Bluesky now platform of choice for science community https://arstechni.ca/5aBQ #Sciencecommunication #scienceoutreach #socialmedia #Science #bluesky #Twitter

Bluesky now platform of choice for science community https://arstechni.ca/5aBQ #Sciencecommunication #scienceoutreach #socialmedia #Science #bluesky #Twitter
Might I suggest that you support Skype a Scientist during their fundraiser?
Scientists are the most trusted source of climate info in the Global South, says a new survey. Trust in media & governments lags behind, highlighting the need for clear, science-based communication.
https://www.carbonbrief.org/scientists-are-most-trusted-source-of-climate-information-in-global-south-survey/?utm_source=mastodon&utm_medium=social&utm_campaign=fedica-Autoposting
#ClimateTrust #GlobalSouth #ScienceCommunication #ClimateAction
Dr Alina Chan spoke at the USF Covid Conversations conference about the origins of Covid-19. Alina is the author of “Viral: the Search for the Origins of Covid-19” and her book is a deep dive into the source of the virus.
Hear more from Alina and other Covid Conversations speakers on the latest episode of Big Biology: https://bigbiology.substack.com/p/covid-conversations-ep-138?r=b2j9a&triedRedirect=true
I thought this #Guardian / #WaPo piece by some Peter Brennan might be worth a glance, though expecting only 60% stuff everyone knows (or should know), and 40% tedious irrelevant human interest guff. Which just proves that you can never set one's expectations low enough.
Well, I made it as far as the fourth sentence before deciding I'd be better off slamming my genitals in the fridge door.
"Seeing as it’s all carbon-based life here on Earth, these extreme disruptions to the carbon cycle express themselves as, and are better known as, “mass extinctions”.
/o\
*thud, *thud, *thud goes head on desk.
I fucking despair sometimes, I really do. How is it that clueless fuckwits get paid good money to generate such atrocious rubbish?
The road to scientific discoveries is often long and full of unexpected twists and turns. Dr. Beth Stroupe shared her career path and her recent breakthrough in the lab that was decades in the making. She's been working to identify the structure of an enzyme called sulfite reductase that has broad biological importance, from amino acid metabolism to a potential target for drug discovery. Learn more about Beth's research, her experiences in science, and her life in this new podcast episode!
https://www.peoplebehindthescience.com/dr-beth-stroupe/
This episode was made possible with support from Innovative Research.
@luckytran I often explain it as “Forest fires don’t mask, but your mask still protects your lungs from the smoke. Its the same with viruses; your mask will still greatly protect you.”
#SciComm #ScienceCommunication
Our newest #ScienceCommunication editorial covers a remarkable dinosaur specimen; but one that also has a troubled history in smuggling & private collections.
Read the editorial here: https://doi.org/10.1080/08912963.2025.2545090
Read the original paper: https://doi.org/10.1080/08912963.2025.2530148
@dantheclamman I hope you answered with something to the effect of "you know what? we don't know! maybe *you* will be the one who finds out!"
Amazing #ScienceCommunication. Just wow.
Steve Mould je zase skvelý!
Jediný problém je, že teraz sa mi chce v garáži merať gravitačnú konštantu týmto klasickým experimentom, miesto toho, aby som robil niečo užitočné :)
Whispers on Stone: Why Paleolithic Rock Art Still Speaks to Us Today
(And why I’m moving halfway across the world to listen)
In the Glow of Firelight
Night in the Paleolithic. Firelight flickers along the limestone walls of a shelter, casting movement across the contours of a horse etched in stone, its musculature defined by the shifting interplay of shadow and flame. Beside it, an aurochs emerges, its horn arcing like a crescent moon across the rock face. These are not merely pictures — they are echoes. Echoes of the earliest human voices, carved into stone, suspended in time yet pulsing with presence.
Soon, I’ll be in Portugal’s Côa Valley, where these voices still speak. I’m not going to analyze them from behind glass — I’m going to listen. To stand among the engravings not as a distant observer, but as a human being among ancestors.
Photo by Stijn Nuttin on Pexels.com1. The Meaning Behind the Marks
Paleolithic rock art represents one of the earliest and most profound expressions of symbolic thought — a leap in human cognition. With engraved ochre from South Africa’s Blombos Cave dating back over 70,000 years (Henshilwood et al., 2002), we know that abstract expression emerged long before the rise of cities, agriculture, or writing.
These are not decorative flourishes. They are tools of memory, myth, and meaning. They express a need to communicate not only information but emotion, connection, and transformation. The subjects — animals, births, shamanic figures — appear across continents, hinting at a shared symbolic heritage stretching deep into our past.
For me, as someone rooted in anthropology, humanism, Stoic practice, and Nordic animism, these works are not static. They are alive — like songs or rituals — recalled, repeated, and reinterpreted. In an animistic worldview, these are not merely depictions of animals; they are animals. Beings. Spirits. Ancestors. Teachers.
This isn’t a metaphor. It’s a relationship — and one we are called to reawaken.
2. Why Portugal Matters
Portugal is home to one of the richest yet least globally recognized concentrations of Paleolithic rock art. The Côa Valley Archaeological Park contains over a thousand open-air engraved panels dating to the Upper Paleolithic. Unlike the cave paintings of Lascaux or Chauvet, these works are exposed to sun, wind, and rain — and still endure.
The Iberian Peninsula served as a glacial refugium during the Last Glacial Maximum (Carvalho, 2010), making it a stronghold for both human populations and artistic traditions. This continuity created a remarkably layered archive of expression.
Portuguese engravings differ in form and technique. They are etched, pecked, or abraded — their visibility shaped by natural light, weather, and time of day. Panels from sites like Mazouco and Fariseu often show overlapping generations of carvings, creating palimpsests that reflect a dialogue across centuries. The art isn’t only about what was carved — it’s about where, when, and how it was meant to be experienced.
In Côa, the land remembers.
Photo by Symeon Ekizoglou on Pexels.com3. My Path to Deep History
I grew up in California, captivated not by the landscapes around me, but by what lay across the Atlantic — the caves and shelters of Europe adorned with ancient marks. My first experiences with rock art were through books and digital reconstructions of sites like Chauvet and Altamira. Over time, I also gained exposure to Native American petroglyphs, developing a respectful and ongoing appreciation for their cultural significance.
Today, I’m pursuing my degree in anthropology at Arizona State University’s online program, with a focus on human origins and cognition. This academic path is deeply intertwined with personal philosophies — Stoic resilience, animistic reverence, and a humanistic commitment to empathy and understanding.
For me, studying Paleolithic art is not just academic. It’s personal. These marks challenge how I see the human story — not as a linear march of progress, but as a branching, spiraling chorus of memory, meaning, and imagination.
Moving to Portugal is a commitment. It’s a pilgrimage to the places where the first artists spoke, not in words, but in form and gesture. I want to be there — to learn not just with my mind, but with my whole being.
4. New Tools for Old Stories
The study of rock art has evolved beyond field sketches and measuring tapes. We now use digital tools and interdisciplinary techniques to uncover layers once invisible:
These technologies are not replacements for wonder — they are tools for amplifying it. They let us see what previous generations could only guess, and connect sites across time and space in new ways.
5. Why This Still Matters
We live in an era of distraction, where meaning is often commodified or fleeting. Paleolithic art reminds us of something deeper: that the urge to create, to symbolize, to remember, is foundational to being human.
These engravings are not idle doodles. They are necessities. They anchored social bonds, encoded cosmologies, trained memory, and marked place. They testify that survival alone is not enough — we need connection, story, and a sense of the sacred.
In our own time of ecological and existential crisis, these ancient marks offer a mirror. They invite us to slow down, observe, and listen. They show us that humanity has always sought to navigate uncertainty through imagination and shared symbols.
Interpretation requires humility. As Conkey (1997) reminds us, we may never truly know the minds behind these images. But listening itself is an act of reverence.
Listening to the Stones
When I arrive in Portugal, I won’t walk into a sterile lab or academic echo chamber. I’ll step into a valley sculpted by wind and river, by time and memory. I’ll stand where ancient artists once stood, tracing forms they carved by firelight.
They did not carve for us. But they carved with the hope, perhaps, that someone would follow. That someone would see. That someone would remember.
So that is what I intend to do: not to speak for them, but to listen.
ScreenshotReferences
Aubry, T., & Sampaio, J. D. (2008). Antiquity, 82(315), 1024–1037. https://doi.org/10.1017/S0003598X00097802
Carvalho, A. F. (2010). Quaternary International, 223–224, 254–272. https://doi.org/10.1016/j.quaint.2010.02.011
Conkey, M. W. (1997). In L. Hager (Ed.), Women in Human Evolution (pp. 172–207). Routledge.
Domingo, I., Villaverde, V., López-Montalvo, E., de la Cruz, M., & Martínez-Vidal, A. (2015). Journal of Archaeological Science, 55, 53–63. https://doi.org/10.1016/j.jas.2014.12.010
Henshilwood, C. S., d’Errico, F., Yates, R., Jacobs, Z., Tribolo, C., Duller, G. A. T., Mercier, N., Sealy, J. C., Valladas, H., Watts, I., & Wintle, A. G. (2002). Science, 295(5558), 1278–1280. https://doi.org/10.1126/science.1067575
Lewis-Williams, D. (2002). The Mind in the Cave: Consciousness and the Origins of Art. Thames & Hudson.
I spoke with journalist Johannes Jolmes for the ARD news magazine #KLAR about how the pandemic changed our social ties.
Our #LoneCovid study shows: Conflicts over #COVID19 tore friendships and family bonds apart — and many haven’t healed.
Episode “Hat Corona uns zerrissen?” now online:
YouTube: https://youtu.be/p57cC4vR09E
ARD Mediathek: https://ardmediathek.de/video/Y3JpZDovL25kci5kZS9wcm9wbGFuXzE5NjM2NzQwNl9nYW56ZVNlbmR1bmc
#SocialScience #ScienceCommunication #Surveys #SocialRelationships #Research #ARD
What can #mathematics teach us about #machinelearning?
Martin Burger @DESY shares why the Conference on Mathematics of Machine Learning 2025 brings together theory & practice to explore how math can help explain, guide & improve ML systems.
Read the interview https://bit.ly/Interview-Martin-Burger
@association @tuhamburg @tuberlin @maxplanckpress @dfg_public @secai @EUCommission @ERC_Research
Get to Know: JP Flores
Episode available now! Listen at the link in our bio.
@arstechnica
Hey #BethMole, you're a good science reporter. And as far as I can tell the article is #FreeOfAI.
Just so good compared to so much #ScienceCommunication.
#GoodJournalism
I really enjoy a lot of certain creators' videos on #YouTube but I'm not one to randomly share them often on here, but this one by Angela Collier is extra special. Vibe Physics is bad.
https://www.youtube.com/watch?v=TMoz3gSXBcY
#vibeCoding #vibePhysics #physics #science #scienceCommunication #education #LLM
Today's the day! My new hypothesis revealing the biological adaptation connecting regressive autism to genius and everything in between.
DOI: 10.32388/s5nhh0
#Neurodiversity
#AutismSpectrum
#RegressiveAutism
#AutismResearch
#Neuroscience
#CognitiveScience
#BrainDevelopment
#ScienceCommunication
#ResearchMatters
#BiologicalAdaptation
#ConnectingTheDots
#CreativeMinds
#GiftedAndAutistic
#HiddenPotential
The Echo of a Hand Across Millennia: Decoding the Cave Hand Stencil
Introduction
Imagine the dim glow of flickering firelight, casting dancing shadows on rough cave walls, thousands of years before history began. In the silence, broken only by the gentle breath of a painter, a hand presses against the cool, damp stone. A cloud of red ochre pigment fills the air, settling around the hand to leave a lasting imprint. This humble act resonates through time, speaking volumes across countless generations. The hand stencil, a ghostly echo from our distant ancestors, represents humanity’s earliest attempt at permanence—a poignant declaration: I was here. These timeless marks, etched in caves worldwide, whisper of identity, presence, and belonging, inviting us to imagine the lives, dreams, and stories of those who came before.
Creation and Technique
Creating a hand stencil required careful preparation and delicate execution. Artists mixed powdered ochre or manganese with binding agents such as animal fats or saliva, creating a vivid, lasting pigment. Hollow bone tubes, reeds, or even direct blowing through pursed lips were used to spray this mixture onto cave surfaces, leaving negative hand impressions as the pigment settled around the outstretched fingers and palm (Pike et al., 2012). Positive stencils, conversely, involved coating the hand directly with pigment and pressing firmly onto the rock. The skill and care in producing these artworks suggest the artists were respected community members entrusted with preserving their group’s identity.
Geographical Distribution
The universality of hand stencils spans continents and millennia, connecting disparate groups through a shared expression of humanity: – El Castillo Cave, Spain (approximately 40,800 years old), where stencils offer a vivid glimpse into the artistic traditions of Europe’s earliest inhabitants (Pike et al., 2012). – Leang Timpuseng Cave, Indonesia (around 39,900 years old), highlighting the global reach of this simple yet profound gesture (Aubert et al., 2014). – Cueva de las Manos, Argentina (circa 11,000 to 7,500 BCE), bearing witness to the enduring legacy of hunter-gatherer communities (UNESCO, 1999). – Maltravieso Cave, Spain (66,700 years old, Neanderthal), pushing back the boundaries of our understanding of human creativity and symbolism (Hoffmann et al., 2018).
Anthropological and Cognitive Significance
Hand stencils offer anthropologists a rare glimpse into the minds of early humans, revealing their cognitive sophistication and symbolic capabilities. Jean Clottes (2016) interprets these markings as powerful symbolic dialogues, possibly connecting humans with spiritual worlds or ancestors. Such interpretations illuminate the complex, multi-layered meanings embedded in these ancient symbols, suggesting hand stencils were not mere decorations but deeply intentional expressions of identity, spirituality, and community bonds.
Makers of the Marks
The diversity among hand stencil creators adds depth to our understanding of prehistoric societies. Morphometric studies indicate that women and children were significant contributors, evident from the varying sizes and proportions of handprints in sites like Pech Merle and Rouffignac Cave, France (Van Gelder & Sharpe, 2009). Indeed, roughly one-quarter of known stencils were crafted by young hands, suggesting these caves were inclusive spaces of communal gathering, learning, and cultural transmission (Guthrie, 2005). The presence of young artists underscores the social nature of cave art, where cultural heritage and knowledge passed seamlessly across generations.
Symbolic Meanings
Hand stencils often carry deeper symbolic meanings, frequently depicted with intentional missing fingers, possibly signifying complex communication methods, ritualistic practices, or symbolic gestures of sacrifice and belonging (Snow, 2006). At Gargas Cave, the repeated appearance of such stencils implies deliberate artistic choice rather than accidental loss or injury, hinting at a sophisticated form of proto-communication or ritual symbolism (Groenen, 2016). These enigmatic symbols provoke endless curiosity and interpretation, inviting us to explore ancient societies’ profound yet mysterious belief systems.
Neanderthal Artists
The revelation of Neanderthal-created hand stencils at Maltravieso Cave drastically reshapes our understanding of these ancient relatives. Dating to approximately 66,700 years ago, these artworks predate modern human presence in Europe, demonstrating Neanderthals’ capability for abstract thought, artistic expression, and symbolic communication (Hoffmann et al., 2018). This discovery challenges long-standing stereotypes, positioning Neanderthals as sophisticated beings with complex social structures, rituals, and creative traditions—indelibly marking their legacy within humanity’s shared heritage.
Personal Reflection and Modern Resonance
Handprints transcend historical and cultural divides, resonating deeply within modern consciousness through their universal symbolism of identity and continuity. Today, a child’s handprint evokes a profound emotional connection, bridging the vast temporal gap between ourselves and our ancestors. As parents guide their children’s hands onto clay or paper, they unknowingly echo the same intimate gesture practiced thousands of years earlier in shadowy caves. This continuity reflects humanity’s enduring quest for meaning, connection, and permanence, uniting generations through shared gestures of presence and belonging.
Conclusion
Hand stencils serve as timeless symbols of humanity’s deepest needs: recognition, belonging, storytelling, and community. These simple marks assert presence, convey complex meanings beyond language, and profoundly connect us to our earliest ancestors. They invite modern observers to reflect on our shared humanity and the eternal impulse to leave a mark upon the world, asserting with silent dignity: We are here.
Works Cited
Aubert, M., Lebe, R., Oktaviana, A. A., Tang, M., Burhan, B., Jusdi, A., … & Brumm, A. (2019). Earliest hunting scene in prehistoric art. Nature, 576(7787), 442–445. https://doi.org/10.1038/s41586-019-1806-y
Aubert, M., Pike, A. W. G., & Stringer, C. (2014). Pleistocene cave art from Sulawesi, Indonesia. Nature, 514(7521), 223–227. https://doi.org/10.1038/nature13422
Bednarik, R. G. (2008). Children as Pleistocene artists. Rock Art Research, 25(2), 173–182. https://www.academia.edu/1443733/Children_as_Pleistocene_artists
Clottes, J. (2016). What is Paleolithic Art? (D. Coltman, Trans.). University of Chicago Press.
D’Errico, F., & Vanhaeren, M. (2017). Hand to mouth: The origins of symbolic behaviour seen through the study of dental wear and artefacts. Philosophical Transactions of the Royal Society B: Biological Sciences, 372(1725), 20160377. https://doi.org/10.1098/rstb.2016.0377
Groenen, M. (2016). Handprints and fingerprints in rock art. Arts, 5(1), 1–12. https://doi.org/10.3390/arts5010007
Guthrie, R. D. (2005). The Nature of Paleolithic Art. University of Chicago Press.
Hoffmann, D. L., Standish, C. D., García-Diez, M., Pettitt, P. B., Milton, J. A., Zilhão, J., … & Pike, A. W. G. (2018). U-Th dating of carbonate crusts reveals Neanderthal origin of Iberian cave art. Science, 359(6378), 912–915. https://doi.org/10.1126/science.aap7778
Pike, A. W. G., Hoffmann, D. L., García-Diez, M., Pettitt, P. B., Alcolea, J., De Balbín, R., … & Zilhão, J. (2012). U-series dating of Paleolithic art in 11 caves in Spain. Science, 336(6087), 1409–1413. https://doi.org/10.1126/science.1219957
Snow, D. R. (2006). Sexual dimorphism in European Upper Paleolithic cave art. American Antiquity, 71(4), 663–678. https://doi.org/10.1017/s0002731600039840
UNESCO World Heritage Centre. (1999). Cueva de las Manos, Río Pinturas. https://whc.unesco.org/en/list/936
Van Gelder, L., & Sharpe, K. (2009). Women and girls as Upper Paleolithic cave “artists”: Deciphering the sexes of the hands at Rouffignac Cave, France. Oxford Journal of Archaeology, 28(4), 323–333. https://doi.org/10.1111/j.1468-0092.2009.00332.x
Wreschner, E. E. (1983). Red ochre and human evolution: A case for discussion. Current Anthropology, 24(5), 605–625. https://doi.org/10.1086/203067
Zilhão, J., Angelucci, D. E., Badal-García, E., d’Errico, F., Daniel, F., Dayet, L., … & Higham, T. (2010). Symbolic use of marine shells and mineral pigments by Iberian Neandertals. Proceedings of the National Academy of Sciences, 107(3), 1023–1028. https://doi.org/10.1073/pnas.0914088107
Zilhão, J., & d’Errico, F. (1999). The chronology and taphonomy of the earliest Aurignacian and its implications for the understanding of Neandertal extinction. Journal of World Prehistory, 13(1), 1–68. https://doi.org/10.1023/A:1022348410845
Application deadline extended!
Apply to become an Open Science trainer in Aachen-now until 25 July!
Want to share your knowledge & grow your skills in open, collaborative research? This is your chance!
For researchers, trainers & support staff
Learn how to teach Open Science
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Apply here: https://events.digital-research.academy/event/101/