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Matthew Selheimer

@mselheimer.bsky.social
286 followers 187 following 394 posts

Roman Archaeologist (PhD) | Tech Industry CMO and Go-to-Market Advisor | Texan and Pennsylvanian. I study Roman cities and marketing best practices. I’m happiest in the field, researching, or sharing knowledge.

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Reposted by Matthew Selheimer
Antiquity Journal @antiquity.ac.uk · 24/09/2026
It's #WorldMaritimeDay! ⚓️ Land visibility was vital to ancient mariners, who relied on the coast to navigate around the seas. A new map of coastal visibility around the Mediterranean helps explore nuanced questions about past seafaring. 🆓 doi.org/10.15184/aqy... 🏺 #Archaeology
Map of the Mediterranean Sea, coloured with a spectrum of visibility around the coasts based on land elevation over the horizon.
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Matthew Selheimer @mselheimer.bsky.social · 19/09/2026
Fun program for school teachers worth checking out!
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Reposted by Matthew Selheimer
Nina Willburger @drnwillburger.bsky.social · 04/09/2026
Too good not to share: a wooden floor of a #Neolithic house. Unearthed in Alleshausen-Grundwiesen, a wetland settlement at the western rim of the Federsee marshlands, 3020-2700 BC. 📷H. Schlichterle/Landesamt für Denkmalpflege Baden Württemberg 🏺 #archaeology
A lawn, squares of which have been dug out until a depth of around 30 cm. There are bicolor length indicators (red and white) and, on the flat uneathed bottom: a wooden floor : planks on joists. The wood is black and corroded.
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Matthew Selheimer @mselheimer.bsky.social · 02/09/2026
#1 rule for AI use, don’t use it for something that could kill you. Seriously.
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Matthew Selheimer @mselheimer.bsky.social · 02/09/2026
Just doing some gardening, that turned into archaeology… www.livescience.com/archaeology/...
livescience.com
'Biggest surprise of my life': Homeowner discovers Denmark's largest Viking Age silver hoard in their backyard
In Denmark, a homeowner digging in their backyard unexpectedly found the country's largest silver hoard from the Viking Age.
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Reposted by Matthew Selheimer
Jesse Felder @jessefelder.com · 27/08/2026
'Unlike the big tobacco settlement, which effectively shielded firms from most future lawsuits by states and individuals, the agreement doesn’t resolve the thousands of open lawsuits brought against Meta by consumers, school districts and other parties.' www.theinformation.com/articles/met...
theinformation.com
Meta’s Settlement Ends One Big Battle But the Wider Legal War Looms
Meta Platforms has fought one of its biggest court battles to an expensive draw. But lawyers scrutinizing Wednesday’s $18 billion settlement agreement with states said it won’t likely help the social ...
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Matthew Selheimer @mselheimer.bsky.social · 23/08/2026
Roman shops often featured boards inserted into a grooved threshold to restrict access at night. In this cast from Pompeii, you can see not only the boards but, on the right, an access door. These protected shop contents and also upper living quarters which were also common. #archaeology
Cast of shutter boards (left) and access door (right) inserted into a grooved threshold to protect Roman shop contents and upper living quarters at night. Location: Pompeii
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Matthew Selheimer @mselheimer.bsky.social · 14/08/2026
“Specifically, the object likely contains a central black hole that is about 100,000 times as massive as the sun. This powerful core is surrounded by a dense, star-like cocoon of hydrogen that is roughly the size of the solar system.”
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Reposted by Matthew Selheimer
Paul Byrne @theplanetaryguy.com · 12/08/2026
This is a video of a solar eclipse TAKEN FROM THE SURFACE OF MARS
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Reposted by Matthew Selheimer
Andrew Curry @andrewcurry.com · 11/08/2026
The man's skeletal injuries looked like a train hit him, but he died in 1304 CE. At #ppa26Berlin last week, @uniofbradford.bsky.social scientist Jo Buckberry concluded he was likely whacked by a flying boulder, making him the first confirmed trebuchet death in the archaeological record. @science.org
science.org
Shattered skeleton in Scottish castle is first confirmed death from trebuchet
“Devastation” across body of 14th century warrior indicates horrific demise from flying boulder
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Reposted by Matthew Selheimer
Reuters @reuters.com · 05/08/2026
Ancient Roman firefighters' barracks may have been found near Colosseum reut.rs/4zhvZRl
reut.rs
Ancient Roman firefighters' barracks may have been found near Colosseum
Archaeologists have uncovered a second-century building with mosaics and frescoes near the Colosseum that may have been barracks used by ancient ​Roman firefighters, the city's archaeological office said on Wednesday.
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Matthew Selheimer @mselheimer.bsky.social · 06/07/2026
This England vs Mexico match is insane. Red card, penalty kick, another penalty kick. England still up 3-2 but playing a man down. Crazy. #worldcup
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Reposted by Matthew Selheimer
Nina Willburger @drnwillburger.bsky.social · 29/06/2026
For #MosaicMonday this fantastic photo of a mosaic (and a lovely fish 🐟) that was discovered in the submerged ruins of #Roman Baiae. 📷 Parco Archeologico Campi Flegrei
The photo was taken underwater. It shows a partially uncovered mosaic on the ground of the sea and a fish swimming above it
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Matthew Selheimer @mselheimer.bsky.social · 19/06/2026
I think this is an important learning from the Social Media era. We must not assume unfettered AI use will be benign nor those promoting it. This doesn’t mean I don’t see value in certain AI uses for commercial or educational purposes, but we must be more intentional. www.reuters.com/technology/n...
reuters.com
Norway imposes near ban on AI in elementary school
Norway is imposing a near ban on the use of generative AI tools by elementary school pupils while also restricting their ​use in the education of older children to prevent a ‌negative impact on learni...
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Matthew Selheimer @mselheimer.bsky.social · 02/06/2026
After some recent trips, I have now visited 41 countries (21% of all UN members) and 6 continents. I’m blessed that my roles in marketing and archaeology have enabled me to see so much of the world. But there is more yet to see!
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Matthew Selheimer @mselheimer.bsky.social · 31/05/2026
Beach vibe timeline cleanser. But flying back to reality today…
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Matthew Selheimer @mselheimer.bsky.social · 28/05/2026
Moesgaard museum near Aarhus, Denmark is impressive. Danish prehistory through the medieval period. Excellent use of modern visual displays and soundscapes. Highly recommended.
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Matthew Selheimer @mselheimer.bsky.social · 28/05/2026
Had a fantastic visit to Denmark for an archaeology conference last week.
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Matthew Selheimer @mselheimer.bsky.social · 28/05/2026
Current state of being - somewhere in the Caribbean.
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Reposted by Matthew Selheimer
Antiquity Journal @antiquity.ac.uk · 27/05/2026
#Roman wines were likely skin-contact wines, meaning the grape skins were left in during fermentation #NationalGrapeDay The yeasts on the grape skins were carefully controlled and imparted aromas of toasted bread, apples, roasted walnuts and curry (£) doi.org/10.15184/aqy... 🏺 #Archaeology
Diagram displaying how wine fermentation occurred in an egg-shaped Roman fermentation vessel, with grape solids accumulated at the bottom, a protective biofilm building on the surface and the convection of heat and yeast cells around the vessel.
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Matthew Selheimer @mselheimer.bsky.social · 15/05/2026
Good.
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Matthew Selheimer @mselheimer.bsky.social · 14/05/2026
I'm giving a virtual talk tomorrow (May 14th) on modeling neighborhoods in Pompeii and it's free to join! (17:00 BST, 12:00 EST, 9:00 PST) Sign up here: www.ticketsource.com/whats-on/onl...
ticketsource.com
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Matthew Selheimer @mselheimer.bsky.social · 05/05/2026
Intersections are where a lot of “action” takes place in cities. They are where people decide to proceed in the same direction, turn, or stop. Here we see features adjacent to a major crossroads in Pompeii: a public fountain in marble, a street shrine, a water tower, and a place for public assembly.
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Reposted by Matthew Selheimer
Nina Willburger @drnwillburger.bsky.social · 01/05/2026
A glimpse of everyday life in ancient #Greece: a terracotta figurine group depicting a barber cutting a man's hair. From Tanagra, Greece, dating early 5th century BC. On display at Altes Museum, Berlin 📷 me 🏺
A terracotta figurine of a standing man cutting the hair of another man who is seated in front of him, shown on display in a museum setting
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Matthew Selheimer @mselheimer.bsky.social · 25/04/2026
The Basilica of Pompeii, looking toward the tribunal, lit up at dusk.
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Matthew Selheimer @mselheimer.bsky.social · 25/04/2026
Hah.
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Matthew Selheimer @mselheimer.bsky.social · 12/04/2026
I know it’s ‘panem et circenses’ but I’m glad the NBA playoffs are here and baseball for a diversion with all else that’s going on in the world.
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Matthew Selheimer @mselheimer.bsky.social · 10/04/2026
“The cybersecurity industry is about to undergo a capability reset. Every company that builds or maintains software now faces an environment where AI can find bugs that 27 years of human review and 5 million automated scans missed.” www.forbes.com/sites/jonmar...
forbes.com
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Matthew Selheimer @mselheimer.bsky.social · 09/04/2026
Remember to stop and appreciate the flowers whenever you can. Life has plenty of weeds to distract you.
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Reposted by Matthew Selheimer
TechCrunch @techcrunch.com · 07/04/2026
A joint FBI, NSA and CISA advisory warns that Iranian hackers have 'escalated' their tactics in response to the ongoing U.S.-Israel war with Iran.
techcrunch.com
Iranian hackers are targeting American critical infrastructure, U.S. agencies warn | TechCrunch
A joint FBI, NSA and CISA advisory warns that Iranian hackers have 'escalated' their tactics in response to the ongoing U.S.-Israel war with Iran.
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Matthew Selheimer @mselheimer.bsky.social · 05/04/2026
Happy Easter!
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Matthew Selheimer @mselheimer.bsky.social · 05/04/2026
I honesty did not know that artichoke’s do this. Wow.
Photo of a blooming artichoke
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Reposted by Matthew Selheimer
Paul Byrne @theplanetaryguy.com · 03/04/2026
This image of home just came down from the Artemis II crew. Taken after their translunar injection burn, there are aurorae at top right and lower left, and zodiacal light at lower right. Credit: NASA/Reid Wiseman
That's home. That's us.
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Matthew Selheimer @mselheimer.bsky.social · 03/04/2026
I reflect on this essay at times to remind myself how writing is hard because it improves our thinking. “If writing down your ideas always makes them more precise and more complete, then no one who hasn't written about a topic has fully formed ideas about it.” paulgraham.com/words.html
paulgraham.com
Putting Ideas into Words
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Matthew Selheimer @mselheimer.bsky.social · 03/04/2026
Artemis II has now left Earth’s orbit, making this the first time in history that a woman and a person of color have left the Earth’s orbit. www.nasa.gov/missions/art...
nasa.gov
NASA: Artemis II
Artemis I will be the first in a series of increasingly complex missions to build a sustained human presence at the Moon for decades to come.
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Matthew Selheimer @mselheimer.bsky.social · 02/04/2026
No one can hear you scream in space…about Microsoft Outlook. Well, maybe some people can if you are an astronaut. www.wired.com/story/artemi...
wired.com
Even Artemis II Astronauts Have Microsoft Outlook Problems
The mission commander’s email inbox failed during the journey to the moon. Have they tried turning the computer off and back on again?
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Reposted by Matthew Selheimer
Wanted in Rome @wantedinrome.bsky.social · 26/03/2026
Rome's Ara Pacis reveals its true colours in a spectacular new immersive experience.
wantedinrome.com
Rome's Ara Pacis comes to life with new videomapping experience
Visitors to the Museo dell'Ara Pacis can enjoy L'Ara si rivela, a captivating immersive experience dedicated to one of Rome's most iconic ancient monuments.
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Matthew Selheimer @mselheimer.bsky.social · 20/03/2026
Monte Verde may not be pre-Clovis. www.science.org/content/arti...
science.org
Debate explodes over age of key South American archaeological site
New study argues Monte Verde is far younger than once thought, challenging when people arrived in the Americas
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Matthew Selheimer @mselheimer.bsky.social · 13/03/2026
Gas and utility prices are going up, grocery prices are still high, there’s an expanding war in The Middle East, but at least there are no new jobs. 2026 in a nutshell. Oof.
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Reposted by Matthew Selheimer
Eduardo Amorim @cegamorim.bsky.social · 13/03/2026
Dogs evolved to eat your leftovers! Comparing dog & wolf genomes revealed dogs have up to 30 EXTRA copies of the amylase gene (AMY2B) that helps digest starch. This is a key genomic signature of living alongside humans & table scraps for thousands of years 🐕 www.nature.com/articles/nat... #2026MMM
Adapted from Axelsson et al. 2013 Fig 2c: Histogram showing the distribution of diploid amylase copy number in wolf (n=35, blue) and dog (n=136, red). Dogs carry more copies of the starch-digesting gene AMY2B than wolves. Additional copies make dogs better than wolves at digesting starchy foods like grains & vegetables.
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Reposted by Matthew Selheimer
Bill Madden @maddenifico.bsky.social · 11/03/2026
No way! 😂🤣🔥🔥🔥👇
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Matthew Selheimer @mselheimer.bsky.social · 10/03/2026
You might say it’s the beginning of the end, or perhaps it’s the end of the beginning. Some things are still beginning, others are about to end. Of that I am mostly sure. For now. Ok, Let’s start over. Today’s no good. Tomorrow looks better. Yeah, that’s a good day. But not as good as yesterday.
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Reposted by Matthew Selheimer
Alison Fisk @alisonfisk.bsky.social · 07/03/2026
Sipping my coffee ☕️ and thinking about these marvellous Minoan cups! They look so modern it’s incredible to think they were made during the Bronze Age some 3,800 years ago! Heraklion Archaeological Museum, Crete. 📷 by me #Archaeology
My photo shows a museum display with colourful Minoan pottery cups arranged on three clear shelves, one above the other. These cups, known as Kamares Ware, are from Phaistos, Crete. They were made in palace workshops, c. 1800-1700 BC. The cups range in shape and size from conic and cylindrical cups (top and middle shelves) to hemispherical and carinated shaped cups (bottom shelf). They are decorated with multi-coloured geometric motifs; with spirals and swirls painted in red and white pigment on black.
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Reposted by Matthew Selheimer
The Register @theregister.com · 05/03/2026
FYI: UK Businesses told to brace cyber defenses amid Iran conflict risk
dlvr.it
UK Businesses told to brace cyber defenses amid Iran conflict risk
NCSC urges all to review posture as escalating tensions increase risk of indirect digital spillover The UK's cybersecurity agency is warning British organizations to brace for potential digital blowback as the Middle East conflict spills further into the online world.…
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Matthew Selheimer @mselheimer.bsky.social · 01/03/2026
Pompeii's Forum (southwest corner) looking through the double colonnade into the Basilica. Note the walking surface of the forum would have been covered entirely with large marble paving stones, while only some remain today. Also note the Doric first order and Ionic second order of the capitals.
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Reposted by Matthew Selheimer
Philadelphia Inquirer @inquirer.com · 28/02/2026
Considered cultural artifacts, the items were imported into the United States without proper permitting, and were likely the product of “illicit excavations of burial sites,” federal officials said.
inquirer.com
Bronze Age swords and arrowheads dating back almost 4,000 years are seized by CBP in Philly
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Matthew Selheimer @mselheimer.bsky.social · 25/02/2026
Wise words.
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Reposted by Matthew Selheimer
Archaeological Institute of America @archaeological.org · 24/02/2026
There's still time to register for tomorrow's Archaeology Hour lecture at 8pm ET! Join the AIA for a virtual trip to West Africa as Akin Ogundiran delivers "Metropolitan Walls of the Ọyọ Empire." 📅 Feb 25, 2026 I 8pm ET Register & get the recording: us02web.zoom.us/webinar/regi...
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Matthew Selheimer @mselheimer.bsky.social · 19/02/2026
Many people don't know about Ostia Antica, ancient Rome's port city - close to Fiumicino airport and 30-minute ride from the city center. The excavated area as large as Pompeii, beach clubs nearby for lunch, a swim, and sunset view over the Tyrrhenian Sea. Makes for a lovely day if you are in Rome.
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Matthew Selheimer @mselheimer.bsky.social · 18/02/2026
Whenever I worry about the negative effects of AI and how those could grow, I think about the fact that auto-correct still can't figure out what I'm trying to type a lot of the time and both ChatGPT and Copilot regularly hallucinate on stuff you'd think they shouldn't...and then I get more worried.
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