docmechanic

16 ms·

31.
by docmechanic 1y ago
I find it fascinating that a genetic mutation from 7,000 years ago protects from a modern disease less than 100 years old.
32.
by docmechanic 1y ago
Previous discussion here: https://news.ycombinator.com/item?id=43794740
33.
Study links fossilized flying reptile tracks to animals that made them(sciencedaily.com)
2 points by docmechanic 1y ago|0 comments
34.
Rare earth element extraction bolstered by new research(sciencedaily.com)
4 points by docmechanic 1y ago|1 comments
35.
by docmechanic 1y ago
Summary: 'A more efficient and environmentally friendly approach to extracting rare earth elements that power everything from electric vehicle batteries to smartphones could increase domestic supply and decrease reliance on costly impo
36.
Geobiology: Iron, sulfur, heat – and first life(sciencedaily.com)
4 points by docmechanic 1y ago|1 comments
37.
by docmechanic 1y ago
Summary: 'The very first cells obtained their energy from geochemical reactions. Researchers have now managed to recreate this ancient metabolic process in their laboratory.'
38.
by docmechanic 1y ago
'The findings de-emphasize the importance of the prefrontal cortex in consciousness, suggesting that while it's important for reasoning and planning, consciousness itself may be linked with sensory processing and perception. In ot
39.
by docmechanic 1y ago
Summary: 'An experiment seven years in the making has uncovered new insights into the nature of consciousness and challenges two prominent, competing scientific theories: Integrated Information Theory (IIT) and Global Neuronal Workspac
40.
Landmark experiment sheds new light on the origins of consciousness(sciencedaily.com)
5 points by docmechanic 1y ago|2 comments
41.
Anatomy of a 'zombie' volcano: Investigating the cause of unrest inside Uturuncu(sciencedaily.com)
6 points by docmechanic 1y ago|2 comments
42.
by docmechanic 1y ago
Summary: 'Scientists have collaborated to analyze the inner workings of Bolivia's 'zombie' volcano, Uturuncu. By combining seismology, physics models and analysis of rock composition, researchers identify the causes of U
43.
Billion-year-old impact in Scotland sparks questions about life on land(sciencedaily.com)
3 points by docmechanic 1y ago|1 comments
44.
by docmechanic 1y ago
Summary: 'New research has revealed that a massive meteorite struck northwestern Scotland about 200 million years later than previously thought, in a discovery that not only rewrites Scotland's geological history but alters our un
45.
A new map of arthropod evolution, from fossils to embryos(phys.org)
3 points by docmechanic 1y ago|1 comments
46.
by docmechanic 1y ago
'This model not only challenges traditional distinctions between short-germ and long-germ development—terms that refer to how many segments are defined early in an embryo's life—but also reframes the role of well-known genetic reg
47.
by docmechanic 1y ago
Thank you! Yes, the images are impressive.
48.
Female bonobos keep males in check – not with strength, but with solidarity(sciencedaily.com)
6 points by docmechanic 1y ago|1 comments
49.
by docmechanic 1y ago
'Female bonobos team up to suppress male aggression against them -- the first evidence of animals deploying this strategy. In 85% of observed coalitions, females collectively targeted males, forcing them into submission and shaping the
50.
by docmechanic 1y ago
'A 113-million-year-old hell ant that once lived in northeastern Brazil is now the oldest ant specimen known to science, finds a new report. The hell ant, which was preserved in limestone, is a member of Haidomyrmecinae -- an extinct s
51.
The oldest ant ever discovered found fossilized in Brazil(sciencedaily.com)
6 points by docmechanic 1y ago|4 comments
52.
Skeletal Evidence of Roman Gladiator Bitten by Lion in Combat(sciencedaily.com)
3 points by docmechanic 1y ago|1 comments
53.
by docmechanic 1y ago
'Bite marks found on a skeleton discovered in a Roman cemetery in York have revealed the first archaeological evidence of gladiatorial combat between a human and a lion.'
54.
by docmechanic 1y ago
'A new study found that some rattlesnakes are producing simpler venoms containing fewer and more focused toxin families than complex venoms -- a surprising discovery that challenges long-held ideas about how living alongside a variety
55.
What rattlesnake venom can teach us about evolution: New USF study(sciencedaily.com)
2 points by docmechanic 1y ago|1 comments
56.
by docmechanic 1y ago
Source: Generative Deep Learning by David Foster, 2nd edition, published in 2023. From “Tokenization” on page 134. “If you use word tokens: …. willnever be able to predict words outside of the training vocabulary.” "If you use charact
57.
by docmechanic 1y ago
Pretty sure that we’re talking apples and oranges. Yes to the arbitrary byte sequences used by tokenizers, but that is not the topic of discussion. The question is will the tokenizer come up with words not in the training vocabulary. Wor
58.
by docmechanic 1y ago
That’s only true if you tokenize words rather than characters. Character tokenization generates new content outside the training vocabulary.
59.
Parts of our DNA may evolve much faster than previously thought(sciencedaily.com)
4 points by docmechanic 1y ago|1 comments
60.
by docmechanic 1y ago
'By comparing the genomes of parents to their children, the researchers could detect how often new mutations occurred and were passed down, a rate that Jorde says is as fundamental to understanding human biology as the speed of light i

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