Nagissa Mahmoudi

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 ...

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/...

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...

Ahhh yes, the geopolitical version of champagne: if it’s not officially declared, it’s just a sparkling military operation.

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

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.

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.

Alex, the answer is: what is creating new terrorist groups?

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.

Yikes.

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

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.”

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. https://bit.ly/4qWgPLz

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?

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)

A pilot in a submersible vehicle collecting sediments samples in 30 meters of water looking for Asgards (microbial relatives of eukaryotes)

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

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

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.

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/...

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

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...

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....

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.

Epstein files reveal deeper ties to scientists than previously known Latest batch of documents show researchers consulting the financier and sex offender on publications, visas and more.

Sorry for the preview pic in your feed, but we've posted a thoughtful story by @dangaristo.bsky.social that delves into the tangled web of relationships between Jeffrey Epstein and various scientists: www.nature.com/articles/d41...

Academics vying for a spot in Epstein‘s world. There are so many. I feel the need to make a thread, so I don’t keep confusing them. 1/

🤔What does it take to develop safe and effective marine carbon dioxide removal strategies? Find out from @nytimes.com, whose reporters joined our EPA-approved ocean alkalinity enhancement test in the Gulf of Maine last summer.

📲Read the gift article: go.whoi.edu/oae-nyt

📸 by Sebastian Zeck

Well, I am in the Epstein Files ...

www.justice.gov/epstein/file...

Who is the sender?! I don’t understand the redactions….I thought they are only suppose to protect the identity of victims.

I did not expect to see a scientist proposing research in the #Epstein files that sought funding to “link sexual behavior to microbial diversity”.

Share your comments on NCAR with NSF Tell NSF the future that you want for NCAR by 13 March

@agu.org has a tool to help you submit a comment to NSF on the importance of NCAR: agu.quorum.us/campaign/154...

#SaveNCAR

Image description: A spider on a green background. Text reading:'' EGU logo now hiring IT specialist Apply Today' and the email 'vacancy@egu.eu' detailed at the bottom.''

🚨 #JobAlert

#EGU is currently seeking a full-time, permanent #IT Specialist, based in the Executive Office in Munich, Germany.

📆 Start date: IMMEDIATE.
👉 Learn more and Apply NOW: egu.eu/5OQO8J

📸: Shailendra Pratap on imaggeo.egu.eu

We are saddened to learn of the passing of the Hon. Kirsty Duncan. A respected scientist and tireless champion of research in Canada, she leaves a lasting legacy through her leadership and advocacy, including her service as Minister of Science.

Our condolences to her friends and family.

ICE executed Alex Pretti. Anything else you’re told is a lie.

So proud and happy to see my friend and fellow Earth Scientist, Marena Lin, running for congress in California. Please donate if you can!

www.marenalinforcongress.com

@marenalinforcongress.com