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      點擊科學(xué)

      2024-12-16 00:00:00
      中國科技教育 2024年11期

      2024-09-13

      最新研究表明, 發(fā)現(xiàn)正確的事實可以讓陰謀論者產(chǎn)生懷疑,而人工智能正是可以從旁協(xié)助的工具。在與人工智能模型GPT-4 Turbo 進行基于證據(jù)的對話后,陰謀論者大大降低了他們對所青睞的陰謀論的信任度,而這種新萌生的懷疑態(tài)度持續(xù)了數(shù)月。如此大規(guī)模揭開陰謀論信仰網(wǎng)絡(luò)的舉措在以前是無法實現(xiàn)的。

      New r e s e a r c h i n d i c a t e sthat finding the right facts caninstill skepticism in conspiracyb e l i e v e r s , a n d a r t i f i c i a lintelligence (AI) is just the toolto help. After an evidence-baseddialogue with GPT-4 Turbo, anAI model, conspiracy theoristssubstantially reduced their beliefin favored conspiracies, and thisnewfound skepticism remainedfor months. Unraveling webs ofconspiracy beliefs at scale hasnot previously been possible.

      2024-09-20

      封面圖展示的這張照片是一只雌性標準花鼠——一種用于寵物貿(mào)易的馴養(yǎng)變種??紤]到老鼠與人類之間長期的密切關(guān)系,老鼠成為很好的寵物也就不足為奇了。雖然棕色和黑色的“野生”老鼠確實會傳播一些傳染病,但近期我們了解到它們具有一些更積極的屬性,包括它們技巧熟練、適應(yīng)性強,甚至很喜歡玩耍。

      T h i s p h o t o g r a p h s h o w sa female standard fancy rat—adomesticated variant for the pettrade. That rats make good petsis not surprising when consideringthe long history of their closea s s o c i a t i o n s w i t h h u m a n s .Although brown and black "wild"rats do spread some infectiousdiseases, we have recently learnedabout more-positive attributes,i n c l u d i n g q u i t e h o w a d e p t ,adaptable, and even fun-lovingthey are.

      2024-09-27

      帕帕哈瑙莫夸基亞海洋垃圾項目(PMDP)的技術(shù)人員從西北夏威夷群島的珊瑚礁中回收了大量廢棄的漁具。一項新研究表明,經(jīng)過數(shù)十年從海洋和陸地棲息地清除危險塑料垃圾的不懈努力,瀕危的夏威夷僧海豹被塑料纏繞的概率已經(jīng)被成功降低了。

      P a p a h ā n a u m o k u ā k e aMarine Debris Project (PMDP)t e c h n i c i a n s r e c o v e r a m a s sof de re l i c t f i sh in g ge a r f r oma r e e f i n t h e N o r t h w e s t e r nHawaiian Islands. A new studydemonstrates that a decades-longeffort to remove dangerous plasticdebris from marine and terrestrialhabitats has succeeded in loweringendangered Hawaiian monk sealentanglement rates.

      2024-10-04

      兩個研究小組重點研究了肺炎克雷伯菌的防御相關(guān)逆轉(zhuǎn)錄酶系統(tǒng),發(fā)現(xiàn)了滾環(huán)逆轉(zhuǎn)錄的機制。當(dāng)噬菌體感染后,所產(chǎn)生的串聯(lián)互補DNA 會轉(zhuǎn)化為雙鏈DNA,導(dǎo)致轉(zhuǎn)錄出幾乎無限的開放閱讀框架(簡稱neo)mRNA, 該mRNA為一個Neo 多肽編碼。這些研究強調(diào)了可以通過以RNA 為模板的基因創(chuàng)建擴展基因組編碼的潛力。

      F o c u s i n g o n a d e f e n s e -associated reverse transcriptases y s t e m f r o m K l e b s i e l l apneumoniae , two groups haveuncovered a mechanism of rollingcircle reverse transcription. Theresulting concatenated cDNA isc o n v e r t e d t o d o u b l e - s t r a n d e dD N A u p o n p h a g e i n f e c t i o n ,l e a d i n g t o t r a n s c r i p t i o n o f anearly endless open reading frame(neo ) mRNA that codes for aNeo polypeptide. These studieshighlight an expansion of genomecoding potential through RNAtemplatedgene creation.

      (陶 陶 編譯)

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