Magnetic field strength in the early solar system is recorded in chondrules within a meteorite born of the asteroid Vesta. Authors: Roger R. Fu, Benjamin P. Weiss, Eduardo A. Lima, Richard J. Harrison, Xue-Ning Bai, Steven J. Desch, Denton S. Ebel, Clément Suavet, Huapei Wang, David Glenn, David Le Sage, Takeshi Kasama, Ronald L. Walsworth, Aaron T. Kuan

Multilayer graphene efficiently dissipates the kinetic energy of a penetrating microprojectile. Authors: Jae-Hwang Lee, Phillip E. Loya, Jun Lou, Edwin L. Thomas

Surface roughness alone can make a material superrepellent to almost any liquid. Authors: Tingyi “Leo” Liu, Chang-Jin “CJ” Kim

X-ray analysis identifies magnesium silicate perovskite, now known as bridgmanite, in a heavily shocked meteorite. [Also see Perspective by Sharp] Authors: Oliver Tschauner, Chi Ma, John R. Beckett, Clemens Prescher, Vitali B. Prakapenka, George R. Rossman

Atmospheric deposition of nitrogen from Asian pollution has increased the nitrate concentration of the upper North Pacific Ocean. Authors: Il-Nam Kim, Kitack Lee, Nicolas Gruber, David M. Karl, John L. Bullister, Simon Yang, Tae-Wook Kim

People appear to update long-term lists of memories so as to retain only the most recent entries. [Also see Perspective by Rubin] Authors: H. L. Roediger, K. A. DeSoto

Cell division and mitochondrial protein import are directly linked by cyclin-dependent phosphorylation of a mitochondrial assembly factor. [Also see Perspective by Schulz and Rehling] Authors: Angelika B. Harbauer, Magdalena Opalińska, Carolin Gerbeth, Josip S. Herman, Sanjana Rao, Birgit Schönfisch, Bernard Guiard, Oliver Schmidt, Nikolaus Pfanner, Chris Meisinger

An ancient human genome illuminates human demography in Eurasia and Europe. Authors: Andaine Seguin-Orlando, Thorfinn S. Korneliussen, Martin Sikora, Anna-Sapfo Malaspinas, Andrea Manica, Ida Moltke, Anders Albrechtsen, Amy Ko, Ashot Margaryan, Vyacheslav Moiseyev, Ted Goebel, Michael Westaway, David Lambert, Valeri Khartanovich, Jeffrey D. Wall, Philip R. Nigst, Robert A. Foley, Marta Mirazon Lahr, Rasmus Nielsen, Ludovic Orlando, Eske Willerslev

Preventing nidogen-tetanus toxin interaction at the neuromuscular junction can protect mice from tetanus-induced spastic paralysis. Authors: Kinga Bercsenyi, Nathalie Schmieg, J. Barney Bryson, Martin Wallace, Paola Caccin, Matthew Golding, Giuseppe Zanotti, Linda Greensmith, Roswitha Nischt, Giampietro Schiavo

T cells follow a linear calculation when integrating costimulatory and cytokine signals. Authors: Julia M. Marchingo, Andrey Kan, Robyn M. Sutherland, Ken R. Duffy, Cameron J. Wellard, Gabrielle T. Belz, Andrew M. Lew, Mark R. Dowling, Susanne Heinzel, Philip D. Hodgkin

Staggered cuts by the exonuclease FAN1 in cross-linked DNA remove the cross-linked bases, allowing the DNA to be repaired. Authors: Renjing Wang, Nicole S. Persky, Barney Yoo, Ouathek Ouerfelli, Agata Smogorzewska, Stephen J. Elledge, Nikola P. Pavletich

A weekly roundup of information on newly offered instrumentation, apparatus, and laboratory materials of potential interest to researchers.

The Western Hemisphere is experiencing a drought of crisis proportions. In Central America, crops are failing, millions are in danger of starvation, and if the drought doesn't break soon, even vessels transiting the Panama Canal will need to lighten their loads, which will increase prices for goods transported globally. In the western United States, the drought-stricken region spans a vast area responsible for much of the nation's fruits, vegetables, and beef. As the drought's grip has tightened, water users have turned to tapping groundwater aquifers to make up the deficit for people, crops, livestock, and industry. But even when the rain does return, regreening the landscape and filling again the streams, lakes, and reservoirs, those aquifers will remain severely depleted. It is this underground drought we can't see that is enduring, worrisome, and in need of attention. Author: Marcia McNutt

U.S. agency ponders future of innovative reintroduction as animal deaths and controversy mount. Author: Erik Stokstad

Ecologist Marten Scheffer became a leader in the science of tipping points by studying lakes. Now he's making waves in many other fields. Author: Gabriel Popkin

Despite years of delay, Fermilab's massive new experiment has a chance to take the next big step in neutrino physics. Author: Adrian Cho

Changes in the perception and goals of nature conservation require a solid scientific basis Author: Georgina M. Mace

Partial deficiency in the protein CTLA4 underlies severe autoimmune disease with incomplete penetrance [Also see Report by Kuehn et al.] Authors: Frédéric Rieux-Laucat, Jean-Laurent Casanova

Human and veterinary health systems must be better integrated if rabies is to be controlled Authors: Felix Lankester, Katie Hampson, Tiziana Lembo, Guy Palmer, Louise Taylor, Sarah Cleaveland

Water plays a key role in gold-catalyzed CO oxidation [Also see Report by Saavedra et al.] Authors: Gregory M. Mullen, C. Buddie Mullins

Tissue patterning is specified relative to growth through differences between cell proliferation and the differentiation rates [Also see Research Article by Kicheva et al.] Author: Olivier Pourquie

Earth-abundant materials show promise for solar hydrogen production [Also see Report by Luo et al.] Author: Thomas Hamann

Carbon monoxide reveals new possibilities for substrate binding in nitrogenase [Also see Report by Spatzal et al.] Author: Martin Högbom

A monthly roundup of recent news and projects of Science's publisher, the American Association for the Advancement of Science.

A complex network makes simple pores | Crustal rebound from water drawdown | Mysterious dinosaur a swimmer? | Easier oxidation over gold with added water | Beware of T cells that don't know how to stop | Closing the loop on neuroprosthetic control | Hot electron plasma moves in from Io | Preventing vascular scarring after surgery | Differentiation rates regulate pool sizes | Carbon chains branch out on space dust | Nature or nurture for solar system ices? | A BLUEPRINT of immune cell development | Making nitrogen available for biosynthesis | The power of a pair of perovskites | Breaking down a Criegee intermediate | An early assemblage of obsidian artifacts | How plant species diversity is shaped | Animal behavior follows rewards | Views of nature, views of conservation

Timing counts for whisker development | Animal behavior follows dopamine rewards | Bring out your dead — hungry receptors await | An Arabian wintertime bloom on the rise | Hate and violence spread through the air | Social complexity creates brainy parrots | Teaching tolerance stops the bleeding | Constructing a maze full of phosphines

Embryonic chick and mouse reveal how neural tube differentiation takes on new strategies as development progresses. [Also see Perspective by Pourquie] Authors: Anna Kicheva, Tobias Bollenbach, Ana Ribeiro, Helena Pérez Valle, Robin Lovell-Badge, Vasso Episkopou, James Briscoe

Genome-wide approaches analyze human monocyte differentiation in vitro into functional macrophages. Authors: Sadia Saeed, Jessica Quintin, Hindrik H. D. Kerstens, Nagesha A. Rao, Ali Aghajanirefah, Filomena Matarese, Shih-Chin Cheng, Jacqueline Ratter, Kim Berentsen, Martijn A. van der Ent, Nilofar Sharifi, Eva M. Janssen-Megens, Menno Ter Huurne, Amit Mandoli, Tom van Schaik, Aylwin Ng, Frances Burden, Kate Downes, Mattia Frontini, Vinod Kumar, Evangelos J. Giamarellos-Bourboulis, Willem H. Ouwehand, Jos W. M. van der Meer, Leo A. B. Joosten, Cisca Wijmenga, Joost H. A. Martens, Ramnik J. Xavier, Colin Logie, Mihai G. Netea, Hendrik G. Stunnenberg

Epigenetic profiling identifies the cellular metabolic substrate of innate immune memory. Authors: Shih-Chin Cheng, Jessica Quintin, Robert A. Cramer, Kelly M. Shepardson, Sadia Saeed, Vinod Kumar, Evangelos J. Giamarellos-Bourboulis, Joost H. A. Martens, Nagesha Appukudige Rao, Ali Aghajanirefah, Ganesh R. Manjeri, Yang Li, Daniela C. Ifrim, Rob J. W. Arts, Brian M. J. W. van der Meer, Peter M. T. Deen, Colin Logie, Luke A. O’Neill, Peter Willems, Frank L. van de Veerdonk, Jos W. M. van der Meer, Aylwin Ng, Leo A. B. Joosten, Cisca Wijmenga, Hendrik G. Stunnenberg, Ramnik J. Xavier, Mihai G. Netea

RNA sequencing identifies how different cell fate decisions are made during blood cell differentiation. Authors: Lu Chen, Myrto Kostadima, Joost H. A. Martens, Giovanni Canu, Sara P. Garcia, Ernest Turro, Kate Downes, Iain C. Macaulay, Ewa Bielczyk-Maczynska, Sophia Coe, Samantha Farrow, Pawan Poudel, Frances Burden, Sjoert B. G. Jansen, William J. Astle, Antony Attwood, Tadbir Bariana, Bernard de Bono, Alessandra Breschi, John C. Chambers, , Fizzah A. Choudry, Laura Clarke, Paul Coupland, Martijn van der Ent, Wendy N. Erber, Joop H. Jansen, Rémi Favier, Matthew E. Fenech, Nicola Foad, Kathleen Freson, Chris van Geet, Keith Gomez, Roderic Guigo, Daniel Hampshire, Anne M. Kelly, Hindrik H. D. Kerstens, Jaspal S. Kooner, Michael Laffan, Claire Lentaigne, Charlotte Labalette, Tiphaine Martin, Stuart Meacham, Andrew Mumford, Sylvia Nürnberg, Emilio Palumbo, Bert A. van der Reijden, David Richardson, Stephen J. Sammut, Greg Slodkowicz, Asif U. Tamuri, Louella Vasquez, Katrin Voss, Stephen Watt, Sarah Westbury, Paul Flicek, Remco Loos, Nick Goldman, Paul Bertone, Randy J. Read, Sylvia Richardson, Ana Cvejic, Nicole Soranzo, Willem H. Ouwehand, Hendrik G. Stunnenberg, Mattia Frontini, Augusto Rendon