1、sciencemag.org SCIENCE1494 24 JUNE 2016 VOL 352 ISSUE 62931200 New York Avenue,NW,Washington,DC 20005Bateman House,82-88 Hills Road,Cambridge,UK CB2 1LQEditor-in-Chief Marcia McNuttExecutive Editor Monica M.Bradford News Editor Tim AppenzellerManaging Editor,Research Journals Katrina L.KelnerDeputy
2、Editors Lisa D.Chong,Andrew M.Sugden(UK),Valda J.Vinson,Jake S.YestonResearch and InsightsDEPUTY EDITOR,EMERITUS Barbara R.Jasny SR.EDITORS Caroline Ash(UK),Gilbert J.Chin,Julia Fahrenkamp-Uppenbrink(UK),Pamela J.Hines,Stella M.Hurtley(UK),Paula A.Kiberstis,Marc S.Lavine(Canada),Kristen L.Mueller,Ia
3、n S.Osborne(UK),Beverly A.Purnell,L.Bryan Ray,Guy Riddihough,H.Jesse Smith,Jelena Stajic,Peter Stern(UK),Phillip D.Szuromi,Sacha Vignieri,Brad Wible,Nicholas S.Wigginton,Laura M.Zahn ASSOCIATE EDITORS Brent Grocholski,Keith T.Smith ASSOCIATE BOOK REVIEW EDITOR Valerie B.Thompson LETTERS EDITOR Jenni
4、fer Sills CHIEF CONTENT PRODUCTION EDITOR Cara Tate SR.CONTENT PRODUCTION EDITORS Harry Jach,Lauren Kmec CONTENT PRODUCTION EDITORS Jeffrey E.Cook,Chris Filiatreau,Cynthia Howe,Barbara P.Ordway,Catherine Wolner SR.EDITORIAL COORDINATORS Carolyn Kyle,Beverly Shields EDITORIAL COORDINATORS Aneera Dobb
5、ins,Joi S.Granger,Lisa Johnson,Anita Wynn PUBLICATIONS ASSISTANTS Jeffrey Hearn,Dona Mathieu,Le-Toya Mayne Flood,Shannon McMahon,Scott Miller,Caitlyn Phillips,Jerry Richardson,Alice Whaley(UK),Brian White EXECUTIVE ASSISTANT Anna Bashkirova ADMINISTRATIVE SUPPORT Janet Clements(UK),Lizanne Newton(UK
6、),Maryrose MadridNewsNEWS MANAGING EDITOR John Travis INTERNATIONAL EDITOR Richard Stone DEPUTY NEWS EDITORS Robert Coontz,Elizabeth Culotta,David Grimm,David Malakoff,Leslie Roberts CONTRIBUING EDITOR Martin Enserink(Europe)SR.CORRESPONDENTS Daniel Clery(UK),Jeffrey Mervis,Elizabeth Pennisi NEWS WR
7、ITERS Adrian Cho,Jon Cohen,Jennifer Couzin-Frankel,Carolyn Gramling,Eric Hand,Jocelyn Kaiser,Catherine Matacic,Kelly Servick,Robert F.Service,Erik Stokstad(Cambridge,UK),Emily Underwood INTERNS Patrick Monahan CONTRIBUTING CORRESPONDENTS John Bohannon,Warren Cornwall,Ann Gibbons,Mara Hvistendahl,Sam
8、 Kean,Eli Kintisch,Kai Kupferschmidt(Berlin),Andrew Lawler,Christina Larson(Beijing),Mitch Leslie,Charles C.Mann,Eliot Marshall,Virginia Morell,Dennis Normile(Shanghai),Heather Pringle,Tania Rabesandratana(London),Gretchen Vogel(Berlin),Lizzie Wade(Mexico City)CAREERS Donisha Adams,Rachel Bernstein(
9、Editor)COPY EDITORS Julia Cole,Dorie Chevlen,Jennifer Levin(Chief)ADMINISTRATIVE SUPPORT Jessica AdamsExecutive Publisher Rush D.HoltPublisher Bill Moran Chief Digital Media Officer Rob CoveyBUSINESS OPERATIONS AND PORTFOLIO MANAGEMENT DIRECTOR Sarah Whalen PRODUCT DEVELOPMENT DIRECTOR Will Schweitz
10、er PRODUCT DEVELOPMENT ASSOCIATE Hannah Heckner BUSINESS SYSTEMS AND FINANCIAL ANALYSIS DIRECTOR Randy Yi MANAGER OF FULFILLMENT SYSTEMS Neal Hawkins SYSTEMS ANALYST Nicole Mehmedovich DIRECTOR,BUSINESS OPERATIONS&ANALYSIS Eric Knott MANAGER,BUSINESS OPERATIONS Jessica Tierney SENIOR BUSINESS ANALYS
11、T Cory Lipman BUSINESS ANALYSTS David Garrison,Meron Kebede,Sandy Kim FINANCIAL ANALYST Drew Sher DIRECTOR,COPYRIGHTS LICENSING SPECIAL PROJECTS Emilie David PERMISSIONS ASSOCIATE Elizabeth Sandler RIGHTS,CONTRACTS,AND LICENSING ASSOCIATE Lili Kiser RIGHTS&PERMISSIONS ASSISTANT Alexander LeeMARKETIN
12、G DIRECTOR Elise Swinehart ASSOCIATE MARKETING DIRECTOR Stacey Burke Bowers MARKETING ASSOCIATE Steven Goodman CREATIVE DIRECTOR Scott Rodgerson SENIOR ART ASSOCIATES Paula Fry ART ASSOCIATE Kim Huynh PROGRAM DIRECTOR,AAAS MEMBER CENTRAL Peggy Mihelich FULFILLMENT SYSTEMS AND OPERATIONS membershipaa
13、as.org MANAGER,MEMBER SERVICES Pat Butler SPECIALISTS Terrance Morrison,Latasha Russell MANAGER,DATA ENTRY Mickie Napoleoni DATA ENTRY SPECIALISTS Brenden Aquilino,Fiona Giblin MARKETING ASSOCIATE Isa Sesay-BahPUBLISHER RELATIONS,EASTERN REGION Keith Layson PUBLISHER RELATIONS,WESTERN REGION Ryan Re
14、xroth SALES RESEARCH COORDINATOR Aiesha Marshall MANAGER,SITE LICENSE OPERATIONS Iquo Edim SENIOR OPERATIONS ANALYST Lana Guz FULFILLMENT ANALYST Judy LillibridgeWEB TECHNOLOGIES PORTFOLIO MANAGER Trista Smith TECHNICAL MANAGER Chris Coleman PROJECT MANAGER Nick Fletcher DEVELOPERS Ryan Jensen,Jimmy
15、 Marks,Brandon MorrisonDIGITAL MEDIA DIRECTOR OF ANALYTICS Enrique Gonzales DIGITAL REPORTING ANALYST Eric Hossinger SR.WEB PRODUCER Sarah Crespi WEB PRODUCER Alison Crawford VIDEO PRODUCER Nguyen Nguyen SOCIAL MEDIA PRODUCER Brice RussDIRECTOR OF OPERATIONS PRINT AND ONLINE Lizabeth Harman DIGITAL/
16、PRINT STRATEGY MANAGER Jason Hillman QUALITY TECHNICAL MANAGER Marcus Spiegler PROJECT ACCOUNT MANAGER Tara Kelly DIGITAL PRODUCTION MANAGER Lisa Stanford ASSISTANT MANAGER DIGITAL/PRINT Rebecca Doshi SENIOR CONTENT SPECIALISTS Steve Forrester,Antoinette Hodal,Lori Murphy,Anthony Rosen CONTENT SPECIALISTS Jacob Hedrick,Kimberley OsterDESIGN DIRECTOR Beth Rakouskas DESIGN EDITOR Marcy Atarod SENIOR DESIGNERS Garvin Grulln,Chrystal Smith GRAPHICS MANAGING EDITOR Alberto Cuadra SENIOR SCIENTIFIC IL
