Science Staf .............................................. 102
New Products ............................................. 185
Science Careers ......................................... 186
DEPAR TMEN TS
The communities of Science
By Jeremy Berg
190 WORKING LIFE
The questions that opened doors
By Carlos A. Aguilar-Trigueros
Thermally stable single-atom platinum-
on-ceria catalysts via atom trapping
J. Jones et al.
154 ANIMAL ROBOTICS
Tail use improves performance on soft
substrates in models of early vertebrate
land locomotors B. McInroe et al.
▶ PERSPEC TIVE P. 120
Phototactic guidance of a tissue-
engineered soft-robotic ray
S.-J. Park et al.
▶ NEWS STORY P. 110; VIDEO
163 NETWORK SCIENCE
Higher-order organization of complex
networks A. R. Benson et al.
▶ PERSPEC TIVE P. 123
166 PLANT SCIENCE
S-Acylation of the cellulose synthase
complex is essential for its plasma
membrane localization M. Kumar et al.
169 CLIMATE CHANGE
Climate-driven regime shift of a
temperate marine ecosystem
T. Wernberg et al.
172 STRUCTURAL BIOLOGY
Structural basis for membrane
anchoring of HIV-1 envelope spike
J. Dev et al.
Cilia-based flow network in the brain
ventricles R. Faubel et al.
Reengineering chimeric antigen
receptor T cells for targeted therapy of
autoimmune disease C. T. Ellebrecht et al.
ON THE COVER
A robotic stingray made
up of rat heart cells,
gold, and a polymer
commonly used in
breast implants. The
robot ray mimics the
form and function
of a swimming
stingray, but with a
twist: Genetically altered rat cells allow
the “creature” to sense and swim toward
light. See pages 110 and 158. For more
on the process behind the cover image,
Photo: Ken Richardson
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133 From Science and other journals
Asymmetric division of clonal
muscle stem cells coordinates
muscle regeneration in vivo
D. B. Gurevich et al.
RESEARCH ARTICLE SUMMARY; FOR FULL TEXT:
137 A metal-organic framework–based
splitter for separating propylene
from propane A. Cadiau et al.
141 Pore chemistry and size control
in hybrid porous materials for
acetylene capture from ethylene
X. Cui et al.
▶ PERSPECTIVE P. 121
144 ORGANIC CHEMISTRY
Copper-catalyzed asymmetric addition
of olefin-derived nucleophiles to ketones
Y. Yang et al.
120 & 154
131 SCIENCE STANDS BY 2009
By M. McNutt
131 INSUFFICIENT RESEARCH
ON LAND GRABBING
By C. Liao et al.
131 MEXICO STRUGGLES TO KEEP
By C. E. Ormsby et al.
132 TECHNICAL COMMENT ABSTRACTS
The transmembrane domain
of the HIV-1 Env protein