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Posts by Caley Orr

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What Physical ‘Life Force’ Turns Biology’s Wheels? | Quanta Magazine The bacterial flagellar motor is finally understood after 50 years. In its workings, columnist Natalie Wolchover finds the essence of life.
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No evidence that hominin dispersal across Eurasia was part of a wider turnover in mammal distributions - Nature Communications Hominin dispersal out of Africa may have corresponded with exchanges of other fauna out of Africa. Here, the authors examine taxonomic and functional similarities in Eurasian and African fossil commun...

No evidence that hominin dispersal across Eurasia was part of a wider turnover in mammal distributions

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Pepper
Pepper YouTube video by S.G. Goodman - Topic

Wow. This is an amazing cover of Butthole Surfers' song "Pepper."

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Minneapolis rooftop on infamous album from The Replacements
Minneapolis rooftop on infamous album from The Replacements YouTube video by FOX 9 Minneapolis-St. Paul
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Massive Ancient-DNA Study Reveals Natural Selection Has Accelerated in Recent Human Evolution Hundreds of genes selected in West Eurasia since farming began, many linked to health

hms.harvard.edu/news/massive...

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Revolution, modernity, and the dispersal of Homo sapiens beyond Africa In the recent past, evolutionarily speaking, every other kind of hominin, from the Neanderthals of western Eurasia to the ‘hobbits’ of Flores, became …

New paper alert. My new article just published in Quaternary Science Reviews, "Revolution, modernity, and the dispersal of Homo sapiens beyond Africa". www.sciencedirect.com/science/arti...

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The Tool Systems Approach: Measuring Complexity in the Primatological, Archaeological, and Ethnographic Records - Journal of Archaeological Method and Theory Measuring technological complexity across species, as well as across temporal and spatial scales, is an ongoing challenge among authors who work on primatological, archaeological, and/or ethnographic ...

Our new paper exploring the measurement of complexity in tools - the result of significant and ongoing work, including that which emerged from our Complexity in Lithics Conference!
link.springer.com/article/10.1...

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Ancient Landscape Reveals Bones of Humans Who Lived 100,000 Years Ago A monumental archaeological excavation in Africa has uncovered the lives of the humans who lived there 100,000 years ago.

Finds from the Halibee site in the Middle Awash, Ethiopia including stone tools and human remains.

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Embryo fossil found in South Africa is world’s oldest proof that mammal ancestors laid eggs A detailed scan of a fossil therapsid embryo reveals the oldest egg belonging to a mammalian ancestor.
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A massive once-in-500-years chimpanzee civil war has broken out

A massive once-in-500-years chimpanzee civil war has broken out

A massive once-in-500-years chimpanzee civil war has broken out (link fixed!) 🦧
@gutsickgibbon.bsky.social
#evolution #evolutionsoup #fossil #science #chimps
👇🏼👇🏾
is.gd/uheC0U

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The origins and development of mobile containers: Biocultural perspectives on Pleistocene containment Containers are ubiquitous and universal across all present-day societies. The substantial increase in the quantity and diversity of containers in the …

Awhile back I meet the brilliant Jenni French & and now been lucky to collab on a project w/ her for the last ~3 yrs. Along with Somaye Khaksar & @anthrofuentes.bsky.social our 1st project paper is out, on origins & development of mobile containers (1/n) 🧪 🧺
www.sciencedirect.com/science/arti...

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Yeah, I need to check this out. Sounds amazing. That's a lot of live music that guy experienced. He must have been out every night of his life.

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Volunteers turn a fan’s recordings of 10,000 concerts into an online treasure trove A group is methodically researching, cataloging and digitizing the recordings one by one.
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Specialised and persistent raw material procurement by humans in the Middle Pleistocene - Nature Communications The authors here demonstrate that hominins were consistently and specifically procuring a single kind of raw material to make stone tools at the South African site of Jojosi between 220 and 110 thousa...

🚨 Publication alert🚨 Early humans in South Africa were quarrying stone as long as 220,000 years ago at the site of Jojosi @natcomms.nature.com - specialized, long-term use of a source of a raw material source in Stone Age Africa: Read the paper #openaccess here www.nature.com/articles/s41...

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Figure 2 from Monson et al (2026). Figure 2. Allometric scaling of endocranial volume and body mass in extant primates and Plio-Pleistocene hominids. 

The figure displays a bivariate plot with two regression slopes through known fossil hominin species and the extant apes. It shows that the early hominin species Ardipithecus ramidus and Australopithecus anamensis may have had a relationship between body mass and endocranial volume (a proxy for brain size) more similar to extant apes with relatively small brains. In contrast, hominins after 3 million years ago show larger endocranial volumes relative to their inferred body mass.

Figure 2 from Monson et al (2026). Figure 2. Allometric scaling of endocranial volume and body mass in extant primates and Plio-Pleistocene hominids. The figure displays a bivariate plot with two regression slopes through known fossil hominin species and the extant apes. It shows that the early hominin species Ardipithecus ramidus and Australopithecus anamensis may have had a relationship between body mass and endocranial volume (a proxy for brain size) more similar to extant apes with relatively small brains. In contrast, hominins after 3 million years ago show larger endocranial volumes relative to their inferred body mass.

The Evolution of Brain and Body Size in Genus Homo.
TA Monson, AP Weitz, & MF Brasil.
doi.org/10.3390/huma...
"Both small-bodied Homo floresiensis and Homo naledi have endocranial volumes (ECVs) that are consistent with their body size given the scaling relationship that characterizes genus Homo."

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Evolution of the Human Life Cycle, Revisited Click on the article title to read more.
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'Major disruption in Neanderthal history': 65,000 years ago, all Neanderthals in Europe died out except for one lineage The last Neanderthals to survive in Europe came from a single lineage that survived the worst period of the ice age, ancient DNA reveals.
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Diagram of shoulder anatomy, but both the anatomy and the labels are wrong and very obviously AI-generated.

Diagram of shoulder anatomy, but both the anatomy and the labels are wrong and very obviously AI-generated.

There are so many no-good, terribly bad, wrong, AI-generated anatomical diagrams out there. Here's one I found on the website of an actual clinic in Minnesota. Yikes. Be careful out there.

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Faunal exploitation at the elephant hunting site of Lehringen, Germany, 125,000 years ago - Scientific Reports Scientific Reports - Faunal exploitation at the elephant hunting site of Lehringen, Germany, 125,000 years ago

Evidence of a successful elephant hunt by Neanderthals.

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World’s Largest Punk Record Collection Finds New Home at MTSU MURFREESBORO, Tenn. — The world’s largest collection of punk records has officially arrived at Middle Tennessee State University, marking the beginning of a major archival project at the u...
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Palates of Homo sapiens (left) & Paranthropus boisei (right) - Des Bartlett/ Photo Researchers

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The Replacements - When It Began (Video)
The Replacements - When It Began (Video) YouTube video by The Replacements
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Phylogenetic tree showing the evolutionary relationships of living and fossil apes including the newly described fossil Masripithecus moghraensis.

Phylogenetic tree showing the evolutionary relationships of living and fossil apes including the newly described fossil Masripithecus moghraensis.

A phylogenetic tree? There's not one in this news piece, but the formal paper in Science has one.
doi.org/10.1126/scie...

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Masripithecus: A new Miocene ape from Egypt sheds light on the origins of modern apes In a study published in Science, an international research team from the Mansoura University Vertebrate Paleontology Center (Egypt) and the University of Southern California (U.S.) describe Masripithe...
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This tracks--I've always actively avoided poshness!

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If we value logic and rigor in our language, then I hope we can influence an evolution back to that as the convention--at least in formal settings, as obviously I ain't that formal on bsky.

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I don't know who needs to hear this (besides a lot of humans writing stuff), but logically speaking, something can't be "very unique" or "not very unique" or "highly unique" or "exceptionally unique" or "somewhat unique." Uniqueness indicates singularity. Something is unique or it ain't.

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16 Horsepower - Black Soul Choir
16 Horsepower - Black Soul Choir YouTube video by 16HorsepowerVEVO

Of the Denver bands over the years that have had some national notoriety, 16 Horsepower is probably my favorite.

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Rocky Mountain Low - The Colorado Musical Underground of the Late 1970s
Rocky Mountain Low - The Colorado Musical Underground of the Late 1970s YouTube video by HFC Señal Pirata

Early punk, new wave, and power pop from Colo-rady including Jello Biafra's first band (Healers).

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It's 'Blizzard Week' in Colorado More blizzards hit Colorado between March 12 and March 18 than any other week, and there have been some big ones in recent years.

Snowy and 30F here in Denver today but looking to hit 70-80s (21-27C) by the time of #AABA2026. All the same, Colorado says "pack layers."

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