Konrad T. Howitz, Anabela P. Rolo, Yoshitomo Hamuro, Joel Moss, Robert B. Perni, James L. Ellis, George P. Vlasuk, David A. Sinclair

Prostate tumors in mice recruit thymus-derived regulatory T cells that are specific for tissue autoantigens. [Also see Perspective by Joshi and Jacks]

Authors: Sven Malchow, Daniel S. Leventhal, Saki Nishi, Benjamin I. Fischer, Lynn Shen, Gladell P. Paner, Ayelet S. Amit, Chulho Kang, Jenna E. Geddes, James P. Allison, Nicholas D. Socci, Peter A. Savage

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