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Richardhasstudiedreportsofsimilardie-offsovertheyearsinriversaroundtheworld.Butsofarhehasnotcomeupwithmanyanswersaboutwhytheyhappened.SpeakingabouttheClinch,RichardsaidtherivercouldevenbecomparedtotheAmazonbecauseitcontainssomanydifferentkindsoflife.HespoketotheAPwhileexaminingtheriver'smusselpopulationinaruralcommunityinTennessee.Musselpopulationsaroundtheworldhavedroppedsharplyoverthepast100years.Scientistsblamethisonpollution,habitatlossandclimatechange.Buttheysuspectthemostrecentdecreaseshaveanothercause.Richardandhisteambelieveaninfectiousdiseasecouldberesponsible.Theteamiscomparinghealthypheasantshellmusselstodyingonesinanattempttonarrowdownalistofpossiblediseases."Alllivingthingsarechock-fullofmicroorganisms,andwedon'thaveanysortofmapforwhatishealthyinsideamussel,"Richardsaid.UniversityofWisconsindiseasespecialistTonyGoldbergishelpingwiththeinvestigation.Hespecializesinwildlifeillnessesofunknowncause.GoldbergtoldtheAPthatoftendiseaseisthefinalthingtokillaspeciesthathasalreadybeenharmedbyotherenvironmentalconditions.However,hesaysheishopefulthatthefreshwatermusselteamwillbeabletodiscoverthecauseofthemassivedie-offsandfindawaytopreventthem.TheteamincludesscientistsfromtheU.S.GeologicalSurveyandanonprofitconservationgroup."Iseeitasaraceagainsttime,notanimpossibletask,"Goldbergsaid,adding"...ifwelosethesemussels,theriverswealllovearenevergoingtobethesame."I'mBryanLynn.TheAssociatedPressreportedonthisstory.During2019,wecoveredsomebigdevelopmentsinvolvingcomputeranddevicetechnology.WealsoreportedongrowingoppositiontofacialrecognitionsystemsandwarningsbytheinventoroftheWorldWideWebabouttheinternet'sfuture.Googleannouncedithadcompletedsuccessfulexperimentsthatledtoamajordevelopmentinquantumcomputingtechnology.Inonetest,theteamsaiditsquantumcomputerprocessorwasabletocompleteacomplexmathematicalprobleminjust200seconds.Thescientistssaidthesameproblemwouldhavetakentheworld'sfastestsupercomputer10,000yearstofinish.Theresearchersdescribedthenewprogressas"quantumsupremacy."Thistermdescribesapointatwhichaquantumcomputercanperformacalculationthatatraditionalcomputercouldnevercompletewithinitslifetime.Israeliresearchersreportedtheyhadbuilttheworld'sfirst3D-printedheartusingapatient'sowncells.Thescientistssaidthesmall"printed"heartwasthefirst-ever3Dprintedheartcreatedtoincludebothtissueandbloodvessels.Theteamexpressedexcitementattheprogressmade,butsaidmuchmoreresearchisneededtocomeupwithafullyworking3D-printedhumanheartthatcaneffectivelypumpblood.SouthKorea'sHyundaiMotorGroupannouncedthelaunchofitsfirstvehiclewithasolartop,orroof,chargingsystem.ThenewsystembecameavailableforHyundai'snewSonataHybridmodel.Thevehiclehasastructureofsolarequipmentontopofthecartocaptureenergyfromthesuntohelpchargethebattery.

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