Karim Benzerara
@karim-benzerara.bsky.social
Earth scientist/mineralogist/geochemist. Studying interactions between the geosphere and the biosphere. How bacteria form rocks? Looking for traces of (old, extraterrestrial..) life in rocks. How bacteria impact the behavior of chemicals in the environment
Reposted by Karim Benzerara
Phylogenetic and genomic insights into magnetosome biomineralization in magnetotactic Alphaproteobacteria https://pubmed.ncbi.nlm.nih.gov/41313000/
November 30, 2025 at 9:57 AM
Phylogenetic and genomic insights into magnetosome biomineralization in magnetotactic Alphaproteobacteria https://pubmed.ncbi.nlm.nih.gov/41313000/
Reposted by Karim Benzerara
🤩 Wow, two new recommendations in January:
Read more about vaginal microbiome dynamics and CaCO3 biomineralization by Mycrocystis here:
microbiol.peercommunityin.org/PCIMicrobiol...
microbiol.peercommunityin.org/PCIMicrobiol...
Thanks to all authors, @rafaelmunoztamayo.bsky.social and Rutger De Wit!
Read more about vaginal microbiome dynamics and CaCO3 biomineralization by Mycrocystis here:
microbiol.peercommunityin.org/PCIMicrobiol...
microbiol.peercommunityin.org/PCIMicrobiol...
Thanks to all authors, @rafaelmunoztamayo.bsky.social and Rutger De Wit!
Elucidating microbial community transitions within the human vag...
microbiol.peercommunityin.org
January 22, 2025 at 9:00 AM
🤩 Wow, two new recommendations in January:
Read more about vaginal microbiome dynamics and CaCO3 biomineralization by Mycrocystis here:
microbiol.peercommunityin.org/PCIMicrobiol...
microbiol.peercommunityin.org/PCIMicrobiol...
Thanks to all authors, @rafaelmunoztamayo.bsky.social and Rutger De Wit!
Read more about vaginal microbiome dynamics and CaCO3 biomineralization by Mycrocystis here:
microbiol.peercommunityin.org/PCIMicrobiol...
microbiol.peercommunityin.org/PCIMicrobiol...
Thanks to all authors, @rafaelmunoztamayo.bsky.social and Rutger De Wit!
Reposted by Karim Benzerara
How do #cyanobacteria keep amorphous calcium carbonate (ACC) stable inside their cells?
Our new #JACS paper shows — via solid-state NMR — that a protein shell and water molecules stabilize ACC.
👉 pubs.acs.org/doi/full/10....
#biomineralization @biomin-impmc.bsky.social @ulbruxelles.bsky.social
Our new #JACS paper shows — via solid-state NMR — that a protein shell and water molecules stabilize ACC.
👉 pubs.acs.org/doi/full/10....
#biomineralization @biomin-impmc.bsky.social @ulbruxelles.bsky.social
Proteins and Water Control the Stability of the Intracellular Amorphous Calcium Carbonate Inclusions Formed by Cyanobacteria
The formation of stable intracellular amorphous calcium carbonate (ACC) inclusions is widespread among bacteria, yet the mechanisms underlying their long-term stabilization remain unresolved. In this ...
pubs.acs.org
November 21, 2025 at 11:27 AM
How do #cyanobacteria keep amorphous calcium carbonate (ACC) stable inside their cells?
Our new #JACS paper shows — via solid-state NMR — that a protein shell and water molecules stabilize ACC.
👉 pubs.acs.org/doi/full/10....
#biomineralization @biomin-impmc.bsky.social @ulbruxelles.bsky.social
Our new #JACS paper shows — via solid-state NMR — that a protein shell and water molecules stabilize ACC.
👉 pubs.acs.org/doi/full/10....
#biomineralization @biomin-impmc.bsky.social @ulbruxelles.bsky.social
Reposted by Karim Benzerara
Two open PhD positions in molluscan biomineralization with the amazing Dr. Victoria Sleight at U. Aberdeen! See:
sleightlab.com/vacancies/ and sleightlab.com/phd-vacancy-2/. The first deadline is 15 December.
sleightlab.com/vacancies/ and sleightlab.com/phd-vacancy-2/. The first deadline is 15 December.
November 26, 2025 at 8:18 PM
Two open PhD positions in molluscan biomineralization with the amazing Dr. Victoria Sleight at U. Aberdeen! See:
sleightlab.com/vacancies/ and sleightlab.com/phd-vacancy-2/. The first deadline is 15 December.
sleightlab.com/vacancies/ and sleightlab.com/phd-vacancy-2/. The first deadline is 15 December.
Reposted by Karim Benzerara
Intracellular amorphous calcium carbonate biomineralization in methanotrophic gammaproteobacteria was acquired by horizontal gene transfer from cyanobacteria https://www.biorxiv.org/content/10.64898/2025.12.07.689555v1
December 8, 2025 at 2:16 AM
Intracellular amorphous calcium carbonate biomineralization in methanotrophic gammaproteobacteria was acquired by horizontal gene transfer from cyanobacteria https://www.biorxiv.org/content/10.64898/2025.12.07.689555v1
Reposted by Karim Benzerara
Le RN est une tartufferie et a montré, une nouvelle fois, son vrai visage. En commission j’avais déposé un amendement afin de financer et d’accélérer l’accessibilité des quais de gares pour les personnes handicapées et ... ils s’y sont opposés !!Lamentable
November 2, 2025 at 9:52 AM
Le RN est une tartufferie et a montré, une nouvelle fois, son vrai visage. En commission j’avais déposé un amendement afin de financer et d’accélérer l’accessibilité des quais de gares pour les personnes handicapées et ... ils s’y sont opposés !!Lamentable
Reposted by Karim Benzerara
L'Exobiologie : un voyage aux origines et aux frontières du vivant. Dans l'émission CQFD de la Radio Télévision Suisse, ce matin avec mon collègue astrophysicien @franckselsis.bsky.social
www.rts.ch/audio-pod...
@upecofficiel.bsky.social @lisa-ipsl.bsky.social @ipsl.bsky.social
www.rts.ch/audio-pod...
@upecofficiel.bsky.social @lisa-ipsl.bsky.social @ipsl.bsky.social
Le Grand Livre de lʹexobiologie, un voyage aux origines et aux frontières du vivant | RTS
L’exobiologie, science en plein essor, explore les origines, l’évolution et la possible distribution de la vie dans l’univers. Le Grand Livre de l’exobiologie (édition Belin), sous la direction de Muriel Gargaud et Hervé Cottin, propose une synthèse rigoureuse et illustrée de cette discipline transversale, où se rencontrent chimistes, planétologues, biologistes et philosophes.
L’ouvrage aborde les grandes questions de la chimie prébiotique, de la chiralité, des biosignatures, de la panspermie et des environnements propices à l’émergence du vivant, sur Terre comme ailleurs.
Une interview de l’astrochimiste Hervé Cottin et de l’astrophysicien Franck Selsis vient éclairer ces enjeux fascinants.
www.rts.ch
October 21, 2025 at 1:48 PM
L'Exobiologie : un voyage aux origines et aux frontières du vivant. Dans l'émission CQFD de la Radio Télévision Suisse, ce matin avec mon collègue astrophysicien @franckselsis.bsky.social
www.rts.ch/audio-pod...
@upecofficiel.bsky.social @lisa-ipsl.bsky.social @ipsl.bsky.social
www.rts.ch/audio-pod...
@upecofficiel.bsky.social @lisa-ipsl.bsky.social @ipsl.bsky.social
Reposted by Karim Benzerara
See what we have started with @weareagc.bsky.social doi.org/10.33063/agc...
Equitable Access, Open Science, and the Future of Publishing in Geochemistry and Cosmochemistry | Advances in Geochemistry and Cosmochemistry
Crawford, W. (2024). Diamond OA: The World of No-Fee Open Access Journals (p. 265). Livermore, CA: Cites & Insights Books.
doi.org
October 20, 2025 at 7:35 AM
See what we have started with @weareagc.bsky.social doi.org/10.33063/agc...
Reposted by Karim Benzerara
For a fews days (and nights) @biomin-impmc.bsky.social team is at Synchrotron Soleil on the Nanoscopium beamline. We are analysing different natural samples : cyanocatena, stromatolites, ancien fossils...
October 18, 2025 at 6:55 PM
For a fews days (and nights) @biomin-impmc.bsky.social team is at Synchrotron Soleil on the Nanoscopium beamline. We are analysing different natural samples : cyanocatena, stromatolites, ancien fossils...
Reposted by Karim Benzerara
After a great talk from @marcamillet.bsky.social at the Goldschmidt Conference, you are now able to contribute your ideas for our future designs.
These visuals will be featured on AGC merchandises to be sold with the sole aim of supporting journal activities.
submission here: urls.fr/fnU5WE
These visuals will be featured on AGC merchandises to be sold with the sole aim of supporting journal activities.
submission here: urls.fr/fnU5WE
July 23, 2025 at 11:01 AM
After a great talk from @marcamillet.bsky.social at the Goldschmidt Conference, you are now able to contribute your ideas for our future designs.
These visuals will be featured on AGC merchandises to be sold with the sole aim of supporting journal activities.
submission here: urls.fr/fnU5WE
These visuals will be featured on AGC merchandises to be sold with the sole aim of supporting journal activities.
submission here: urls.fr/fnU5WE
Reposted by Karim Benzerara
New in #GPLetters by Debrie et al: 🔬Why do modern stromatolites glow? Study reveals that their pervasive luminescence comes from preserved & degraded photosynthetic pigments, offering a window into past microbial life: buff.ly/e0HHGPB
#geobiology #stromatolites
@karim-benzerara.bsky.social
#geobiology #stromatolites
@karim-benzerara.bsky.social
June 9, 2025 at 2:20 PM
New in #GPLetters by Debrie et al: 🔬Why do modern stromatolites glow? Study reveals that their pervasive luminescence comes from preserved & degraded photosynthetic pigments, offering a window into past microbial life: buff.ly/e0HHGPB
#geobiology #stromatolites
@karim-benzerara.bsky.social
#geobiology #stromatolites
@karim-benzerara.bsky.social
Reposted by Karim Benzerara
DEADLINE EXTENDED for MFED25 registration to 14 May.
15 more in-person slots are available....To register please send your name, invoice address, status (regular or student), type of attendance (in-person/ online), & abstract (if applicable) ASAP to: [email protected].
15 more in-person slots are available....To register please send your name, invoice address, status (regular or student), type of attendance (in-person/ online), & abstract (if applicable) ASAP to: [email protected].
Registration deadline approaching for M-FED25, on 30 Sep - 3 Oct in Hanover (DE). Check out the website for further info: buff.ly/2i31ZAf & e-mail the organisers with your details by 15 April: [email protected]. Limited travel grants available for #ECRs via co-sponsorship from EAG & IAS
April 28, 2025 at 11:39 AM
DEADLINE EXTENDED for MFED25 registration to 14 May.
15 more in-person slots are available....To register please send your name, invoice address, status (regular or student), type of attendance (in-person/ online), & abstract (if applicable) ASAP to: [email protected].
15 more in-person slots are available....To register please send your name, invoice address, status (regular or student), type of attendance (in-person/ online), & abstract (if applicable) ASAP to: [email protected].
💥 New paper out!
🌱 The cyanobacterium Gloeomargarita lithophora removes over 98% of radioactive 90Sr from synthetic nuclear effluents in just 72 hours!
⚛️ Bioremediation gets a serious upgrade.
📖 Read more: doi.org/10.1016/j.jh...
#environmentalscience #nuclearremediation #cyanobacteria
🌱 The cyanobacterium Gloeomargarita lithophora removes over 98% of radioactive 90Sr from synthetic nuclear effluents in just 72 hours!
⚛️ Bioremediation gets a serious upgrade.
📖 Read more: doi.org/10.1016/j.jh...
#environmentalscience #nuclearremediation #cyanobacteria
Redirecting
doi.org
April 9, 2025 at 2:42 PM
💥 New paper out!
🌱 The cyanobacterium Gloeomargarita lithophora removes over 98% of radioactive 90Sr from synthetic nuclear effluents in just 72 hours!
⚛️ Bioremediation gets a serious upgrade.
📖 Read more: doi.org/10.1016/j.jh...
#environmentalscience #nuclearremediation #cyanobacteria
🌱 The cyanobacterium Gloeomargarita lithophora removes over 98% of radioactive 90Sr from synthetic nuclear effluents in just 72 hours!
⚛️ Bioremediation gets a serious upgrade.
📖 Read more: doi.org/10.1016/j.jh...
#environmentalscience #nuclearremediation #cyanobacteria
Reposted by Karim Benzerara
Technical note: Flow cytometry assays for the detection, counting and cell sorting of polyphosphate-accumulating bacteria bg.copernicus.org/articles/22/... #jcampubs
Technical note: Flow cytometry assays for the detection, counting and cell sorting of polyphosphate-accumulating bacteria
Abstract. In the context of the ecological sustainability of phosphorus, emerging evidence for the ubiquitous presence of polyphosphate-accumulating bacteria in natural environments invites efforts to...
bg.copernicus.org
April 7, 2025 at 3:22 PM
Technical note: Flow cytometry assays for the detection, counting and cell sorting of polyphosphate-accumulating bacteria bg.copernicus.org/articles/22/... #jcampubs
Reposted by Karim Benzerara
Cette année, ce sera ma première gorgée de @pintofscience.fr. Avec Juliette Pastore, je suis sûr que j’en garderai un excellent souvenir.
Cette année encore des membres du LISA présenteront leurs recherches lors de #Pint25
Venez écouter @hcottin.bsky.social et Juliette Pastore lors d'une soirée passionnante sur l'exobiologie ☄️
➡️ pintofscience.fr/event/lodyss...
Et les collègues du LEESU 🌍
➡️ pintofscience.fr/events/malak...
Venez écouter @hcottin.bsky.social et Juliette Pastore lors d'une soirée passionnante sur l'exobiologie ☄️
➡️ pintofscience.fr/event/lodyss...
Et les collègues du LEESU 🌍
➡️ pintofscience.fr/events/malak...
April 7, 2025 at 6:14 PM
Cette année, ce sera ma première gorgée de @pintofscience.fr. Avec Juliette Pastore, je suis sûr que j’en garderai un excellent souvenir.
From our planet: hydrothermal pond, Festuca orthophylla (paja brava) and donkeys in the back and volcano. What a wonderful worl. @biomin-impmc.bsky.social @deemteam.bsky.social
March 6, 2025 at 3:18 PM
From our planet: hydrothermal pond, Festuca orthophylla (paja brava) and donkeys in the back and volcano. What a wonderful worl. @biomin-impmc.bsky.social @deemteam.bsky.social
March 3, 2025 at 7:33 PM
Reposted by Karim Benzerara
Microbial mats and volcanoes in Salar de Carcote.
March 2, 2025 at 10:28 PM
Microbial mats and volcanoes in Salar de Carcote.
On the road from Ollague to our next sampling point. Que lindo!
@biomin-impmc.bsky.social @deemteam.bsky.social
@biomin-impmc.bsky.social @deemteam.bsky.social
March 2, 2025 at 1:01 PM
On the road from Ollague to our next sampling point. Que lindo!
@biomin-impmc.bsky.social @deemteam.bsky.social
@biomin-impmc.bsky.social @deemteam.bsky.social
@deemteam.bsky.social @biomin-impmc.bsky.social
Just arrived in Atacama with the DEEM team to study microbialites in the next days
Just arrived in Atacama with the DEEM team to study microbialites in the next days
February 26, 2025 at 9:59 PM
@deemteam.bsky.social @biomin-impmc.bsky.social
Just arrived in Atacama with the DEEM team to study microbialites in the next days
Just arrived in Atacama with the DEEM team to study microbialites in the next days
Reposted by Karim Benzerara
We seek a postdoc with experience in FTIR and other spectroscopic methods for the study of minerals, metals, and plastic polymer chemistry.
More info: employment.ku.dk/faculty/?sho...
Deadline: 18 March 2025
@ucph.bsky.social @carlsbergfondet.dk
#plastics #geoscience #spectroscopy
posthlab.com
More info: employment.ku.dk/faculty/?sho...
Deadline: 18 March 2025
@ucph.bsky.social @carlsbergfondet.dk
#plastics #geoscience #spectroscopy
posthlab.com
February 20, 2025 at 9:30 AM
We seek a postdoc with experience in FTIR and other spectroscopic methods for the study of minerals, metals, and plastic polymer chemistry.
More info: employment.ku.dk/faculty/?sho...
Deadline: 18 March 2025
@ucph.bsky.social @carlsbergfondet.dk
#plastics #geoscience #spectroscopy
posthlab.com
More info: employment.ku.dk/faculty/?sho...
Deadline: 18 March 2025
@ucph.bsky.social @carlsbergfondet.dk
#plastics #geoscience #spectroscopy
posthlab.com
Reposted by Karim Benzerara
📰 "La Science taille XX Elles": une expo incontournable pour changer les mentalités sur les femmes scientifiques
A lire sur geo.fr ! ⤵️
www.geo.fr/sciences/la-...
@cnrs.fr @cnrs-paris.bsky.social
A lire sur geo.fr ! ⤵️
www.geo.fr/sciences/la-...
@cnrs.fr @cnrs-paris.bsky.social
"La Science taille XX Elles": une expo incontournable pour changer les mentalités sur les femmes scientifiques
Face à la sous-représentation des femmes dans les sciences, l’association Femmes & Sciences, en collaboration avec le CNRS, organise chaque année une exposition qui met...
www.geo.fr
February 17, 2025 at 3:23 PM
📰 "La Science taille XX Elles": une expo incontournable pour changer les mentalités sur les femmes scientifiques
A lire sur geo.fr ! ⤵️
www.geo.fr/sciences/la-...
@cnrs.fr @cnrs-paris.bsky.social
A lire sur geo.fr ! ⤵️
www.geo.fr/sciences/la-...
@cnrs.fr @cnrs-paris.bsky.social
Reposted by Karim Benzerara
[ #VeilleESR #LPPR ] La position scientifique de la France dans le monde et en Europe : analyse de différents corpus de publications et de projets européens
Mise à jour de la note stratégique du #HCERES
(merci à @collend.bsky.social)
www.hceres.fr/fr/publicati...
Mise à jour de la note stratégique du #HCERES
(merci à @collend.bsky.social)
www.hceres.fr/fr/publicati...
La position scientifique de la France dans le monde et en Europe : analyse de différents corpus de publications et de projets européens
www.hceres.fr
February 19, 2025 at 10:33 AM
[ #VeilleESR #LPPR ] La position scientifique de la France dans le monde et en Europe : analyse de différents corpus de publications et de projets européens
Mise à jour de la note stratégique du #HCERES
(merci à @collend.bsky.social)
www.hceres.fr/fr/publicati...
Mise à jour de la note stratégique du #HCERES
(merci à @collend.bsky.social)
www.hceres.fr/fr/publicati...
Reposted by Karim Benzerara
Mostly preaching to the choir here, but a group of us moderators over on Reddit's AskScience put together kind of an explainer for the implications of some of the attacks on science funding and infrastructure in the US if it's useful for anyone else to share:
From the askscience community on Reddit
Explore this post and more from the askscience community
www.reddit.com
February 19, 2025 at 2:52 PM
Mostly preaching to the choir here, but a group of us moderators over on Reddit's AskScience put together kind of an explainer for the implications of some of the attacks on science funding and infrastructure in the US if it's useful for anyone else to share:
New paper by Havas et al. in Geobiology. dx.doi.org/10.1111/gbi....
Systematic measurements of C and O isotope compositions of modern microbialites from 4 mexican lakes show how varying alkalinities significantly impact the recorded isotopic signatures. #geomicrobiology @biomin-impmc.bsky.social
Systematic measurements of C and O isotope compositions of modern microbialites from 4 mexican lakes show how varying alkalinities significantly impact the recorded isotopic signatures. #geomicrobiology @biomin-impmc.bsky.social
February 15, 2025 at 4:42 PM
New paper by Havas et al. in Geobiology. dx.doi.org/10.1111/gbi....
Systematic measurements of C and O isotope compositions of modern microbialites from 4 mexican lakes show how varying alkalinities significantly impact the recorded isotopic signatures. #geomicrobiology @biomin-impmc.bsky.social
Systematic measurements of C and O isotope compositions of modern microbialites from 4 mexican lakes show how varying alkalinities significantly impact the recorded isotopic signatures. #geomicrobiology @biomin-impmc.bsky.social