Safety catch p.223

doi: 10.1038/442223b

WHO's in charge? p.223

doi: 10.1038/442223a

Save the lungfish p.224

doi: 10.1038/442224a

Moving towards a graphene world p.228

doi: 10.1038/442228a

It's legal: Italian researchers defend their work with embryonic stem cells p.229

doi: 10.1038/442229a

Concerns grow over secrecy of bubble-fusion inquiry p.230

doi: 10.1038/442230b

Sidelines p.230

doi: 10.1038/442230a

From aircraft engineer to FBI suspect p.232

doi: 10.1038/442232a

Dam project threatens living fossil p.232

doi: 10.1038/442232b

'You can't have a mission without a camera' p.234

doi: 10.1038/442234a

News in brief p.235

doi: 10.1038/442235a

p.238

doi: 10.1038/442238a

p.242

doi: 10.1038/442242a

p.251

doi: 10.1038/442251a

p.252

doi: 10.1038/442252a

p.254

doi: 10.1038/442254a

Clicks and chips p.254

doi: 10.1038/442254b

p.255

doi: 10.1038/442255a

doi: 10.1038/nature04963

Structural asymmetry and the stability of diverse food webs p.265

doi: 10.1038/nature04887

Mechanism of DNA translocation in a replicative hexameric helicase p.270

doi: 10.1038/nature04943

An X-ray-emitting blast wave from the recurrent nova RS Ophiuchi p.276

doi: 10.1038/nature04893

An asymmetric shock wave in the 2006 outburst of the recurrent nova RS Ophiuchi p.279

doi: 10.1038/nature04949

Graphene-based composite materials p.282

doi: 10.1038/nature04969

Seismic reflection images of the Moho underlying melt sills at the East Pacific Rise p.287

doi: 10.1038/nature04939

Magma-maintained rift segmentation at continental rupture in the 2005 Afar dyking episode p.291

doi: 10.1038/nature04978

An RNA-dependent RNA polymerase is required for paramutation in maize p.295

doi: 10.1038/nature04884

Kruppel-like factor 2 regulates thymocyte and T-cell migration p.299

doi: 10.1038/nature04882

TBC-domain GAPs for Rab GTPases accelerate GTP hydrolysis by a dual-finger mechanism p.303

doi: 10.1038/nature04847

The putative oncogene GASC1 demethylates tri- and dimethylated lysine 9 on histone H3 p.307

doi: 10.1038/nature04837

The transcriptional repressor JHDM3A demethylates trimethyl histone H3 lysine 9 and lysine36 p.312

doi: 10.1038/nature04853

Atom-by-atom analysis of global downhill protein folding p.317

doi: 10.1038/nature04859

Ecological networks and their fragility p.259

doi: 10.1038/nature04927