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大小:4.08 MB
页数:84页
时间:2019-03-11
《Scientific American January 2003 (tdr).pdf》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、7,000,000-YEAR-OLDSKULL:ANCESTOR?APE?ORDEADEND?TheNose-TicklingScienceofBubblyJANUARY2003$4.95WWW.SCIAM.COMCOPYRIGHT2002SCIENTIFICAMERICAN,INC.january2003SCIENTIFICAMERICANVolume288Number1THERAPY38NewLightonMedicine38Light-activatedtherapiesBYNICKLANELight-activatedtoxins
2、canfightcancer,blindnessandheartdisease.Theymayalsoexplainlegendsaboutvampires.INFORMATIONTECHNOLOGY46TheNanodriveProjectBYPETERVETTIGERANDGERDBINNIGInventingthefirstnanotechnologicaldatastoragedeviceformassproductionandconsumeruseisagiganticundertaking.PALEOANTHROPOLOGY54A
3、nAncestortoCallOurOwnBYKATEWONGIsaseven-million-year-oldcreaturefromChadtheoldestmemberofthehumanlineage?Canweeverreallyknow?NUTRITION64RebuildingtheFoodPyramidBYWALTERC.WILLETTANDMEIRJ.STAMPFERThesimplisticdietaryguideintroducedyearsagoobscuresthetruththatsomefatsareheal
4、thfulandmanycarbohydratesarenot.GEOLOGY72EarthquakeConversationsBYROSSS.STEINContrarytoexpectations,largeearthquakescaninteractwithnearbyfaults.Knowledgeofthisfactcouldhelppinpointfutureshocks.PHYSICS80TheScienceofBubblyBYGÉRARDLIGER-BELAIRAdeliciouslycomplexphysicsgovern
5、sthesparkleandpopofeffervescenceinchampagne.www.sciam.comSCIENTIFICAMERICAN3COPYRIGHT2002SCIENTIFICAMERICAN,INC.A1A2A3A193SCIENTIFICAMERICANVolume288Number1B1B2B3B1C1C2C3C4C5departmentsD1D2D3D4D5E1E2E3E4E58SAPerspectivesAbabystepforthecyborgs.F1F2F3F4F510HowtoContactUsG1G
6、2G3G4G510OntheWeb30H1H2H3H4H512Letters1650,100&150YearsAgo32Innovations18NewsScanCanesta’svirtualkeyboardisoneofthefirstexamplesofanewtypeofremotecontrol.■LittleFDAinterestinanimplantablechip.■NASAlooksagain,reluctantly,tothemoon.34StakingClaims■Micromarketingtofood-allerg
7、ysufferers.Entertainmentcompaniesseekingtopreventdigital■Aloopholeinthefour-colortheorem.theftheadforashowdownwithfair-useadvocates.■Refractivefracasoverthespeedoflight.36Profile:JeffreyD.Sachs■Vibratingshoesimprovebalance.TheColumbiaUniversityeconomistisbullishon■BytheNu
8、mbers:HeatingtheU.S.home.whatsciencecandotohelpthedevelopingworld.■DataPoints:Nursesneeded,stat!
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