To test the finest clock, scientists built it a twin
Two single-ion lutetium clocks agreed after 200 hours of comparison—but gravity, stability and systematic error explain why that is not the same as perfect time.
Continue reading →The archive
physics
Thirteen trapped ions made a model string break from its edges
Focused lasers turned ion spins into a measurable stand-in for confined charges, revealing pair formation that began at the boundaries and spread inward.
Continue reading →The antimatter was the lightest part of the shipment
Ninety-two antiprotons crossed CERN inside an 850-kilogram machine—and a tiny electrical signal showed that every one survived.
Continue reading →A carnivorous plant turns microbial wandering into one-way traffic
Genlisea’s underground traps appear to rectify the restless motion of microbes, moving prey and debris uphill without an obvious pump.
Continue reading →worldukrainepublic-transportclimatehurricanesstorm-surgegulf-coastfloridanaturepaleontologyevolutionconsumersfoodnutritionstarbuckssportstennisjannik-sinneratp-finalshealthmeaslesnew-yorkvaccinationsciencenobel-prizeneuroscienceoptogeneticsartificial-intelligencetechnologyus-policyconsumer-protectionlatviaelectionseuropegovernmentustexascourtsbordernational-parksbrazilebolademocratic-republic-of-congopublic-healthwnbabasketballplayoffsbangkokthailandfloodingwater-managementheatspaceinternational-space-stationorbital-mechanicseconomyenergydieseltradepoliticssupreme-courtimmigrationgamesresearchseabirdsconservationfishingel-salvadorus-economygdpaiftcglacierssnowwaterswitzerlandtariffseuropean-unionemergency-servicesoceansmarine-heatwavesweathernew-mexicooklahomabutterfliesanimal-behaviorvisionculturejapanvoice-actinglawcaliforniaamusement-parkspublic-safetyconsumer-affairsaustraliainflationhousehold-costscybersecurityai-governanceus-politicstax-policyfilm-industryjobseconomicsmoroccoparliamentworld-politicsisraelcanadabritish-columbialnginfrastructureindigenous-investmentplantsstrawberriesplant-scienceadelaidefootballpremier-leaguemanchester-citysports-governanceyemenhealthcarehumanitarian-crisisdisplacementhawaiiresiliencehurricane-noloemergency-sheltersdemocratic-republic-of-the-congooutbreaksfilmbox-officecinemadataenglandjude-bellinghamharry-kaneworld-cupitalyeducationschoolsimmigration-policypress-freedomwhite-housedue-processbaseballmlbnew-york-yankeesaaron-judgemlb-postseasontechnology-policycroatiagermanynord-streameuropean-arrest-warrantpovertyhousehold-financesocial-securitypublic-policyfirst-amendmentdesigncopyrightnetherlandsretailhousingmortgagesinterest-ratesel-ninoweather-forecastingagricultureearly-warningchildhood-cancerleukaemiaglobal-healthhealth-systemscancer-survivalcarbon-cycleriver-chemistrysoil-sciencehuman-evolutiongeneticsskeletoncartilagegene-regulationarchaeamicrobiologycell-biologymethanogenschemistrymaterials-scienceboronroboticsenergy-efficiencyengineeringquadruped-robotsearthfreshwatersatellitesgravityearth-sciencegeophysicsinner-coreprecision-measurementbatsgenomicsfossilsatomic-clocksmeasurementphysicslutetiumglassfishcollective-behaviorsea-spidersbiodiversitytaxonomysalish-seafolk-musicdanceliving-heritagediplomacyiranunited-statesqatarunited-nationsarchaeologyparisfranceiron-ageancient-historyquantum-simulationparticle-physicstrapped-ionsquantum-computingheatwavesatacamachileoecdlakesvirusesecologyforestsarcticancient-dnajurassicecholocationmarsperseveranceplanetary-geologybiologyastronomyexoplanetsnirpsinsectsmribrain-imagingpigsbatteriesbioelectronicsmedical-devicescryo-emcarbon-nanotubesstructural-biologymicroscopyelectric-vehiclesmot-datalifecycle-emissionstransportdata-sciencebirdsurban-ecologyplastic-pollutioncrisprbacteriophagesdna-repairgenome-editingagingraman-microscopysenescenceplanariansregenerationstem-cellsrainwaterwater-qualityprosthetics3d-printingsensorschinatyrannosaurus-rexgeochemistrysand-hoppersbeachesanimal-engineersxrismpulsarscomputer-visionbenchmarks360-videored-blood-cellsoxygenproteomicspsychologylearningtropical-cyclonesradaralphafoldprotein-structuredronesbiomimeticsai-evaluationgemininitrogenproteinsdeep-seacalciumprotistsbiophysicsviprdnarnathermal-insulationperovskitesai-researchautomationcoral-reefsokinawamarine-sciencebankingdna-computingmolecular-computingthermodynamicscomputer-sciencedjiboutiohiodata-centerslocal-governmentballot-measuressingaporemusicnanyincultural-heritagecoding-agentssoftware-toolsprogrammingx-ray-imagingpapyrusherculaneumchimpanzeesteachingtool-useanimalswild-catsantimattercernexperimentsactive-mattercarnivorous-plantsrustpoloniusborrow-checkerperformancehashmap