A quotation from Marcus Aurelius
Constantly observe everything coming into being through change, and accustom yourself to the thought that universal nature loves nothing so much as to change the things that are and to create new things in their likeness. For everything that exists is, in a sense, the seed of what will arise from it.
[Θεώρει διηνεκῶς πάντα κατὰ μεταβολὴν γινόμενα καὶ ἐθίζου ἐννοεῖν, ὅτι οὐδὲν οὕτως φιλεῖ ἡ τῶν ὅλων φύσις ὡς τὸ τὰ ὄντα μεταβάλλειν καὶ ποιεῖν νέα ὅμοια. σπέρμα γὰρ τρόπον τινὰ πᾶν τὸ ὃν τοῦ ἐξ αὐτοῦ ἐσομένου.]
Marcus Aurelius (AD 121-180) Roman emperor (161-180), Stoic philosopher
Meditations [To Himself; Τὰ εἰς ἑαυτόν], Book 4, ch. 36 (4.36) (AD 161-180) [tr. Hard (2011 ed.)]
Sourcing, notes, alternate translations: wist.info/marcus-aureleus/2668…
How nature makes a complex brain — and why humans may not be so special after all.
@npr reports: "A recent series of studies suggests that the brains of birds, reptiles and mammals all evolved independently — even though they share a common ancestor."
Danke, @thorsten4future
Dass auf meinem #Blog und hier auf #Mastodon sowie auf #BlumeundInce immer wieder Dialoge über #Medien & #Medienethik gelingen, bedeutet mir sehr viel! Lange kam ich mir mit den Themen von #Verschwörungsmythen über #Evolution der #Religion bis #Solarpunk eher wie ein isolierter Nerd vor. Doch das ändert sich, jeden Tag ein Stück. Interesse & #Wissen wachsen v.a. via #Fediversum.
15-Apr-2025
A tale of two hummingbird bills
There are two species of streamertail #hummingbirds on the island of #Jamaica, #WestIndies—one with red-billed males (Trochilus polytmus) and the other with black-billed males (T. scitulus). This is a puzzling situation, as many evolutionary biologists have argued that avian #speciation is unlikely to occur on small oceanic #islands.
“It may be difficult, but we ought to admire the savage instinctive hatred of the queen-bee, which urges her to destroy the young queens, her daughters, as soon as they are born, or to perish herself in the combat; for undoubtedly this is for the good of the community; and maternal love or maternal hatred, though the latter fortunately is most rare, is all the same to the inexorable principles of natural selection.”
"If we admire the truly wonderful power of scent by which the males of many insects find their females..."
How does Darwin even know this? Were there earlier naturalists who established it? What experiments?
16-Apr-2025
For a while, #crocodile
The ancestors of today’s #crocodylians survived two #massExtinction events. A new study uncovered a secret to their longevity, which could help conservationists better protect our planet’s most vulnerable species
https://www.eurekalert.org/news-releases/1080222 #science #ecology #evolution #conservation
Queen–worker differences are linked to gene duplication and differential gene expression, in particular in reproductive tissues. Study by Xu & Colgan sheds light on how social insects resolve genomic conflict to produce distinct castes.
A very good discussion with Cecilia Padilla-Iglesias and Karen Kramer on the #huntergatherer sexual division of labour debates, and why we impose our ideas about status for women. Do you imagine women need to hunt to have power?...because the Hadza wouldn't think so.
Lese gerade in der StZ, S. 6, über eine Familie aus #Spaichingen, die der extrem dualistischen Sekte der „Palmarianisch-katholischen Kirche“ angehöre. Sie betrachten die Teilnahme von Kindern am #Schwimmunterricht wegen der „unzüchtigen“ #Kleidung als „Todsünde“.
Und zur #Religionsdemografie, an dessen Verstehen Säkulare leider oft scheitern: Das neunte Kind sei unterwegs… #Religion #Evolution #Demografie #Christentum #Dualismus #Palmarianer #PalmardeTroya https://scilogs.spektrum.de/natur-des-glaubens/was-darwin-ueber-die-evolution-der-religion-schrieb-meine-erste-radioproduktion-beim-deutschlandfunk/
The Evolution of Biological Information: How Evolution Creates Complexity, From Viruses to Brains by Christoph Adams, 2024
Why information is the unifying principle that allows us to understand the evolution of complexity in nature. More than 150 years after Darwin’s revolutionary On the Origin of Species, we are still attempting to understand and explain the amazing complexity of life.
@bookstodon
#books
#nonfiction
#biology
#evolution
#information
#complexity
Bacterial operons may persist in eukaryotes (e.g. fungi) after horizontal gene transfer, according to Kogay et al. Operon-derived gene pairs suggest initial neutral retention and later functional integration or degeneration.
Coppage et al. identify four ancient polyploidy events with unusually high duplicate gene retention. Elevated gene conversion and delayed diploidization suggest a distinct class of paleopolyploid genomes.
"Thus, calls for extending evolutionary theory or completely replacing it fall flat – no novel mechanisms of evolution have yet been discovered in almost 100 years."
https://aeon.co/essays/a-resurrected-defence-of-beanbag-genetics
Comparative transcriptomics of nematodes C. elegans and Brugia malayi supports Ohno’s hypothesis of X-linked genes showing upregulation following Y degeneration, which depends on the dosage-sensitive gene content of proto-X.
Uncovering The Genomic Secrets Of Color Variants In Female Cuckoo Birds
"Why do female common cuckoos have one of two different colors, whilst the males are all the same color?"
by @grrlscientist via #Substack
#birds #ornithology #color #evolution #SciComm https://grrlscientist.substack.com/p/uncovering-the-genomic-secrets-of
Why Everything in the Universe Turns More Complex | Quanta Magazine
https://www.quantamagazine.org/why-everything-in-the-universe-turns-more-complex-20250402
https://news.ycombinator.com/item?id=43677232
Crows can recognize geometric regularity
https://phys.org/news/2025-04-crows-geometric-regularity.html
Uncovering The Genomic Secrets Of Color Variants In Female Cuckoo Birds
"Why do female common cuckoos have one of two different colors, whilst the males are all the same color?"
by @GrrlScientist via #Substack
#birds #ornithology #color #evolution #SciComm https://grrlscientist.substack.com/p/uncovering-the-genomic-secrets-of