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How to measure the Earth

"The first known calculation of the Earth’s circumference was made 2300 years ago by a man called Eratosthenes. I remember in school, how impressed I was by how accurately the Earth’s circumference was measured such long time ago. Today we’re going to take a closer look on how his calculation was made."

blog.datawrapper.de/earth-circ

@histodon @histodons

Glimpse of next-generation internet

"The Harvard team established the practical makings of the first quantum internet by entangling two quantum memory nodes separated by optical fiber link deployed over a roughly 22-mile loop through Cambridge, Somerville, Watertown, and Boston."

news.harvard.edu/gazette/story

@science

Backstabbing, bluffing and playing dead: has AI learned to deceive? – podcast

"Dr Peter Park, an AI existential safety researcher at MIT and author of the research, tells Ian Sample about the different examples of deception he uncovered, and why they will be so difficult to tackle as long as AI remains a black box."

theguardian.com/science/audio/

@science

attribution: Orion 8, Public domain, via Wikimedia Commons. Page URL: commons.wikimedia.org/wiki/Fil

[_Not an entirely absurd proposition_]

‘Treat food companies like cigarette companies who are trying to get us addicted’

"Ultra-processed foods are designed to make us overeat and are causing both the obesity and mental health crises in the UK, says scientist and author Tim Spector."

length: eleven minutes and four seconds.

youtube.com/watch?v=yWECK-3DN4

@science

Thomas Willis (1621-1675) : Neurologist, Chemist, Physician

"Willis is not only credited to be the founder of neurology, but he is also seen as the father of comparative neuroanatomy, as his work, in particular Cerebri anatome and De anima brutorum, compare the human brain with that of other species in ‘search for specific human abilities in cognitive functions’ (Molnár, p. 334)."

stjohnscollegelibraryoxford.or

@science @earlymodern @histodon @histodons

attribution: Rijksmuseum, CC0, via Wikimedia Commons. Page URL: commons.wikimedia.org/wiki/Fil

"A Bayesian analysis showed that participants had high expectations and performed descriptively better irrespective of the AI description when a sham-AI was present. Using cognitive modeling, we could trace this advantage back to participants gathering more information."

Agnes Mercedes Kloft, Robin Welsch, Thomas Kosch, and Steeven Villa. 2024. "AI enhances our performance, I have no doubt this one will do the same": The Placebo effect is robust to negative descriptions of AI. In Proceedings of the CHI Conference on Human Factors in Computing Systems (CHI '24). Association for Computing Machinery, New York, NY, USA, Article 299, 1–24. doi.org/10.1145/3613904.364263

@science @technology

attribution: Madhav-Malhotra-003, CC0, via Wikimedia Commons. Page URL: commons.wikimedia.org/wiki/Fil

The History of Ions: Unveiling the Electric Charge

"Around 1830, Faraday posited the existence of charged particles within molecules that migrate between electrodes during electrolysis—an idea ahead of its time."

historyofsciences.blogspot.com

@science

attribution: Science History Institute, Public domain, via Wikimedia Commons. Page URL: commons.wikimedia.org/wiki/Fil

AI deception: A survey of examples, risks, and potential solutions

"Large language models and other AI systems have already learned, from their training, the ability to deceive via techniques such as manipulation, sycophancy, and cheating the safety test. AI’s increasing capabilities at deception pose serious risks, ranging from short-term risks, such as fraud and election tampering, to long-term risks, such as losing control of AI systems."

DOI: doi.org/10.1016/j.patter.2024.

@science

"Researchers publish largest-ever dataset of neural connections

A cubic millimeter of brain tissue may not sound like much. But considering that that tiny square contains 57,000 cells, 230 millimeters of blood vessels, and 150 million synapses, all amounting to 1,400 terabytes of data, Harvard and Google researchers have just accomplished something stupendous."

news.harvard.edu/gazette/story

@science

DeepMind’s AI can ‘predict how all of life’s molecules interact with each other’

"AlphaFold 3 is able to envision how the complex shapes and networks of molecules – present in every cell in the human body – are connected and how the smallest of changes in these can affect biological functions that can lead to diseases."

independent.co.uk/news/science

@science

"...our data suggested that the Japanese population could be best modeled by admixtures of three ancestral components (hereafter K1 to K3). K1 to K3 were the highest in Okinawa, Northeast, and West, respectively (Fig. 1D and table S4). K1 (Okinawa) component maintains a relatively stable fraction of around 12% in Hondo subgroups, except for South (which is a region adjacent to Okinawa), with a higher proportion of 22%. K2 (Northeast) and K3 (West) components showed a cline from West to East."

Xiaoxi Liu et al., Decoding triancestral origins, archaic introgression, and natural selection in the Japanese population by whole-genome sequencing. Sci. Adv. 10, eadi8419 (2024). DOI: doi.org/10.1126/sciadv.adi8419

@science

Science Doesn't Understand How Ice Forms

"What starts off as a simple desire to get a macro shot of a droplet of water freezing quickly leads George to the very edge of scientific knowledge and a shocking fact about most of the water on Earth."

length: 10 minutes 31 seconds

youtu.be/24TB1vPuzIU

@chemistry @science

The art of the bee

"As I set out to write a book on honey bee biology, I kept Humboldt as an aspirational model. Rather than write the typical biology text that reflected an excavation of levels of biological organization like taxonomy, biogeography, physiology, anatomy, etc., I built chapters around themes relating to honey bee impacts, behavior, and ecology."

blog.oup.com/2024/05/the-art-o

@bookstodon @science @biology

"Infant mortality rates have plummeted over the last 50 years.

Globally, they’ve fallen by over two-thirds, from around 10% in 1974 to less than 3% today.

The study’s researchers estimate that 40% of this decline is due to vaccines."

Hannah Ritchie (2024) - “Vaccines have saved 150 million children over the last 50 years” Published online at OurWorldInData.org. Retrieved from: 'ourworldindata.org/vaccines-ch' [Online Resource]

@science

Scientists are trying to get cows pregnant with synthetic embryos

"Synthetic embryos are clones, too—of the starting cells you grow them from. But they’re made without the need for eggs and can be created in far larger numbers—in theory, by the tens of thousands."

technologyreview.com/2024/05/0

@science

Video of sun’s surface shows solar rain, eruptions and coronal moss

"Scientists say the observations of the sun’s complex surface dynamics could help resolve the question of why the sun’s atmosphere is so much hotter than its surface – a longstanding paradox in solar physics."

theguardian.com/science/articl

@science @astronomy

Space Day Reading List 2024

"Space has fascinated authors, scientists, storytellers, and children alike. From a brief history of the moon to a collection of diverse stories connected to the stars, our Space Day reading list will deepen your love and appreciation of the cosmos."

yalebooks.yale.edu/2024/05/03/

@bookstodon @science

What happens when the permafrost thaws? | The Royal Society

"Around 11% of the Earth's land mass is covered by permafrost. But its delicate balance is being threatened by climate change."

length: 8 minutes 14 seconds

youtu.be/SUxsAZKx-94

@science @climatechange

"Even though it was hoped that machines might overcome human bias, this assumption often fails due to a problematic or theoretically implausible selection of variables that are fed into the model and because of small size, low representativeness, and presence of bias in the training data [5.]."

Suchotzki, K. and Gamer, M. (2024) 'Detecting deception with artificial intelligence: promises and perils,' Trends in Cognitive Sciences [Preprint]. doi.org/10.1016/j.tics.2024.04.

@science @psychology

attribution: Madhav-Malhotra-003, CC0, via Wikimedia Commons. Page URL: commons.wikimedia.org/wiki/Fil

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