Baayoloojii
Jalqaba salphaa akkasii irraa bifaawwan dhuma hin qabne, baay'ee bareedoo fi ajaa'ibsiisoo ta'an, guddachuun dhufaniiru; ammas guddachaa jiru.
— (1859)
Model tokko almost every progressive aging process balleesse. Somatic mutations ammallee thought experiment sana xumuran
Model kun humans 194 years jiraachuu danda'u hin jedhu. Background mortality age 30 irratti freeze godha, nearly every other progressive aging mechanism exclude godha, fi mutation-driven cell loss modeled tissues afur keessatti yoom failure uuma gaafata. Lakkoofsota gurguddoon isaa conditional outputs dha; reachable ages ykn treatment forecasts miti.
Awwaalli whale galaana gadi fagoo dhugumatti galmee waggaa miliyoona shanii dha
Barruun Nature tokko Godina Diamantina kibba-baha Galaana Hindii keessatti tuuta reeffaa fi hambaa whale guddaa gabaasa: hawaasa ammayyaa reeffa whale shanii, hambaa cetacean dhibbaan lakkaa'amu, fi umrii isotope strontium waggaa miliyoona 5.3 tilmaamaan duubatti deemu. Wanti nama dinqu whale'n du'uuf iddoo filachuu isaanii yookaan balaa tokko awwaala uumuu isaa miti. Ragaan du'a whale idilee, reeffa gadi lixu, soorata barbaaduu rakkisaa kan whale funyaan dheeraa, bifa lafa galaanaa fi eegumsa haala hin baramneen gaarii ta'een galmee gadi fagoo fi yeroo dheeraa ijaarame agarsiisa. Sirna naannoo reeffa whale galaana gadi fagoo ilaaluuf foddaa addaa bana; galaanni gadi fagoon amma kaartaa irratti galmaa'ee hubatame jechuu miti.
Fossil record New Mexico seenaa dinosaurs dhumaa caalaatti walxaxaa godha
Qorannoon Science Naashoibito Member New Mexico date haaraa gochuun asteroid impact dura waggoota dhibba-kumaatama muraasa xumuraa keessatti kaa'a. Kun barbaachisaa dha, sababni isaas end-Cretaceous dinosaur evidence gaariin baay'een north irraa dhufa. Southern record haaraan western North America xumura bira regional dinosaur faunas adda adda qabaachuu, community uniform tokko qofa gadi bu'aa hin turre, deeggara. Dinosaurs world guutuu irratti impact hanga dhufu flourishing turan hin mirkaneessu; regional fossil record global story baay'ee smooth gochuu akka danda'u agarsiisa.
Zebra finches calls akka categories meaning qabanitti ilaalu — garuu kun language waliin tokko miti
Science study tokko zebra finches calls adda adda dhaga'u qofa moo vocal repertoire ofii behavioral meaning qabu categories keessatti organize godhu jedhu test godhe. Laboratory discrimination tasks keessatti birds 11 call-types hunda baratan, categories new vocalizers irratti generalize godhan, calls contexts wal-fakkaataa keessatti fayyadaman acoustic similarity qofa irraa predicted caalaa systematic errors godhan. Kun categorical perception fi operational kind of meaning'f evidence cimaa dha. Finches human-like language, syntax, open-ended words yookaan humans waliin conversation channel qabu jechuun evidence miti.
Synthetic cell feed godhu, guddata fi qoodamu — serious step dha, garuu life scratch irraa ijaarame miti
Gareen University of Minnesota fatty droplet genome ~90,000-base qabu, feed godhu, DNA copy godhu, grow fi divide godhu generations shan keessatti report godha; beneficial mutation researchers introduce godhan selection'n babal'ata. Kun defined, purified parts irraa cells ijaaruu keessatti advance dhugaa dha. Garuu peer-reviewed hin taane; protein machinery ofii hin tolchu yookaan metabolism ofii hin run; parts purified biological molecules dha, simple chemicals scratch irraa miti; authors jecha isaanii keessatti selection spontaneous Darwinian evolution miti. Clean version 'first living cell non-living matter irraa built' miti.
Giant Cretaceous octopuses top predators ta'uu malan — garuu evidence'n jaws irraa jalqaba, sea monsters irraa miti
Science paper tokko huge Cretaceous cephalopod jaws irra deebi'ee qoratee species Nanaimoteuthis lama early finned octopuses ta'uu isaanii argue godha; body-size estimates meters hedduu, possible hanga 18.6 m. Heavy jaw wear hard-prey crushing agarsiisa; asymmetric wear lateralized behavior irratti hint ta'uu mala. Fossil story spectacular dha, garuu clean version 'kraken dhugaa ture' miti: jaws, wear patterns, taxonomy fi scaling irraa reconstruction dha.
Family haaraa sirnoota RNA'n qajeelfamanii DNA target godhan — CRISPR irraa adda, gene-editing tool qophaa'e immoo ammallee miti
Microbial genomes keessaa structure protein barbaaduun, qorattoonni TIGR-Tas, family sirnoota RNA-guided kanaan dura hin beekamne kan DNA muru, argatan. CRISPR irraa adda ta'een guide kutaa lamaa fayyadama, bakka 'PAM' hin barbaadu. Version tokko human cell edit gochuuf program gochuun danda'ame, garuu efficiency gadi-aanaa ture; structure isaa immoo sirnoota RNA-guided biroo waliin evolutionary link gadi fagoo qabaachuu malu agarsiise. Kun biology RNA-guided beeknu dhugumaan bal'isa fi tools fuulduraaf starting point ta'uu mala — basic-science discovery fi proof of concept dha, gene editor bilchaataa yookaan therapy miti.
Hantuutonni engineered Lyme resistance dhaalanii ticks infect gochuu dhaaban — lab proof of concept, wild release miti
Researchers gene antibody anti-Lyme house mice keessa galchan; hantuutonni dhalootaaf dhaalan; ticks infected ta'an yeroo isaan ciniinan, copy tokko qofaan illee infection morman, bacterium gara ticks haaraatti dabarsuus irra caalaa dhaaban. Reservoir species “heritable immunization”f proof of principle dha — lab house mice keessatti, wild white-footed mouse dhugumaan Lyme tamsaasu keessatti miti; field release hin qabu, ecology, regulation fi ethics banaa dha. Gene drive miti; “Lyme furame” miti.