Saturday Citations: Cute squid with scary name; potential detection of dark matter; fate of the AMOC

 

The “scary‑named” squid is the Vampyroteuthis infernalis — regularly called the “vampire squid.” Its emotional title and appearance (dull body, cloak‑like webbing, color‑changing eyes) give a false representation of its genuine nature: a tender, deep-sea animal that bolsters on rubbish or maybe than chasing prey. 


Phys.org




Scientists have presently sequenced its genome and found that at the chromosomal level, it jam an “ancient squid” engineering — basically acting as a “living fossil.” That makes it a bridge between genealogical squid-like cephalopods and afterward octopus‑lineage creatures. 


Phys.org


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Its genome is gigantic — around four times the measure of the human genome — however in spite of that, its chromosomal organization is moderated and shockingly steady. This offers analysts a uncommon window into developmental history, and makes a difference enlighten how advanced octopuses advanced from squid‑like predecessors. 


Phys.org


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The upshot: the vampire squid isn’t a creature, but a profoundly imperative — and suddenly “primitive” (in the sense of genealogical) — animal making a difference us get it cephalopod evolution.




Why it things: Deep‑sea species like the vampire squid protect old hereditary data misplaced in numerous cutting edge heredities. By considering them we can remake developmental branching, get it how key characteristics (arms, limbs, behaviors) advanced — and indeed learn approximately versatility and adjustment in extraordinary environments.




 Conceivable to begin with discovery of dim matter — provisional, but tantalizing




Researchers utilizing information from the Fermi Gamma‑ray Space Telescope watched gamma‑ray outflow from the center of the Smooth Way that shows up in a “halo-like” structure. The vitality of the gamma photons — around 20 giga‑electronvolts — matches forecasts for demolition occasions of theoretical dull matter particles, especially Pitifully Association Gigantic Particles (WIMPs). 


Phys.org




According to the report, the spatial dispersion of the gamma-ray flag fits well with the shape anticipated from a dark‑matter radiance. That implies this might be the to begin with time we’re seeing backhanded — high‑energy — prove of dull matter association (i.e. obliterating) in a way that produces distinguishable radiation. 


Phys.org




The researchers are cautious. They emphasize that more perceptions and investigations are required to affirm the finding — elective astrophysical clarifications (pulsars, foundation sources, other intriguing forms) must be ruled out. 


Phys.org




Why it things (in case affirmed): For decades, dim matter has been one of the greatest secrets in astronomy: we induce its presence from gravitational impacts, but have never watched it specifically. A solid discovery — indeed circuitous — would have enormous suggestions: sparkling light on what makes up ~85% of the matter in the universe, and forming our understanding of world arrangement, infinite advancement, and essential molecule physics.




 The destiny of the Atlantic Meridional Toppling Circulation (AMOC) — questionable but critical


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The AMOC is a large-scale framework of sea streams (counting the Inlet Stream) that circulates warm, salty water from the tropics toward the North Atlantic, with colder, more profound water sinking and streaming back south. It’s a key controller of climate in the Northern Half of the globe — affecting temperatures, precipitation, climate designs, ocean level, and indeed marine environments. 


os.copernicus.org


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AOML


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For a long time, researchers have cautioned that softening of the Greenland Ice Sheet seem refresh the North Atlantic, diminish water thickness, repress deep‑water arrangement, and eventually destabilize or collapse the AMOC. That seem trigger sensational climate shifts: colder, harsher winters in Europe, disturbed precipitation in the tropics, expanded extraordinary climate, and sea‑level changes. 


ScienceDaily


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Down To Earth


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Yet unused investigate distributed November 2025 offers a turn: beneath certain conditions, meltwater from the West Antarctic Ice Sheet (or maybe than Greenland) might — incomprehensibly — offer assistance stabilize the AMOC. Freshwater from the south, blending with saltier southern‑hemisphere sea streams, might in the long run offer assistance keep up water thickness in the North Atlantic and keep circulation going. 


Universiteit Utrecht




Still, other modeling thinks about proceed to sound the caution: beneath high‑emission climate scenarios, the AMOC may debilitate definitely or indeed closed down afterward this century (a few reenactments point to a tipping point between ~2023 and 2076, with middle gauges around mid-century). 


Phys.org


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On the observational side: a later century‑long remaking ties a diligent cold fix south of Greenland to a long-term lull of the AMOC, contending that the debilitating is genuine and continuous. 


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 In any case — and this includes to the complexity — another 2025 ponder proposes that when recreated from air‑sea heat‑flux information or maybe than surface temperature, the AMOC appears no prove of decay over the final ~60 a long time, implying that a few prior measures may be deluding. 


ScienceDaily


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In brief — the future of the AMOC remains profoundly questionable. Whether it will collapse, stabilize, or enter a debilitated but still working mode depends intensely on how much and how quick greenhouse‑gas emanations proceed, how ice sheets soften (Greenland vs. Antarctic), and how sea elements move universally.

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