CREDITS:(FROMTOP)©DAVIDMOSKOWITZ;LEOCORREA/APIMAGES7SEPTEMBER2018•VOL361ISSUE6406949SCIENCEsciencemag.org7SEPTEMBER2018•VOLUME361•ISSUE6406CONTENTS962Isittoocostlytosavesomecaribouherds?INSIGHTSBOOKSETAL.966NEWBOOKS,FRESHFORFALLPERSPECTIVES972LEARNINGTOMIGRATEHoofedanimals,suchasbighornsheepandmoose,learnmigratorybehaviorsfromotherherdmembersByM.Festa-Bianchet▶REPORTP.1023974MATCHMAKINGMOLECULEFOREGGANDSPERMSpecies-specificrecognitionmoleculefacilitatesspermbindingtoeggsatfertilizationByR.Lehmann▶REPORTP.1029975ABRAINBOOSTTOFIGHTALZHEIMER’SDISEASEAmousemodelofAlzheimer’sdiseaseprovidescluesaboutwhyexerciseisgoodformemoryByT.L.Spires-JonesandC.W.Ritchie▶RESEARCHARTICLEP.991976TOGROWANDTODEFENDAricetranscriptionfactor’sdualrolescouldimproveyieldanddiseaseresistanceByG.H.GreeneandX.Dong▶REPORTP.1026978ARADICALAPPROACHTOSOOTFORMATIONChainreactionsofresonance-stabilizedradicalsturnmoleculesintoclustersandnanoparticlesByM.ThomsonandT.Mitra▶REPORTP.997979COMPUTATIONALASTROPHYSICSFORTHEFUTUREAnopen,modularapproachwithagreedstandardswouldfacilitateastrophysicaldiscoveryByS.PortegiesZwartPOLICYFORUM981DENUCLEARIZINGNORTHKOREA:AVERIFIED,PHASEDAPPROACHTheprocessmustreflectexistinglevelsoftrustateachstageByA.GlaserandZ.MianLETTERS984CALLFORNEWAAASHARASSMENTPOLICYByN.E.Selinetal.984IMPROVINGSOCIETIES’HARASSMENTPOLICIESByA.Anbaretal.985OUTSIDETHETOWER:SCIENCEENGAGEMENTINSOUTHAFRICAByJ.M.HulbertandF.Roets985ERRATAFiredestroyspricelessspecimensattheNationalMuseumofBrazil.961RENEWEDSANCTIONSSTRANGLESCIENCEINIRANBraindrainfearedamideconomicwoesandfrayinginternationalcollaborationsByR.StoneFEATURES962SHOULDITBESAVED?ProposalstofocusresourcesonsomeendangeredspeciesandletothersgoextinctarestirringfiercedebateByW.Cornwall965HowtriagebecameadirtywordByW.Cornwall▶PODCAST960NEWSINBRIEF954NewsataglanceINDEPTH956U.N.TACKLESGENEPROSPECTINGONTHEHIGHSEASTalksonmarinebiodiversitypactmarkedbynorth-southdivideongeneticresourcesByE.Kintisch957EUROPEANFUNDERSSEEKTOENDREIGNOFPAYWALLEDJ...
