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Tom Gernon

@gernon.bsky.social
990 followers 785 following 70 posts

Interdisciplinary Earth Scientist; Professor at University of Southampton, UK thomasgernon.co.uk He/him

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Tom Gernon @gernon.bsky.social · 24/09/2026
Imagine a world where the future of research is limited by AI. It is here.
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Paul Voosen @voosen.me · 23/09/2026
Appreciate @chriscmooney.bsky.social's look at science magazines, including the role of societies and the history of Science 79-86. One thing to add: @science.org, AAAS still has the world's largest (?) science-focused newsroom. We're in print, every week. Editorially independent. And a nonprofit!
reportearth.substack.com
Nearly two centuries of U.S. science magazines, and the lessons they teach
And a response about the future of the science journalism field.
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Tom Gernon @gernon.bsky.social · 15/09/2026
Nice to discuss the recent Gondwana supercontinent paper (www.science.org/doi/10.1126/...) with science columnist Anjana Ahuja of the @financialtimes.com
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Paul Voosen @voosen.me · 09/09/2026
Things I didn't know until now: Good chunks of the U.S. eastern seaboard and southern Europe were once part of Gondwana. Now a group argues, using dates exhumed from basement granites, that the fabled mega/super continent, always in Pangea's shadow, may have been even larger.
science.org
Pangaea’s ‘little brother’ may finally qualify as a supercontinent
New evidence suggests Gondwana was far larger than previously thought, challenging models of continental cycling
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James Dinneen @jamesdinneen.bsky.social · 14/08/2026
Average sea surface temps today at 21.06C, according to @copernicusecmwf.bsky.social. That's just 0.03C below the all-time record from March 2024. www.nature.com/articles/d41... @nature.com
nature.com
Ocean temperatures set to break all-time record: what’s next?
High sea surface temperatures are expected to weaken ocean carbon sinks and damage coral reefs.
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Andrej Spiridonov @andrejpaleo.bsky.social · 04/08/2026
Glad to share our new study at @natcomms.nature.com which resulted from several workshops on the early warning signs of mass extinctions and coordination of macroevolutionary vulnerability and the states of carbon cycle and temperatures. www.nature.com/articles/s41... 🧪⚒️ #Geology #Paleobio #EvoBio
Recurrence-based identificationofPhanerozoicmega-climate states and
early-warning structurePhanerozoic vulnerability across five mega-climate states
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James Dinneen @jamesdinneen.bsky.social · 28/07/2026
Firefighters in Oregon, Spain, and now France (?!) are battling wildfires big enough to generate pyrocumulonimbus clouds. These fire storms are treacherous on the ground. But scientists are concerned about the *planetary* consequences of injecting so much smoke into the upper atmosphere...🌍🔥🧵
This image shows a pyrocumulonimbus cloud rising from the 2022 Mosquito Fire, burning near the Middle Fork American River and Foresthill, California, taken in the afternoon of September 08, 2022.
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James Dinneen @jamesdinneen.bsky.social · 23/07/2026
There's gold in them thar......subducted seamounts?? This is cool from @gernon.bsky.social etal. www.science.org/doi/full/10....
science.org
Seamount subduction drives bonanza-grade gold mineralization
A “start button” for the formation of giant gold deposits on Earth is the subduction of plume-related seamounts.
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Paul Voosen @voosen.me · 16/07/2026
My latest for @science.org: Scientists have discovered a new record-breaking ancient meteorite from Mars, formed more than 4.1 billion years ago. Dubbed Teghaza 001, it provides an unprecedented view of the martian crust from this time, suggesting it was much more complex than once thought.
science.org
Oldest known Mars rock offers glimpse of planet’s watery youth
Ancient Teghaza meteorite hints at granitelike crust and shows Mars was already losing its water 4.1 billion years ago
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Tom Gernon @gernon.bsky.social · 10/07/2026
I'm getting really worried about the EGU executive office. They've not emailed for 21 mins 🥺
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Tom Gernon @gernon.bsky.social · 10/07/2026
🤷🏻
A series of emails, all the same, from the European Geophysical Union seeking new candidates. It is probably due to a glitch with their email server
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Eos @eos.org · 04/07/2026
The formation of the East Antarctic Ice Sheet has stumped scientists. Could a tectonic event that took place tens of millions of years prior offer an explanation? eos.org/articles/the...
eos.org
The Breakup of Gondwana Over 100 Million Years Ago May Be Why Antarctica Has Ice Today - Eos
A rift event set off a domino effect of geologic processes that created conditions ripe for Antarctica’s glaciation, a new study suggests.
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Paul Voosen @voosen.me · 02/07/2026
My latest for @science.org: The rifting of Gondwana likely led, some *100 million* years later, to the formation of the Antarctic Ice Sheet. (Yes, CO2 decline was also part of it.) The past isn't even past. A fascinating expansion of @gernon.bsky.social's mantle waves work.
science.org
How an ancient continental breakup helped spawn the Antarctic Ice Sheet
Mantle waves and tectonic stretching lofted polar mountains into a deep freeze
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Sar Crespi @boron110.bsky.social · 02/07/2026
How Antarctica got it's ice sheets -- this week on the @science.org podcast w/ @meagancantwell.bsky.social and Thomas Gernon listen here: www.science.org/content/podc...
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Tom Gernon @gernon.bsky.social · 03/07/2026
Really nice to read this in-depth feature in @science.org on our Science paper on East Antarctic Ice Sheet formation. A huge thanks to @voosen.me for your continued interest in and coverage of the mantle waves story! www.science.org/content/arti...
science.org
How an ancient continental breakup helped spawn the Antarctic Ice Sheet
Mantle waves and tectonic stretching lofted polar mountains into a deep freeze
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GFZ Helmholtz-Zentrum für Geoforschung @gfz.bsky.social · 03/07/2026
Wir haben natürlich auch eine deutsche Version der Antwort auf die Frage, warum die Antarktis rund 30 Mio Jahre eher vereiste als die Arktis 👇🏻 www.gfz.de/presse/meldu...
gfz.de
Warum wuchs der antarktische Eisschild viele Millionen Jahre früher als das Eis in der Arktis?
Die durch Gesteins-Tropfen an der Unterseite der antarktischen Platte verursachte Kontinentalhebung hob die Landmasse über einen Kipppunkt hinaus, ab dem Eis wachsen und bestehen bleiben konnte.
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Tom Gernon @gernon.bsky.social · 03/07/2026
Our new study on how uplifting terrain in Antarctica helped provoke glaciation is out @science.org. Delighted to see this work through after many years. www.science.org/doi/10.1126/... @sasbrune.bsky.social @gfz.bsky.social @derekkeir.bsky.social @polarguy.bsky.social @unisouthampton.bsky.social
science.org
Continental breakup–driven uplift instigated East Antarctic Ice Sheet formation
Why Antarctica became glaciated ∼34 million years ago (Ma) remains debated, as relatively warm climates and sea temperatures appear inconsistent with ice sheet formation. Although a critical decline i...
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GFZ Helmholtz-Zentrum für Geoforschung @gfz.bsky.social · 03/07/2026
Yes. Highly recommended reading! Some of our colleagues were involved in the study, for instance @sasbrune.bsky.social If you want to read our press release (based on the one of University of Southampton), click the link 👇🏻 www.gfz.de/en/press/new...
gfz.de
Why did the Antarctic ice sheet grow many million years earlier than the Arctic ice?
Continental uplift, caused by drips at the underside of the Antarctic plate, elevated the landmass above a tipping point where ice could grow and remain.
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Aaron Putnam @aaronputnam.bsky.social · 03/07/2026
Fascinating piece in The Conversation by @gernon.bsky.social discussing recent work by him and his colleagues investigating how continental breakup and consequent mantle dynamics may have primed the topography of Antarctica for glaciation ~34 million years ago. theconversation.com/why-antarcti...
theconversation.com
Why Antarctica froze millions of years before the Arctic – new research
New solutions to two interlinked mysteries reveal how and why the Antarctic’s enormous ice sheet formed.
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Christine Siddoway @iphigenesdream.bsky.social · 29/06/2026
@gernon.bsky.social has a good read in www.americanscientist.org/article/mant... @americanscientist.org . Marvelous figures!
americanscientist.org
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Tom Gernon @gernon.bsky.social · 28/06/2026
💯 from Dave Eggers: "can think of nothing worse than “the idea of us willingly... saying ‘I think my voice would be better expressed by an unthinking machine who has plagiarised all of the world’s authors and has come up with this terrible soup of bad writing.’" www.theguardian.com/books/2026/j...
theguardian.com
Dave Eggers: ‘Once you have a machine think and write for you, you’re cooked as a species’
As his new novel is published, the US author talks about nurturing the next generation of creatives, debating Sam Altman – and why he writes on a boat in San Francisco Bay
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Paul Voosen @voosen.me · 20/06/2026
If you want to *really* get into the question of whether climate change is worsening El Niño, @science.org had a feature on it in 2024. (It also features the first time I ever had to evacuate for a cyclone.)
science.org
On a remote Pacific island, clues to El Niño’s future are preserved in ancient reefs
Researchers exhume fossilized corals to predict the fate of a key climate pacemaker in a warmer world
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Michael E. Mann @michaelemann.bsky.social · 20/06/2026
this ⬇️
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Nature Geoscience @natgeosci.nature.com · 16/06/2026
⚒️ Article: The burial of terrestrially-derived organic carbon in coastal marine sediments greatly increased during the Paleocene-Eocene Thermal Maximum @climategordon.bsky.social @sotonoceanearth.bsky.social @unisouthampton.bsky.social www.nature.com/articles/s41...
nature.com
Enhanced marine burial of terrestrial organic carbon through the Palaeocene–Eocene Thermal Maximum - Nature Geoscience
The burial of terrestrially derived organic carbon in coastal marine sediments greatly increased during the Palaeocene–Eocene Thermal Maximum, probably helping to draw down a large portion of carbon r...
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Charles Hill @charleswlhill.bsky.social · 29/05/2026
My homeland is leading the world right now.
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Tom Gernon @gernon.bsky.social · 13/04/2026
"Not even Hitler or Mussolini attacked the Pope so directly and publicly" www.bbc.co.uk/news/article...
bbc.co.uk
Pope says he has 'no fear' of Trump after scathing criticism
The US president accuses Leo of being
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The Guardian @theguardian.com · 07/04/2026
Protecting civilians is a sign of strength – and an American ideal | Ted Widmer
theguardian.com
Protecting civilians is a sign of strength – and an American ideal | Ted Widmer
The US was founded on a pledge to limit the damages of war, even if it has often failed to uphold its commitment
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Alt National Park Service @altnps.bsky.social · 07/04/2026
RAPID ACTION ALERT: WHITE HOUSE TONIGHT Emergency protest at the White House at 7 PM. This morning, Trump posted on Truth Social: “A whole civilization will die tonight, never to be brought back again.” He has set an 8 PM deadline for Iran to reopen the
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News Eye @newseye.bsky.social · 07/04/2026
NOW: B52 bombers are literally in the air on their way to Iran and hundreds of thousands of Iranians are in the streets waving flags and surrounding bridges & power plants. Difficult to imagine this has any precedent in modern warfare. (🎥 Al Jazeera)
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Elizabeth Warren @warren.senate.gov · 07/04/2026
President Trump is threatening war crimes of horrific proportions against civilians. It’s deranged. This madness must stop.
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Science Magazine @science.org · 01/03/2026
Researchers say the ancient breakup of tectonic plates creates churning waves in Earth’s mantle that tumble in slow motion under the continents for tens of millions of years, sculpting topography deep within continental interiors. Learn more: scim.ag/4s8GTEs #ScienceMagArchives
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Science News @sciencenews.bsky.social · 20/02/2026
Our planet’s average temperature plummeted between 717 and 658 million years ago, causing a worldwide ice age dubbed Snowball Earth. www.sciencenews.org/article/snowbal…
sciencenews.org
Snowball Earth might have had a dynamic climate and open seas
Sediments from Scotland hint that ocean-atmosphere interactions continued more than 600 million years ago despite widespread ice.
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Tom Gernon @gernon.bsky.social · 20/02/2026
"Snowball Earth might have had a dynamic climate and open seas": a nice article about our new study led by the amazing @cgrifgeo.bsky.social, just published in @scinews.bsky.social www.sciencenews.org/article/snow... @unisouthampton.bsky.social
sciencenews.org
Snowball Earth might have had a dynamic climate and open seas
Sediments from Scotland hint that ocean-atmosphere interactions continued more than 600 million years ago despite widespread ice.
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Tom Gernon @gernon.bsky.social · 15/02/2026
Slightly late to the party, but here's a link to access our new open access paper reporting "Interannual to multidecadal climate oscillations occurred during Cryogenian glaciation" led by the amazing @cgrifgeo.bsky.social www.sciencedirect.com/science/arti...
sciencedirect.com
Interannual to multidecadal climate oscillations occurred during Cryogenian glaciation
During the two Cryogenian snowball Earth glaciations, the Sturtian (ca. 717–658 Ma) and Marinoan (ca. 639–635 Ma), ice persisted in the tropics for mi…
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University of Southampton @unisouthampton.bsky.social · 09/02/2026
Hundreds of millions of years ago our planet was frozen, in a state called Snowball Earth. Researchers here at Southampton have examined how the climate would have fluctuated. Read more: tr.pulse.ly/si1ggtin1u @gernon.bsky.social | @cgrifgeo.bsky.social | @sotonoceanearth.bsky.social
The Earth is covered in cracked ice, creating a textured, white surface. Set against a dark space background with subtle stars and a stretch of the Milky Way galaxy visible on the right side.A coastal landscape in Scotland with rugged cliffs and grassy hillsides jutting into calm blue waters under a partly cloudy sky.
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Christine Siddoway @iphigenesdream.bsky.social · 07/01/2026
Model simulation of the #MPWP glacial-deglacial switching (more than 5 deep retreats to #EllsworthMountains province) is breathtaking in this animation by ARHalberstadt : youtu.be/uu2vlzrP2vk
youtu.be
AIS Pliocene heartbeat
YouTube video by Anna Ruth Halberstadt
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University of Southampton @unisouthampton.bsky.social · 06/01/2026
Congratulations to Professor John Marshall on his Polar Medal, recognising his decades of research in the harsh polar regions. Awarded by His Majesty King Charles III to those who have made outstanding achievements in polar research. Find out more: www.southampton.ac.uk/news/2026/01...
Professor John Marshall, in outdoor attire, operates a power drill on a rocky, barren mountainside. He wears a dark hat, glasses, and has a gray beard. The terrain is steep with loose dirt and stones. Two people in bright orange survival suits and life jackets are on a small inflatable boat. They are navigating icy waters, with icebergs visible in the background and a cloudy sky overhead. One person is handling the motor, while the other sits facing forward.Red and black tents are pitched on a snowy, rocky slope under an overcast sky. The ground is thinly covered with snow, revealing many stones. The background shows a large, snow-dusted hill.Professor John Marshal with glasses and a hat smiles at the camera while sitting beside a rocky outcrop. He is wearing a beige vest and blue sleeves. In front of him are geological tools including a hammer, measuring tape, and a notepad with notes.
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Zahra Hirji @zhirji.bsky.social · 17/12/2025
“To shutter this facility is, frankly, a national security risk,” Kim Cobb told @bloomberg.com about NCAR, given its cutting-edge work on extreme weather and across fields including machine learning and AI. Story w/ @eroston.bsky.social @willwwade.bsky.social: www.bloomberg.com/news/article...
bloomberg.com
Trump Administration Aims to Dismantle Key Climate Research Hub
The US plans to dismantle the National Center for Atmospheric Research, a key climate-science hub in Boulder, Colorado, which the Trump administration says strayed from its mission decades ago by taki...
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Helen Czerski @helenczerski.bsky.social · 07/12/2025
TIL about a memorial ceremony in Iceland in 2019 to mark the end of a glacier, changing the place name from Okjökull to Ok (jökull = glacier). Uncompromising wording on the bronze plaque: "This is to acknowledge that we know what is happening and what needs to be done. Only you know if we did it".
Bronze plaque saying "A Letter to the Future. Ok is the first Icelandic glacier to lose its status as a glacier. In the next 200 years all our glaciers are expected to follow the same path. This monument is to acknowledge that we know what is happening and what needs to be done. Only you know if we did it.  August 2019. 415ppm CO2"
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Nature Portfolio @natureportfolio.nature.com · 02/12/2025
Continental rifting erodes mantle roots, transporting enriched material into oceans and driving oceanic volcanism. A study in Nature Geoscience shows that continental break-up reorganizes shallow mantle dynamics, affecting the geosphere and carbon cycle. go.nature.com/3XjAk4G ⚒️ 🧪
Generation of EM under the continents.
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Nature Geoscience @natgeosci.nature.com · 11/11/2025
⚒️ Article: Convective erosion and lateral transport of metasomatized continental keels may generate enriched mantle geochemical domains @gernon.bsky.social @unisouthampton.bsky.social @ukiodp.bsky.social www.nature.com/articles/s41...
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Scottish Geology Trust @scottishgeology.bsky.social · 15/09/2025
Siccar Point is one of the most important geoheritage sites in the world; we think visitors deserve to hear why. Help us install a Deep Time Trail - donate to the Crowdfunder now. www.crowdfunder.co.uk/siccar-point youtu.be/OeHsVJiO9gE
youtu.be
Help us build a Deep Time Trail at Siccar Point
YouTube video by Scottish Geology Trust
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JB_AU @jbau.bsky.social · 28/09/2025
This whole section really.
Finally: AI cannot do your job, but an AI salesman can 100% convince your boss to fire you and replace you with an AI that can't do your job, and when the bubble bursts, the money-hemorrhaging "foundation models" will be shut off and we'll lose the AI that can't do your job, and you will be long gone, retrained or retired or "discouraged" and out of the labor market, and no one will do your job.
AI is the asbestos we are shoveling into the walls of our society and our descendants will be digging it out for generations:
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John Armitage @johnjarmitage.bsky.social · 04/09/2025
Out yesterday in @nature.com our study led by @gidden.bsky.social on how much carbon we can store in sedimentary basins. Key takeaways, (1) this is a limited resource, (2) most optimistically will limit global warming by 0.7°, (3) so let’s not waist it, but use it wisely.
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derekkeir.bsky.social @derekkeir.bsky.social · 30/07/2025
New ideas published in @geosociety.bsky.social Geology that the Northern Appalachian anomaly beneath the Eastern US is a migrating small-scale convection cell originating from past rifting of the Labrador Sea @gernon.bsky.social @sasbrune.bsky.social pubs.geoscienceworld.org/gsa/geology/...
pubs.geoscienceworld.org
A viable Labrador Sea rifting origin of the Northern Appalachian and related seismic anomalies | Geology | GeoScienceWorld
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derekkeir.bsky.social @derekkeir.bsky.social · 26/07/2025
Congrats to Rhiannon Rees on publication of her trace element study from Ayelu, Abida and Gabilema volcanoes in the Ethiopian rift www.frontiersin.org/journals/ear... @sorcerinsar.bsky.social @gernon.bsky.social @wattsvolcanology.bsky.social
frontiersin.org
Frontiers | Melt generation and evolution in the Adda’do rift segment of the Afar rift from trace elements and petrography
Along-rift variations in the stage of continental separation are observed in the northern East African Rift System (EARS), from magma-assisted continental ri...
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Rebecca Williams @volcanologist.bsky.social · 18/07/2025
NERC: We need to open up environmental science! Why is it not diverse? Also NERC: We're scrapping Independent Research Fellowships, New Investigator Grants, Small Grants, are limiting applications from institutions based on past success rates and will only allow you to submit your proposal once.
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Dorset Raptor Study Group @dorsetraptors.bsky.social · 17/07/2025
At last we are delighted to share with you this year's LIVE Hobby nest camera from a site within the Forestry England South Forest District. To view the live stream visit our website blog and click on the image. Enjoy! drsg.co.uk/f/fabulous-f... @dorsetbirdclub.bsky.social @harbourbirds.bsky.social
drsg.co.uk
Fabulous falcons go live!
2025 Hobby nest cam now live
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Nature Portfolio @natureportfolio.nature.com · 08/07/2025
The mantle upwelling beneath the Afar rift may be influenced by tectonic processes in the overriding lithospheric plates that shape the distribution of both compositional heterogeneties and abundance of melt, according to a paper in Nature Geoscience. 🧪
go.nature.com
Mantle upwelling at Afar triple junction shaped by overriding plate dynamics - Nature Geoscience
The mantle upwelling beneath the Afar rift may be influenced by tectonic processes in the overriding lithospheric plates that shape the distribution of both the compositional heterogeneities and abundance of melt, according to a geochemical and statistical study of volcanic samples.
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Nature Geoscience @natgeosci.nature.com · 25/06/2025
www.newsweek.com/geology-plat...
newsweek.com
Magma "heartbeat" is tearing continent apart, geologists discover
"The plume is pulsing," said Earth Science professor Tom Gernon of the University of Southampton.
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