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Reposted by James Bradley

James Bradley @drbradbrad.bsky.social · 16d

Please circulate among your bioinformatics students! 🧬🖥️❄️🦠

James Bradley @drbradbrad.bsky.social · 23d

📢 PLEASE RT!
❄️ M2 Masters Internship: Metagenomic analysis of microbial cold adaptation in the cryosphere
🧬 Compile & curate ice nucleation & cold-adaptation protein database
🖥️ Build HMM profiles
🦠 Analyze existing metagenomic data using HMMs

☀️ Marseille, France
Apply by 15 Oct

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Reposted by James Bradley

James Bradley @drbradbrad.bsky.social · 28d

2 Postdoc vacancies: Microbial dormancy in the cryosphere
@erc.europa.eu #ERC_SIESTA
📢 PLEASE RT

Experimental:
🧬 Single cell microbial activity measurements, flow cytometry, omics, biogeochem

Modelling:
🖥️ Bioenergetics, thermodynamics, ecological, biogeochem

☀️ Marseille, France
‼️ Apply by 30 Sept

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James Bradley @drbradbrad.bsky.social · 16d

Please circulate among your bioinformatics students! 🧬🖥️❄️🦠

James Bradley @drbradbrad.bsky.social · 23d

📢 PLEASE RT!
❄️ M2 Masters Internship: Metagenomic analysis of microbial cold adaptation in the cryosphere
🧬 Compile & curate ice nucleation & cold-adaptation protein database
🖥️ Build HMM profiles
🦠 Analyze existing metagenomic data using HMMs

☀️ Marseille, France
Apply by 15 Oct

4 3

Reposted by James Bradley

James Bradley @drbradbrad.bsky.social · 23d

📢 PLEASE RT!
❄️ M2 Masters Internship: Metagenomic analysis of microbial cold adaptation in the cryosphere
🧬 Compile & curate ice nucleation & cold-adaptation protein database
🖥️ Build HMM profiles
🦠 Analyze existing metagenomic data using HMMs

☀️ Marseille, France
Apply by 15 Oct

1 19 12

James Bradley @drbradbrad.bsky.social · 23d

📢 PLEASE RT!
❄️ M2 Masters Internship: Metagenomic analysis of microbial cold adaptation in the cryosphere
🧬 Compile & curate ice nucleation & cold-adaptation protein database
🖥️ Build HMM profiles
🦠 Analyze existing metagenomic data using HMMs

☀️ Marseille, France
Apply by 15 Oct

1 19 12

James Bradley @drbradbrad.bsky.social · 28d

Modelling postdoc - APPLY HERE: Postdoc in geomicrobiology modelling
emploi.cnrs.fr/Offres/CDD/U...

Portail Emploi CNRS - Offre d'emploi - Postdoc in geomicrobiology modelling: microbial dormancy in Earth's ecosystems and biogeochemistry M/F

emploi.cnrs.fr

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James Bradley @drbradbrad.bsky.social · 28d

Experimental postdoc - APPLY HERE: Postdoc in Arctic geomicrobiology and biogeochemistry
emploi.cnrs.fr/Offres/CDD/U...

Portail Emploi CNRS - Offre d'emploi - Postdoc in Arctic geomicrobiology and biogeochemistry M/F

emploi.cnrs.fr

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James Bradley @drbradbrad.bsky.social · 28d

2 Postdoc vacancies: Microbial dormancy in the cryosphere
@erc.europa.eu #ERC_SIESTA
📢 PLEASE RT

Experimental:
🧬 Single cell microbial activity measurements, flow cytometry, omics, biogeochem

Modelling:
🖥️ Bioenergetics, thermodynamics, ecological, biogeochem

☀️ Marseille, France
‼️ Apply by 30 Sept

2 37 31

James Bradley @drbradbrad.bsky.social · 29d

Thanks for your interest! Unfortunately the “gratification de stage” / "internship allowance" in France for a stagiaire is only ~650 euros/month

Reposted by James Bradley

Ketan Joshi @ketanjoshi.co · 29d

"Polar geoengineering proposals raise false hopes for averting some disastrous consequences of climate change without rapidly cutting,,emissions"

"They risk encouraging complacency about the urgency of achieving net zero or may be used by powerful actors as an excuse to justify continued emissions"

High-tech plans to save polar ice will fail, new research finds

The plans could also unintentionally harm fragile polar ecosystems.

theconversation.com

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Reposted by James Bradley

Bob Berwyn @bberwyn.bsky.social · 29d

More and more time, money and attention is going toward foolish and risky ventures that divert attention from cutting CO2 emissions ...

Geoengineering Won’t Save Us From Global Warming - Inside Climate News

New research by a team of top ice and climate scientists debunks some speculative technological climate fixes for preserving the polar ice caps.

insideclimatenews.org

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James Bradley @drbradbrad.bsky.social · Sep 8

link with further details: euraxess.ec.europa.eu/jobs/372103

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James Bradley @drbradbrad.bsky.social · Sep 5

Successfully defended my Habilitation à Diriger des Recherches (HDR - France's highest academic qualification) at @mioceanologie.bsky.social on Monday. Thanks to all who attended and especially the committee 😃🎓🌎🧬❄️🦠🌊

L-R: Thierry Bouvier, Karim Benzerara, Françoise Bringel, James Bradley, Valérie Michotey, Adrienne Kish, Graeme Nicol

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Reposted by James Bradley

Dr. Or M. Bialik |📚|🔬|🌊|⚒️ @obialik.bsky.social · Aug 25

An assumption we long had in Earth Sci was that, in the geological past, more diversity meant more life in general. Someone finally got around to checking that, and it works! Biomass patterns follow the biodiversity curve. 🧪⚒️

Link: www.cell.com/current-biol...

Variation in the biomass of metazoans and their biodiversity across the Phanerozoic

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Reposted by James Bradley

Jonathan Gropp @biogeochem345.bsky.social · Aug 21

Our story about microbial methane is out! We found that reducing the expression of a key gene of methanogenesis modulates the isotopic composition of the methane:
www.science.org/doi/10.1126/...

Check out also the coverage at the UC Berkeley News website:
news.berkeley.edu/2025/08/14/s...

Modulation of methyl–coenzyme M reductase expression alters the isotopic composition of microbial methane

The stable isotopic composition of microbial methane varies substantially, and the underlying causes are debated. In this work, we experimentally controlled the abundance of the central enzyme in meth...

www.science.org

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Reposted by James Bradley

Allan Konopka @hamatsa50.bsky.social · Aug 10

Thinking about the limits to microbial life in TLaM ...
🧪🧫 #philsci
open.substack.com/pub/thinkmic...

How slow can you "grow"?

What are the limits for energy fluxes and macromolecule stability?

open.substack.com

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Reposted by James Bradley

Chris Greening @greening.bsky.social · Aug 8

1/3 Electricity from air! In the top journal Nano Energy today, we report the first fuel cell that makes power from air alone. We achieved this by using the enzyme Huc to oxidize ambient hydrogen. This results in a continuous low-level power from air and higher outputs with industrial waste gases.

Nanoengineered bioanode with oxygen-insensitive hydrogenase for sustainable energy harvesting from atmospheric hydrogen and waste gases

Enzymatic biofuel cells (EBFCs) utilizing hydrogenases to oxidize hydrogen offer a sustainable approach to energy conservation. However, the oxygen se…

www.sciencedirect.com

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Reposted by James Bradley

Amelia Rotaru @ameliarotaru.bsky.social · Aug 7

Check this nice first first-author paper by Ning Hall—now out in Nature Geoscience! Our team had a blast supporting Ning on the isolation workflow, and a few of the standout Methanococcoides strains even trace back to our Danish waters. 🌊
www.nature.com/articles/s41...

Coastal methane emissions driven by aerotolerant methanogens using seaweed and seagrass metabolites - Nature Geoscience

Experiments suggest aerotolerant archaea produce methane in the surface layers of coastal sandy sediments and that this activity is driven by seaweed and seagrass metabolites.

www.nature.com

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Reposted by James Bradley

Chris Greening @greening.bsky.social · Aug 8

Masterpiece paper from Ning, Perran, Amelia and co! Great mix of field-based geochemistry, laboratory manipulations, methanogen cultivation, and isolate / environmental genomics. An unexpected feedback between eutrophication and climate change that could shake up how we think about methane budgets.

Amelia Rotaru @ameliarotaru.bsky.social · Aug 7

Check this nice first first-author paper by Ning Hall—now out in Nature Geoscience! Our team had a blast supporting Ning on the isolation workflow, and a few of the standout Methanococcoides strains even trace back to our Danish waters. 🌊
www.nature.com/articles/s41...

Coastal methane emissions driven by aerotolerant methanogens using seaweed and seagrass metabolites - Nature Geoscience

Experiments suggest aerotolerant archaea produce methane in the surface layers of coastal sandy sediments and that this activity is driven by seaweed and seagrass metabolites.

www.nature.com

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Reposted by James Bradley

Eos @eos.org · Aug 7

We know tiny life-forms like bacteria float through our atmosphere. But do they also proliferate and form communities there? New research suggests a modeling approach that could help answer this question.

eos.org/research-spo...

Can Microorganisms Thrive in Earth’s Atmosphere, or Do They Simply Survive There? - Eos

A bottom-up modeling approach could bring scientists closer to understanding communities of microbes in the atmosphere.

eos.org

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James Bradley @drbradbrad.bsky.social · Aug 8

Does the atmosphere harbour a resident, growing microbial ecosystem? ⛅

Our @jgrbiogeo.bsky.social article is covered in @eos.org access via the link below 👇

@drmartinezrabert.bsky.social @mioceanologie.bsky.social @cnrs.fr @cnrsecologie.bsky.social @cnrs-insu.bsky.social

Eos @eos.org · Aug 7

We know tiny life-forms like bacteria float through our atmosphere. But do they also proliferate and form communities there? New research suggests a modeling approach that could help answer this question.

eos.org/research-spo...

Can Microorganisms Thrive in Earth’s Atmosphere, or Do They Simply Survive There? - Eos

A bottom-up modeling approach could bring scientists closer to understanding communities of microbes in the atmosphere.

eos.org

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James Bradley @drbradbrad.bsky.social · Jul 31

Expertly led by @drmartinezrabert.bsky.social at @mioceanologie.bsky.social w @greening.bsky.social @jackiegoordial.bsky.social & others

🙏 @hfspo.bsky.social aeromicrobiome project RGY0058/2022‬‬‬‬‬‬‬‬‬‬

@erc.europa.eu #ERC_SIESTA @agencerecherche.bsky.social @cnrs.fr

tinyurl.com/7pdfm7uw

Investigating the Atmospheric Microbial Ecosystem Through Theory, Bioenergetics, and Numerical Modeling: A Breath of Fresh Air for Aeromicrobiology

Aerobiology research is hindered by several technical challenges facing experimental studies, sampling, and monitoring strategies Theoretical approaches and numerical modeling tools provide power...

tinyurl.com

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James Bradley @drbradbrad.bsky.social · Jul 31

We outline & discuss many theoretical & model approaches 📝

We also outline how, despite many applications & insights, modelling isn't an end in itself 🔖

We also need biological physical & chemical developments in experimentation and observation 🔬

Do you think the atmosphere is a true ecosystem? 🌨️

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James Bradley @drbradbrad.bsky.social · Jul 31

We outline how theory & models can advance knowledge of the aeromicrobiome by exploring:
🧪 catabolism & anabolism
🦠 microbial physiology & metabolic states
⚡ thermodynamics & bioenergetics
🌩️ atmosphere & bioaerosol properties
🌪️ microbe transport & residence time
🛠️ bottom-up & top-down approaches

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James Bradley @drbradbrad.bsky.social · Jul 31

Earth's atmosphere is known to passively transport biological material through the air 🦠🌎

But does it also sustain life residing in & adapted to the air? 🌨️

Aerobiology research is hindered by several challenges including:
🧬 low biomass
⚡ low activity
😷 contamination

tinyurl.com/5epwua83

The atmosphere: a transport medium or an active microbial ecosystem?

Abstract. The atmosphere may be Earth’s largest microbial ecosystem. It is connected to all of Earth’s surface ecosystems and plays an important role in mi

tinyurl.com

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