Editorials

Science in the Arab world p1027

The immense challenges facing those who attempt to support research in developing countries are compounded by political turmoil in the Middle East.

doi:10.1038/4411027a

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A tale of one world p1028

Celebrating science on the solstice.

doi:10.1038/4411028a

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Action stations p1028

The time for sitting on flu data is over.

doi:10.1038/4411028b

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Research Highlights

Research highlights p1030

doi:10.1038/4411030a

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News

Academy affirms hockey-stick graph p1032

But it criticizes the way the controversial climate result was used.

Geoff Brumfiel

doi:10.1038/4411032a

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Experts comb tropics for clues to vCJD p1033

Fate of ex-cannibals suggests prion diseases can incubate for half a century.

Helen Pearson

doi:10.1038/4411033a

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Sidelines p1034

doi:10.1038/4411034a

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Hungary's science academy slammed as 'obsolete' p1034

Government and researchers complain of old-fashioned and discriminatory policies.

Quirin Schiermeier

doi:10.1038/4411034b

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Hunt for AIDS vaccine tackles genomes p1034

Systematic search for HIV immunity proposed.

Erika Check

doi:10.1038/4411034c

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Scientists become targets in Iraq p1036

Violence is common currency in Iraq, but one group is increasingly and persistently singled out — academics. Declan Butler reports on the risks run by researchers as they struggle to pursue their studies.

doi:10.1038/4411036a

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Human eggs supply 'ethical' stem cells p1038

Use of parthenogenetic lines could side step moral issues.

Jo Marchant

doi:10.1038/4411038a

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News in brief p1039

doi:10.1038/4411039a

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Correction p1039

doi:10.1038/4411039a

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News Feature

Science on the solstice p1040

Every day, all over the planet and beyond it, scientists try to make sense of the world in which they live. Here we present a composite picture of just one day — 21 June 2006, the Northern summer solstice.

doi:10.1038/4411040a

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Business

Assault on batteries p1046

Miniature fuel cells are being developed as an alternative way to power portable devices. But they're not ready yet, as Kurt Kleiner reports.

doi:10.1038/4411046a

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In brief p1047

doi:10.1038/4411047a

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Market watch p1047

Colin Macilwain

doi:10.1038/4411047b

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Correspondence

Seeing is believing as brain reveals its adaptability p1048

Oliver Sacks and Ralph M. Siegel

doi:10.1038/4411048a

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Discrete reminder about Weismann's discovery p1048

William L. Abler

doi:10.1038/4411048b

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Researchers frustrated by lack of input to NIH policy p1048

Don C. Rockey

doi:10.1038/4411048c

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Public will fear biological accidents, not just attacks p1048

Markus Schmidt

doi:10.1038/4411048d

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Correction p1048

doi:10.1038/4411048e

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Books and Arts

Faster, better, healthier p1049

An exploration of how genetics has influenced many aspects of life.

Michael A. Goldman reviews The Strongest Boy In The World: How Genetic Information Is Reshaping Our Lives by Philip R. Reilly

doi:10.1038/4411049a

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A glimpse of the early Universe p1050

Patrick Petitjean reviews Chasing Hubble's Shadows: The Search for Galaxies at the Edge of Time by Jeff Kanipe

doi:10.1038/4411050a

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A question of taste p1051

John Piggott reviews Molecular Gastronomy: Exploring the Science of Flavor by Hervé This

doi:10.1038/4411051a

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Correction p1051

doi:10.1038/4411051b

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News and Views

Quantum physics: Atomic gas in flatland p1053

The observation of Bose–Einstein condensation in an atomic gas was a seminal result. Two-dimensional gases are more complex, and an intriguing interference experiment has exposed a different superfluid transition.

Tilman Esslinger and Gianni Blatter

doi:10.1038/4411053a

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Structural biology: RNA switches function p1054

Proteins are not the only regulators of metabolite synthesis — some RNA molecules do it too. These RNAs lack chemical diversity, so how do we explain the variety of their respective substrates?

Steve Reichow and Gabriele Varani

doi:10.1038/4411054a

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Materials science: Germanium takes holey orders p1055

Soap-like molecules serve as a scaffold for remarkably well-ordered, porous germanium skeletons. The nanometre-sized features of these semiconductor frameworks confer unique optical and electronic properties.

Andreas Stein

doi:10.1038/4411055a

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Astronomy: Supernovae brought to light p1056

The existing catalogue of Galactic supernova remnants contains only a small fraction of the true number of these stellar explosions. A different observational technique is being employed to find the missing ones.

Carl Heiles

doi:10.1038/4411056a

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Neurodegenerative disease: Pink, parkin and the brain p1058

Dysfunctions in a number of cellular pathways can cause Parkinson's disease. Fruitflies with mutations in a protein called PINK1 show that there might be some unsuspected interplay between two such pathways.

Leo Pallanck and J. Timothy Greenamyre

doi:10.1038/4411058a

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Articles

Genetic evidence for complex speciation of humans and chimpanzees p1103

Nick Patterson, Daniel J. Richter, Sante Gnerre, Eric S. Lander and David Reich

doi:10.1038/nature04789

Abstract | Full Text | PDF (327K) | Supplementary information

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Ovulated oocytes in adult mice derive from non-circulating germ cells p1109

Kevin Eggan, Sara Jurga, Roger Gosden, Irene M. Min and Amy J. Wagers

doi:10.1038/nature04929

Abstract | Full Text | PDF (581K) | Supplementary information

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Letters

Soft equations of state for neutron-star matter ruled out by EXO 0748 - 676 p1115

F. Özel

doi:10.1038/nature04858

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Berezinskii–Kosterlitz–Thouless crossover in a trapped atomic gas p1118

Zoran Hadzibabic, Peter Krüger, Marc Cheneau, Baptiste Battelier and Jean Dalibard

doi:10.1038/nature04851

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Mesostructured germanium with cubic pore symmetry p1122

Gerasimos S. Armatas and Mercouri G. Kanatzidis

doi:10.1038/nature04833

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Hexagonal nanoporous germanium through surfactant-driven self-assembly of Zintl clusters p1126

Dong Sun, Andrew E. Riley, Ashley J. Cadby, Erik K. Richman, Scott D. Korlann and Sarah H. Tolbert

doi:10.1038/nature04891

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Subcontinental-scale crustal velocity changes along the Pacific–North America plate boundary p1131

J. L. Davis, B. P. Wernicke, S. Bisnath, N. A. Niemi and P. Elósegui

doi:10.1038/nature04781

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Seismic waves increase permeability p1135

Jean E. Elkhoury, Emily E. Brodsky and Duncan C. Agnew

doi:10.1038/nature04798

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Diversity and dispersal interactively affect predictability of ecosystem function p1139

Kristin E. France and J. Emmett Duffy

doi:10.1038/nature04729

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Activity-dependent dynamics and sequestration of proteasomes in dendritic spines p1144

Baris Bingol and Erin M. Schuman

doi:10.1038/nature04769

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Nodulation independent of rhizobia induced by a calcium-activated kinase lacking autoinhibition p1149

Cynthia Gleason, Shubho Chaudhuri, Tianbao Yang, Alfonso Muñoz, B. W. Poovaiah and Giles E. D. Oldroyd

doi:10.1038/nature04812

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Deregulation of a Ca²⁺/calmodulin-dependent kinase leads to spontaneous nodule development p1153

Leïla Tirichine, Haruko Imaizumi-Anraku, Satoko Yoshida, Yasuhiro Murakami, Lene H. Madsen, Hiroki Miwa, Tomomi Nakagawa, Niels Sandal, Anita S. Albrektsen, Masayoshi Kawaguchi, Allan Downie, Shusei Sato, Satoshi Tabata, Hiroshi Kouchi, Martin Parniske, Shinji Kawasaki and Jens Stougaard

doi:10.1038/nature04862

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Mitochondrial dysfunction in Drosophila PINK1 mutants is complemented by parkin p1157

Jeehye Park, Sung Bae Lee, Sungkyu Lee, Yongsung Kim, Saera Song, Sunhong Kim, Eunkyung Bae, Jaeseob Kim, Minho Shong, Jin-Man Kim and Jongkyeong Chung

doi:10.1038/nature04788

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Drosophila pink1 is required for mitochondrial function and interacts genetically with parkin p1162

Ira E. Clark, Mark W. Dodson, Changan Jiang, Joseph H. Cao, Jun R. Huh, Jae Hong Seol, Soon Ji Yoo, Bruce A. Hay and Ming Guo

doi:10.1038/nature04779

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Structural basis for gene regulation by a thiamine pyrophosphate-sensing riboswitch p1167

Alexander Serganov, Anna Polonskaia, Anh Tuân Phan, Ronald R. Breaker and Dinshaw J. Patel

doi:10.1038/nature04740

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Structure of the S-adenosylmethionine riboswitch regulatory mRNA element p1172

Rebecca K. Montange and Robert T. Batey

doi:10.1038/nature04819

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Retraction: Induction of DNA methylation and gene silencing by short interfering RNAs in human cells p1176

Hiroaki Kawasaki and Kazunari Taira

doi:10.1038/nature04952

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Technology Features

Cell sorting: Divide and conquer p1179

A key element of performing good cell-biology experiments is starting with exactly the right cells. Michael Eisenstein takes a look at the technologies that can make this possible.

Michael Eisenstein

doi:10.1038/4411179a

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Cell sorting: The gentle touch p1179

doi:10.1038/4411179b

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Cell sorting: Playing the field p1181

doi:10.1038/4411181a

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Cell sorting: The guiding light p1183

doi:10.1038/4411183a

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Naturejobs

Prospect p1191

Research assessment threatens to reshuffle UK funding.

Paul Smaglik

doi:10.1038/nj7097-1191a

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Gary Borisy, director and chief executive, Marine Biological Laboratory, Woods Hole, Massachusetts p1192

Gary Borisy takes the helm at the Marine Biological Laboratory.

Virginia Gewin

doi:10.1038/nj7097-1192a

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Networks work p1192

Networking can pay off for PhD students.

Denis Bilotta

doi:10.1038/nj7097-1192b

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Goooaaalll! A PhD! p1192

Thesis excitement rivals the World Cup.

Milan de Vries

doi:10.1038/nj7097-1192c

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Futures

Finding a happy medium p1194

Be careful what you think out loud...

John Gilbey

doi:10.1038/4411194a

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