CONTENTS
EDITORIAL
461 Visa Labyrinth
Martyn Poliakoff
NEWS OF THE WEEK
468 A roundup of the week’s top stories
NEWS & ANALYSIS
471 Neandertals and Moderns
Made Imperfect Mates
>> Science Express Report
by B. Vernot and J. M. Akey
472 Ecosystems Say ‘Pass the Salt!’
>> Science Podcast
473 Suspect Drug Research Blamed
for Massive Death Toll
475 Online Video Game Plugs Players Into
Remote-Controlled Biochemistry Lab
476 Editing of Targeted Genes
Proved Possible in Monkeys
477 Antioxidants Could Spur Tumors
by Acting on Cancer Gene
>> Science Translational Medicine
Research Article by V. I. Sayin et al.
NEWS FOCUS
478 The Dangerous Professor
482 Quantum Spy Games
>> Science Podcast
LETTERS
484 Sea Turtle Funding Dries Up
P. Plotkin and J. Bernardo
Fueling Innovation
R. W. Nichols
Research Tax Credits: An Important Tool
D. J. Hemel and L. L. Ouellette
The Changing Role of Medieval Women
R. E. Blanton
486 CORRECTIONS AND CLARIFICATIONS
BOOKS ET AL.
487 Consciousness and the Brain
S. Dehaene, reviewed by C. Koch
488 Dancing with the River
K. Lahiri-Dutt and G. Samanta,
reviewed by C. W. Nuckolls
POLICY FORUM
489 Drug Policy as Conservation Policy:
Narco-Deforestation
K. McSweeney et al.
PERSPECTIVES
491 Chemical Warfare in the Battle of the Sexes
D. E. L. Promislow and M. Kaeberlein
>> Reports pp. 536, 541, and 544
492 When Electrons Leave Holes in Organic
Solar Cells
J.-L. Bredas
>> Report p. 512
493 Methane on the Rise—Again
E. G. Nisbet et al.
495 Selecting the Direction of Sound
Transmission
S. A. Cummer
>> Report p. 516
496 Pathogen Specialization
G. Coaker
>> Report p. 552
497 A Unified Process for Neurological Disease
A. B. Singleton
>> Research Article p. 506
498 Delayed Gratification—Waiting
to Terminate Stem Cell Identity
X. Zhang
>> Research Article p. 505
CONTENTS continued >>
Volume 343 Issue 6170
COVER
A circulator for sound. The arrows represent acoustic signals
flowing through the device (diameter: ~20 centimeters), which
circulates sound in a nonreciprocal fashion: Signals can flow from
left to top, from top to right, and from right to left, but not in the
opposite directions. This creates one-way communication channels
for sound, allowing listeners to hear but not be heard in return.
See pages 495 and 516.
Image: Erik Zumalt, Cockrell School of Engineering, The University of
Texas at Austin
DEPARTMENTS
460 This Week in Science
462 Editors’ Choice
466 Science Staff
500 AAAS News & Notes
557 New Products
558 Science Careers
page 482
page 488
ON THE WEB THIS WEEK
>> Science Podcast
Listen to stories on the quantum cryptography
arms race, salt-starved ecosystems, and more.
>> Find More Online
Check out the latest in a series of Perspectives
on Challenges in Climate Science at
www.sciencemag.org/extra/climate.
