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Nagissa Mahmoudi

@nagissa.bsky.social
6.9K followers 1K following 319 posts

Associate Professor at McGill University 🇨🇦 Interested in what microbes eat in the ocean and why. #microbes #carbon #biogeochemistry. www.geomicromcgill.com

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Reposted by Nagissa Mahmoudi
Joy 💙 @sugataai.com · 11/10/2026
☄️🌔
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Nagissa Mahmoudi @nagissa.bsky.social · 11/10/2026
I thought it was just me imagining this. crop tops! tiny shorts and skirts! it's disturbing.
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Anthony Ricciardi @ecoinvasions.bsky.social · 26/09/2026
OTD in 1962, Silent Spring was published. “Nature has introduced great variety into the landscape, but man has displayed a passion for simplifying it. Thus he undoes the built-in checks and balances by which nature holds the species within bounds.” ― Rachel Carson, Silent Spring
Rachel CarsonThe front cover of Silent Spring.
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Harvard_MCB @harvardmcb.bsky.social · 25/09/2026
Tenure-Track Professor in Life Science and AI 🔬 🧠 🧪🧬 #AcademicSky #higherEd #MLSky www.mcb.harvard.edu/department/n... @neurovenki.bsky.social @naoshigeuchida.bsky.social@harvard.edu @mitpress.bsky.social @kempnerinstitute.bsky.social @harvardbrainsci.bsky.social
mcb.harvard.edu
Tenure-Track Professor in Life Science and AI - Harvard University - Department of Molecular & Cellular Biology
The Life Sciences Departments in Harvard Faculty of Arts and Sciences seek to recruit a tenure-track professor whose research is at the interface of AI and life sciences, […]
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Reposted by Nagissa Mahmoudi
Max Kozlov @maxkozlov.bsky.social · 25/09/2026
SCOOP: Top researchers at Columbia, Stanford, and others thought they were elected to elite scientific societies alongside Nobel laureates. The catch? The organizations are a sham. I spent the last month diving deep into a massive academic scam spanning continents, for @nature.com
nature.com
Exclusive: Sham scientific societies are misleading star researchers
A Nature investigation reveals a network of organizations that have been building their ranks through deceptive practices.
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Nagissa Mahmoudi @nagissa.bsky.social · 18/09/2026
We are hiring TWO new faculty members in Earth & Planetary Sciences at McGill! 🌎 We’re looking for new colleagues in: ⛏️ Critical Minerals for Sustainability 🌋 Solid Earth Processes If either is a good fit for you, please apply! Deadline is October 1. www.mcgill.ca/eps/about-us...
mcgill.ca
Employment Opportunities
Current Openings Join our extraordinary and diverse department! Tenure-track appointment in Critical Minerals for Sustainability Department of Earth and Planetary Sciences, McGill University (www.m...
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Kumaran Ramamurthi @ramamurthilab.bsky.social · 18/09/2026
Folks have known for years that adding magnesium to media rescues the lethality of deleting many 'essential' genes, but why? @eswaralab.bsky.social and @subtisilly.bsky.social say that free iron builds up in these mutants. Mg2+ mitigates this by redirecting metabolism towards limiting ROS production
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Nagissa Mahmoudi @nagissa.bsky.social · 18/09/2026
We are hiring TWO new faculty members in Earth & Planetary Sciences at McGill! 🌎 We’re looking for new colleagues in: ⛏️ Critical Minerals for Sustainability 🌋 Solid Earth Processes If either is a good fit for you, please apply! Deadline is October 1. www.mcgill.ca/eps/about-us...
mcgill.ca
Employment Opportunities
Current Openings Join our extraordinary and diverse department! Tenure-track appointment in Critical Minerals for Sustainability Department of Earth and Planetary Sciences, McGill University (www.m...
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Reposted by Nagissa Mahmoudi
Mark Carney @mark-carney.bsky.social · 17/09/2026
Canada is building a deeper alliance with the EU so that we may write our own futures — with our values, and our ambitions.
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Faith Kearns, Ph.D. @fkearns.bsky.social · 04/09/2026
This is brutal to read captimes.com/news/educati...
captimes.com
UW-Madison students, records detail investigation of professor
Dietram Scheufele resigned after investigators determined he had sexual relationships with two students and engaged in unwelcome sexual conduct with one.
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Nagissa Mahmoudi @nagissa.bsky.social · 18/09/2026
Jealous!
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Nagissa Mahmoudi @nagissa.bsky.social · 28/08/2026
FOMO!
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Nagissa Mahmoudi @nagissa.bsky.social · 01/05/2026
Yay! Congrats 🎉
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Nagissa Mahmoudi @nagissa.bsky.social · 29/04/2026
You mean an 8 hour meeting? 😂
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Justin Chandler @justinchandler.work · 22/04/2026
CBC News is hiring to staff the upcoming Peel bureau, which will cover Brampton, Mississauga and Caledon. See here: www.cbc.ca/news/canada/...
cbc.ca
Apply now for a job in journalism | CBC News
As part of our commitment to local news, CBC News hiring several journalists to help launch our new station in Peel region to serve the rapidly growing communities of Brampton, Mississauga and Caledon...
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Reposted by Nagissa Mahmoudi
Allen Collins @agcollins.bsky.social · 22/04/2026
Remember that Golden Orb? #MarineLife is cool, and Exploration is key to learning the stories of species, every one of which is fascinating. with @echinoblog.bsky.social @megdaly.bsky.social @abcollens.bsky.social and others. www.noaa.gov/news/scienti...
noaa.gov
Scientists reveal identity of mysterious ‘golden orb’ collected during NOAA expedition
A two-and-a-half-year-old mystery of the "golden orb," an unidentified object that captured significant public interest when it was collected during a 2023 NOAA expedition, has finally been solved. Sc...
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Yashar Ali 🐘 @yasharali.bsky.social · 20/04/2026
Absolutely incredible. NASA Astronaut Reid Wiseman, who commanded Artemis II, took this footage from the far side of the Moon with his iPhone. Watch with sound on.
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Michael E. Mann @michaelemann.bsky.social · 14/04/2026
This may be the stupidest climate denial talking point of all time
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Jesse Shapiro @bjesseshapiro.bsky.social · 14/04/2026
Join us in Montreal for the Canada/US Northeast hub! I will give a talk and @gmdouglas.bsky.social @nagissa.bsky.social & Tim Blower will surely give *great talks* Opportunities for student talks and posters and a good time guaranteed!
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Reposted by Nagissa Mahmoudi
Reinier Egas @raegas.bsky.social · 14/04/2026
Grab a coffee and enjoy reading up on CO metabolism in methanotrophs! Freshwater ANME (own work): www.nature.com/articles/s41... Marine ANME (@Orphan lab): www.nature.com/articles/s41... Big thanks to our collaborators at QUT! @sjmcilroy.bsky.social (Heyu/Andy/Gene!) @cuwelte.bsky.social
nature.com
Carbon monoxide metabolism in freshwater anaerobic methanotrophic archaea - Nature Communications
Anaerobic methane-oxidizing archaea mitigate methane emissions in anoxic environments. Here, Egas et al. show that these microbes can also oxidize carbon monoxide, prompting re-evaluation of their cla...
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Forbes @forbes.com · 13/04/2026
Now 14 months in, Canada’s rejection of the U.S. is the most successful tourism boycott in memory.
forbes.com
Canadians Visiting U.S. By Car Down 35% In 2 Years
Now 14 months in, Canada’s rejection of the U.S. is the most successful tourism boycott in memory.
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NASA Artemis @artemis.extwitter.link · 11/04/2026
"Planet Earth: You. Are. A. Crew." Artemis II mission specialist Christina Koch reflects on what it means to be a "crew."
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canaztekin.bsky.social @canaztekin.bsky.social · 10/04/2026
🚨 Why can’t mammals regenerate limbs like frog tadpoles or salamanders? In our new paper in @science.org , we show that species-specific oxygen sensing acts as a gatekeeper for initiating limb regeneration 🐭🐸 🔗 www.science.org/doi/10.1126/... #EvoDevo
science.org
Species-specific oxygen sensing governs the initiation of vertebrate limb regeneration
Why mammals cannot regenerate limbs like amphibians do presents a long-standing puzzle in biology. To uncover the underlying differences, we compared amputation responses of embryonic mouse (Mus musculus) and Xenopus laevis tadpole limbs. Lowering ...
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Katie Mack @astrokatie.com · 07/04/2026
#Artemis II lunar flyby images are showing up! 😍 A crescent Earth setting behind the Moon.
Earthset captured through the Orion spacecraft window at 6:41 p.m. EDT, April 6, 2026, during the Artemis II crew’s flyby of the Moon. A muted blue Earth with bright white clouds sets behind the cratered lunar surface. The dark portion of Earth is experiencing nighttime. On Earth’s day side, swirling clouds are visible over the Australia and Oceania region.  In the foreground, Ohm crater has terraced edges and a flat floor interrupted by central peaks. Central peaks form in complex craters when the lunar surface, liquefied on impact, splashes upwards during the crater’s formation.
[alt text from NASA]
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Nagissa Mahmoudi @nagissa.bsky.social · 02/04/2026
I can send some…whereabouts are you?
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STCmicrobeblog @stcmicrobeblog.bsky.social · 23/03/2026
Cultivating the Ancestors… in Motion What electron microscope images hint at, but can only be seen in videos: how 'Asgard' archaea move.
smallthingsconsidered.blog
Cultivating the Ancestors… in Motion
What electron microscope images hint at, but can only be seen in videos: how 'Asgard' archaea move.
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Ben J Woodcroft @benjwoodcroft.bsky.social · 23/03/2026
New paper in mSystems! 🧵 - how much of your metagenome is actually bacterial/archaeal DNA? For many samples, nobody knows. We built SingleM prokaryotic_fraction (SPF) to answer this, then ran it on >100,000 public metagenomes. 🧬🖥️🦠 Here's what we found 👇 doi.org/10.1128/msystems.01062-25
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Dr. Dawn Bowdish @msmacrophage.bsky.social · 22/03/2026
I ❤️ this @theglobeandmail.com piece on @gdwantibiotics.bsky.social. Such a beautiful story about his drive to discover new antibiotics against all odds, a tribute to his global leadership, not to mention the many trainee careers he has launched. So honoured to have been hired by this great man. #AMR
theglobeandmail.com
Canadian researcher Gerry Wright is searching for the next generation of life-saving antibiotics
More than 5 million deaths every year are caused by or linked to superbugs
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Nagissa Mahmoudi @nagissa.bsky.social · 22/03/2026
Anyone who says that has not been to Yellowstone NP.
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James Rae @mudwaterclimate.bsky.social · 14/03/2026
Chair in Earth Sciences position @uniofstandrews.bsky.social closing soon - Monday 23 March. Very broad remit, so if you’d like to join our lovely school, and get to live in the super beautiful and friendly wee nation of Scotland, please apply! www.st-andrews.ac.uk/earth-scienc... ⚒️🌊🧪
East Sands beach, St Andrews, in the sunshine (which happens more often than you probably think!)
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Gregg Levine @greggjlevine.bsky.social · 09/03/2026
The Iranian girls’ school was hit by a US tomahawk cruise missile. NPR has confirmed the footage.
npr.org
Video appears to show U.S. cruise missile striking Iranian school compound
The seven-second video was released by Iranian state media and directly contradicts statements made by President Trump, who said Iran was responsible for the strike.
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Jennifer Biddle @jenbiddle.bsky.social · 05/03/2026
New paper out! We sat down and compiled all viral work in marine sediments. The water column has been getting a second look for viral interactions, its time for sediment to have the same! journals.asm.org/doi/10.1128/...
journals.asm.org
Viruses in marine sediments: a review of their effect on biogeochemistry and microbial interactions | Applied and Environmental Microbiology
In the ocean, viruses are known to mediate the carbon cycle, keeping dissolved organic carbon (DOC) in the microbial loop and preventing its movement into secondary consumers (1). However, few direct ...
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Prof Alessandro Tagliabue @altagliabue.bsky.social · 04/03/2026
Check out our new paper on how temperature modulates the iron requirement of nitrifying bacteria - these guys are critical in the ocean nitrogen cycle as they recycle oxidised forms of N. But to do this they need a lot of iron. 🌊 www.pnas.org/doi/abs/10.1...
pnas.org
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
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Nagissa Mahmoudi @nagissa.bsky.social · 04/03/2026
Ahhh yes, the geopolitical version of champagne: if it’s not officially declared, it’s just a sparkling military operation.
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Pawel Burkhardt @pawelburkhardt.bsky.social · 04/03/2026
Thrilled to share that our preprint has been accepted in Science Advances! Grateful to an incredible team & collaborators. Link: www.science.org/doi/10.1126/... 👏 @annaferraioli.bsky.social @maikekittelmann.bsky.social @msarscentre.bsky.social @erc.europa.eu @hfspo.bsky.social #ctenophores
science.org
The 3D architecture of the ctenophore aboral organ and the evolution of complex integrative centers in animals
The ctenophore aboral organ integrates multimodal sensory signals across distinct cell types.
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Nagissa Mahmoudi @nagissa.bsky.social · 04/03/2026
That's correct...not a mass extinction. The paper you shared describes a potential decrease in primary productivity, meaning reduced growth of photosynthetic microbes in the surface ocean.
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Shepherd @neolithicsheep.bsky.social · 04/03/2026
If you ever want to read a paper for free and can't find it otherwise, email the lead author and politely ask for a copy. You will not be bothering the person. You will in fact make their whole entire day. I have had scientists get so excited I asked they sent me everything they ever published.
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Nagissa Mahmoudi @nagissa.bsky.social · 04/03/2026
Alex, the answer is: what is creating new terrorist groups?
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Nagissa Mahmoudi @nagissa.bsky.social · 04/03/2026
Much of the anaerobic microbial life was not wiped out by the GOE…particularly on the time scale of the oxygenation which occurred over hundreds of millions of years. Those anaerobic microbes just moved to deeper parts of the ocean which remained anoxic for while after the GOE.
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Nagissa Mahmoudi @nagissa.bsky.social · 04/03/2026
Yikes.
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AGU (American Geophysical Union) @agu.org · 27/02/2026
In collaboration with @aslo.org , @tosoceanography.bsky.social, we thank you for a successful #OSM26! See you at #OSM28 27 February–3 March, Vancouver, Canada 🇨🇦! 📷 Cred: Bianca Otero
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19thnews @19thnews.org · 23/02/2026
The trove of files released by the Department of Justice, illuminates Epstein’s deep interest and entrenchment in the scientific community. But the files also underscore how he used his power and money in ways that kept women out of places where they might succeed. bit.ly/4qWgPLz
bit.ly
The boys’ club: How Epstein’s influence shaped the exclusion of women in STEM
In one email, an AI researcher suggested it’s “hard to be brilliant if you are worrying if you look fat or why another woman hates you.”
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Alondra Nelson @alondra.bsky.social · 23/02/2026
The Epstein files document what many women researchers have long experienced but rarely seen laid bare so starkly: exclusion operating behind closed doors, shaping who gets funded, invited, mentored, and taken seriously. How many of these networks, norms, and gatekeepers remain in place?
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Carl Zimmer @carlzimmer.com · 18/02/2026
Scientists have seen Asgard archaea crawling for the first time. When it comes to the origin of eukaryotes, this is like seeing a feathered dinosaur in the wild. (Video courtesy of Philipp Ralder)
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Carl Zimmer @carlzimmer.com · 18/02/2026
One of the biggest questions in biology is how complex cells evolved about 2 billion years ago. Here's my new story on how scientists are solving the mystery of eukaryotes like us. Gift link: nyti.ms/4qMbo22
A pilot in a submersible vehicle collecting sediments samples in 30 meters of water looking for Asgards (microbial relatives of eukaryotes)
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Emil Ruff @emilruff.bsky.social · 03/02/2026
Come work with us on #darkoxygen as part of the NASA Postdoctoral Fellowship Program. It is an amazing opportunity to get up to 3 years of funding. Deadlines are March 1. and November 1. Happy to discuss your ideas! Details here: zintellect.com/Opportunity/... @mblscience.bsky.social #astrobiology
zintellect.com
Zintellect - National Aeronautics and Space Administration (NASA) - ICAR - OxyMoRon: Understanding dioxygen production and consumption in apparently anoxic environments - 0042-NPP-MAR26-ABProg-Astrobi...
About the NASA Postdoctoral Program The NASA Postdoctoral Program (NPP) offers unique research opportunities to highly-talented scientists to engage in ong
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Ross Fitzgerald @jrossfitz.bsky.social · 18/02/2026
Insights into how #Staph aureus adapts to the bovine host by unlocking nutrients from the dairy niche. Great work by Amy Pickering, Jamie Gorzynski and others in the group. Bacterial metabolic remodeling by convergent evolution after a host switch.|Science Advances www.science.org/doi/10.1126/...
science.org
Bacterial metabolic remodeling by convergent evolution unlocks nutrient availability after a host switch
Staphylococcus aureus has undergone metabolic remodeling to adapt to the dairy niche.
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Royal Society Publishing @royalsocietypublishing.org · 16/02/2026
We are thrilled to announce that, thanks to the support of our institutional subscribers, all Royal Society subscription journals will be open access in 2026 through #S2O. Researchers can read all articles and publish #OpenAccess in our eight subscription journals for free buff.ly/4Lu9VpW
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Greg Dick @greatlakesgreg.bsky.social · 16/02/2026
you don't have to be in the water to be exposed to toxins in cyanobacterial blooms: new work from Greg Boyer's group at the Great Lakes Center for Freshwaters and Human Health www.tandfonline.com/doi/full/10....
tandfonline.com
Potential cyanotoxin exposure while recreating during cyanobacterial harmful algal blooms, and possible exposure mitigation
Beale CF, Wei B, Boyer GL, Wigdahl-Perry CR, Yokota K. 2026. Potential cyanotoxin exposure while recreating during cyanobacterial harmful algal blooms, and possible exposure mitigation. Lake Reserv...
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Mauri Pelto @mauri-pelto.bsky.social · 11/02/2026
We celebrate International Day of Women and Girls in Science as the North Cascade Climate Project expeditions have been mainly powered by women in the last decade. We are artists and scientists, mostly doing both aspects during the field season. Toughness , collaboration and joy is the net result.
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