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- www.space.com Forbidden black holes and ancient stars hide in these 'tiny red dots' (image)
"This is, without a doubt, the most peculiar and interesting set of objects I've seen in my career."
time for big bang revision
- theconversation.com Did inbreeding cause the woolly mammothâs extinction? Our research suggests it was more sudden than that
Scientists have long wondered if the wooly mammoth went extinct due to high levels of inbreeding.
- www.ucsf.edu Are Body Temperature and Depression Linked? Science Says, Yes.
People with depression have higher body temperatures, suggesting there could be a mental health benefit to lowering the temperatures of those with depression.
- www.theguardian.com Toxic PFAS absorbed through skin at levels higher than previously thought
Absorption through skin could be âsignificant source of exposureâ to toxic forever chemicals, study shows
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Be Cool Even When Really Big Goblins Casually Drop Acid
Lemmyversers, I'm looking for some help developing a new mnemonic device.
Inspired by a video by Epic Spaceman, where he explains a handy system for comparing the size of things from a banana to an atom, Iâve come up with a mnemonic device to aid in remembering these scales.
He lists items, each smaller than the previous by a factor of 10:
It goes:
- Banana
- Coin
- Edge of the coin
- Waterbear/microorganism
- Red blood cell
- Bacteria
- "Good virus"/Bacteriophage
- Corona Virus/"Bad Virus"
- DNA
- Atom
So a coin is roughly 1/10 a banana, and the edge of that coin is roughly 1/10 the size if that coin.
It gives good references for thinking about other things if similar size. A sort of banana for scale at each factor of 10.
And allows you to quickly determine approximations like Covid is roughly 1000 times smaller than a red blood cell. Or an atom is roughly 1 billion times smaller than a banana. (That doesn't sound right. Is that actually right?)
Do you think that's a useful memory tool? And are these best touchstones for scale at each level?
The mnemonic I've come up with for it as you may have guessed, is:
- Be
- Cool
- Even
- When
- Really
- Big
- Goblins
- Casually
- Drop
- Acid
Do you have any better ideas or tweaks you"d recommend for the mnemonic or the touchstones?
Would this be helpful when trying to wrap your head around the scale of the micro?
Also, what would make for a good macro version of this? Where everything got bigger by a factor of 10?
- www.sciencealert.com Parkinson's Link to Gut Bacteria Suggests Unexpected, Simple Treatment
Researchers have suspected for some time that the link between our gut and brain plays a role in the development of Parkinson's disease.
- www.psypost.org Ping pong players exhibit superior brain structure and function, study finds
Table tennis players exhibit enhanced brain structure and function, with increased white matter integrity and improved cognitive performance, suggesting that the sport's demands can lead to significant neural and cognitive benefits.
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TPS - The coolest new space pictures: June 2024
www.planetary.org The coolest new space pictures: June 2024Chang'e-6 snapped new photos of the far side of the Moon.
nice color pics from far-side, Changâe-6
- thedonnellycentre.utoronto.ca U of T researchers develop RNA-targeting technology for precisely manipulating parts of human genes
Researchers at the University of Toronto have harnessed a bacterial immune defense system, known as CRISPR, to efficiently and precisely control the process of RNA splicing.
- www.washingtonpost.com Fueled by climate change, extreme wildfires have doubled in 20 years
The six most extreme fire years have occurred since 2017, the study found.
> The frequency and magnitude of extreme wildfires around the globe has doubled in the last two decades due to climate change, according to a study released Monday.
> The analysis, published in the journal âNature Ecology & Evolution,â focused on massive blazes that release vast amounts of energy from the volume of organic matter burned. Researchers pointed to the historic Australia fires of 2019 and 2020 as an example of blazes that were âunprecedented in their scale and intensity.â The six most extreme fire years have occurred since 2017, the study found.
- www.earth.com First proof of leeches jumping captured on video
A groundbreaking discovery, researchers have provided the first conclusive evidence that at least one species of terrestrial leech can jump.
Even as a flying squid, I'm repulsed.
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Kangaroo teeth
mastodon.social Science Scholar (@[email protected])Kangaroo teeth grow foreverâand keep a record of their owner's age and sex https://phys.org/news/2024-06-kangaroo-teeth-owner-age-sex.html #science
humans must be optimized for hand tools and short life spans.
- www.nytimes.com New âDetective Workâ on Butterfly Declines Reveals a Prime Suspect
Agricultural insecticides were a key factor, according to a study focused on the Midwest, though researchers emphasized the importance of climate change and habitat loss.
> The latest insight comes from a study on butterflies in the Midwest, published on Thursday in the journal PLOS ONE. Its results donât discount the serious effects of climate change and habitat loss on butterflies and other insects, but they indicate that agricultural insecticides exerted the biggest impact on the size and diversity of butterfly populations in the Midwest during the study period, 1998 to 2014.
- english.elpais.com The Earthâs core is slowing down
The study of more than 100 earthquakes confirms that the sphere, roughly the size of the Moon, is reversing relative to the planetâs surface
- www.nature.com Sensory secrets of penis and clitoris unlocked after more than 150 years
Low-frequency vibrations arouse genital nerve cells in mice â a finding that might lead to treatments for erectile dysfunction and more.
- www.statsignificant.com How Does Our Sense of Humor Change With Age? A Statistical Analysis
How do our comedic sensibilities form and transform over time?
- hackaday.com Human Brains Can Tell Deepfake Voices From Real Ones
Although itâs generally accepted that synthesized voices which mimic real peopleâs voices (so-called âdeepfakesâ) can be pretty convincing, what does our brain really think âŚ
- phys.org Researchers observe a large anomalous Hall effect triggered by spin-fluctuating devil's staircase
A research group from University of Tsukuba has discovered that fluctuations of electron spins in magnetic materials trigger a large anomalous Hall effect during phase transition known as the devil's staircase magnetic transition.
clickbait headline but interesting materials research. 'a unique magnetic transition phenomenon known as the "spin-fluctuating devil's staircase."'
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Female foragers sometimes hunt, yet gendered divisions of labor are real: a comment on Anderson et al. (2023) The Myth of Man the Hunter
Tl;dr an undergraduate paper last year claiming females hunt just as often as males got picked up by the media and amplified before it was discovered their analysis was deeply flawed and unreliable. Here several anthropologists present a very gracious rebuttal.
- phys.org 25 years of massive fusion energy experiment data open on the 'cloud' and available to everyone
High-temperature fusion plasma experiments conducted in the Large Helical Device (LHD) of the National Institute for Fusion Science (NIFS), have renewed the world record for an acquired data amount, 0.92 terabytes (TB) per experiment, in February 2022, by using a full range of state-of-the-art plasm...
>High-temperature fusion plasma experiments conducted in the Large Helical Device (LHD) of the National Institute for Fusion Science (NIFS), have renewed the world record for an acquired data amount, 0.92 terabytes (TB) per experiment, in February 2022, by using a full range of state-of-the-art plasma diagnostic devices. > >The International Thermonuclear Experimental Reactor (ITER), which is currently under construction in France through the international collaboration of seven parties, is expected to generate approximately 1 TB of data per experiment in 10 years, and LHD is currently the only experiment in the world that produces data closely aligned to ITER. > >The promotion of "Open Science," in which large-scale research data assets are utilized and shared across society, was adopted as a joint statement at the G7 meeting held in Sendai, Japan in 2023. NIFS started full-fledged efforts toward Open Science by establishing the "Open Access Policy" in February 2022 and the "Research Data Policy" in October 2022. > >Since 2023, all the data obtained from LHD experiments are open to the public immediately after acquisition and analysis is completed. All computing program source codes for data analysis are also openly available. > >. . .
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Did Magic Die When Art and Science Split?
Chose a title that reflects what the article actually discusses!
- www.sciencealert.com Wild New Study Suggests Gravity Can Exist Without Mass
What is gravity without mass? Both Newton's revolutionary laws describing its universal effect and Einstein's proposal of a dimpled spacetime, we've thought of gravity as exclusively within the domain of matter.
A new study by astrophysicist Richard Lieu suggests that gravity can exist without mass, proposing thin, shell-like layers of 'topological defects' as an alternative to dark matter for explaining the gravitational binding of galaxies. This theory posits that these defects create a gravitational force without detectable mass, potentially eliminating the need for dark matter in current cosmological models
>Lieu started out trying to find another solution to the Einstein field equations, which relate the curvature of space-time to the presence of matter within it. As Einstein described in his 1915 theory of general relativity, space-time warps around bundles of matter and streams of radiation in the Universe, depending on their energy and momentum. That energy is, of course, related to mass in Einstein's famous equation: E=mc2. So an object's mass is linked to its energy, which bends space-time -- and this curvature of space-time is what Einstein described as gravity, a notch more sophisticated than Newton's 17th-century approximation of gravity as a force between two objects with mass. In other words, gravity seems inextricably linked to mass. Not so, posits Lieu.
>In his workings, Lieu set about solving a simplified version of the Einstein field equations that allows for a finite gravitation force in the absence of any detectable mass. He says his efforts were "driven by my frustration with the status quo, namely the notion of dark matter's existence despite the lack of any direct evidence for a whole century." Lieu's solution consists of shell-shaped topological defects that might occur in very compact regions of space with a very high density of matter. These sets of concentric shells contain a thin layer of positive mass tucked inside an outer layer of negative mass. The two masses cancel each other out, so the total mass of the two layers is exactly zero. But when a star lies on this shell, it experiences a large gravitational force dragging it towards the center of the shell. "The contention of my paper is that at least the shells it posits are massless," Lieu says. If those contentious suggestions bear any weight, "there is then no need to perpetuate this seemingly endless search for dark matter," Lieu adds.
> The next question, then, is how to possibly confirm or refute the shells Lieu has proposed through observations. "The increasing frequency of sightings of ring and shell-like formation of galaxies in the Universe lends evidence to the type of source being proposed here," Lieu writes in his paper. Although he admits that his proposed solution is "highly suggestive" and cannot alone discredit the dark matter hypothesis. "It could be an interesting mathematical exercise at best," Lieu concludes. "But it is the first [mathematical] proof that gravity can exist without mass."
The study has been published in Monthly Notices of the Royal Astronomical Society.
- www.scientificamerican.com The Dairy Industry Must Act Faster to Keep H5N1 Bird Flu from Starting a Human Epidemic
H5N1 is running rampant through dairy cows, putting humans at risk of an epidemic
- www.forbes.com Transgender Athletes Could Be At A Physical Disadvantage, New Research Shows
An IOC-funded study published in the British Journal of Sports Medicine earlier this month suggests transgender athletes could be at a physical disadvantage.
cross-posted from: https://slrpnk.net/post/10495324
> https://bjsm.bmj.com/content/58/11/586.abstract
- arstechnica.com Neutrinos: The inscrutable âghost particlesâ driving scientists crazy
They hold the keys to new physics. If only we could understand them.
We havenât pinned down the masses of any individual neutrino, and we donât even know which ones are heavier than the others. When it comes to our ability to collect raw data, neutrinos present a triple threat: theyâre incredibly lightweight (even the electron weighs over 5 million times more than all the neutrinos combined), they shift their identity as they travel (and their rate of flavor oscillation changes as they travel through different substances, so thereâs no one-size-fits-all solution), and they barely interact with anything in the first place...
- www.sciencealert.com Daycares in Finland Grew Forests, And It Changed Kids' Immune Systems
Playing through the greenery and litter of a mini forest's undergrowth for just one month may be enough to change a child's immune system, according to an experiment in Finland.
- www.cbsnews.com African elephants have individual name-like calls for each other, similar to human names, study finds
Videos show how African elephants may be the first nonhuman species to use vocal name-like identifiers for each other, suggesting "the capacity for some degree of symbolic thought," researchers said.
- www.psypost.org Dyslexia's long shadow: Early reading abilities linked to adult literacy, study finds
Early reading skills in primary school predict adult reading abilities, with dyslexic individuals showing stronger correlations, indicating persistent literacy gaps between typical and dyslexic readers into adulthood.
- apnews.com Scientists have traced the origin of the modern horse to a lineage that emerged 4,200 years ago
Scientists have traced the ancestry of the modern horse to a lineage that emerged 4,200 years ago and quickly became dominant across Eurasia.
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Why do matter and antimatter annihilate?
bigthink.com Ask Ethan: Why do matter and antimatter annihilate?From forming bound states to normal scattering, many possibilities abound for matter-antimatter interactions. So why do they annihilate?
From forming bound states to normal scattering, many possibilities abound for matter-antimatter interactions. So why do they annihilate? Thereâs a quantum reason we simply canât avoid.
- knowablemagazine.org Spots, stripes and more: Working out the logic of animal patterns
More than 70 years ago, mathematician Alan Turing proposed a mechanism that explained how patterns could emerge from bland uniformity. Scientists are still using his model â and adding new twists â to gain a deeper understanding of animal markings.
Interesting findings
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Particle Physics - Fairy Tale or Important?
YouTube Video
Click to view this content.
The video is a group discussion on the necessity to continue exploring particle physics using larger particle energy detectors involving higher energies to achieve further breakthroughs. As conveyed in the video, a project of this size requires a lot of resources both in terms of manpower, architecture and compute, besides a significant amount of money. This post is my personal take on the discussion as a citizen of the world.
Context
--- Gavin begins with the idea of dark matter, trying to discover it in particle collider experiments using indirect observations. Dark matter cannot be directly discovered as it is not known exactly what we are looking for. As Bjørn points out correctly, dark matter results from the mathematical model of cosmic elements(galaxies, universal expansion) which uses this hypothesis to account for the currently unpredictable behavior of matter at large scales.
Gavin talks about exploring science in avenues previously left untouched. There is a reason for the same â the technology to understand the "particle interactions" exists today, that was not there earlier. It is not a simple matter of one element hits another to measure interactions, simulations are created in computers based on the by-products that are caught in the collider's detection mechanisms. Gavin says to "go and build colliders", but it is difficult to build one that is more massive than the last. People in multiple governments are involved, including contractors who will supply raw materials necessary. Sabine correctly points out the challenges that teams would face in building a significantly better collider, that is much larger than the currently existing ones. Gavin talks about "guaranteed discoveries", and the exciting new breakthroughs that would be unearthed and brought to light. Sabine wrongly talks about the "little output" that these breakthroughs are being referred to from her perspective, whereas the discoveries of particle physics supposedly reveal the fundamental elements in the universe.
Sabine wants to discover more in the realm of quantum mechanics and gravity. These are some of the fields which do not require heavy investments and can be done in regular environments to achieve results that could be used for large-scale enhancements, such as building efficient quantum computers. The understanding of gravity from a quantum perspective is still unclear as to what gives birth to the phenomenon, and this is another field she wants the scientific community to invest their time into.
Opinion
--- I think exploring more of particle physics should be delayed. Following are the arguments I propose to justify my point of view.
- Particle physics require a lot of resources to be built in order to confirm the existence of certain particles beyond reasonable doubt, in the form of colliders. I believe the science behind colliders is simple, but it is resource and compute extensive. Time can be devoted towards coming up with better hacks so as to reduce the amount of resources necessary to get the necessary results, which would be important in the long run. The science behind building an efficient collider may be useful in fields like nuclear fusion, where the energy of initiation is high and containing the reaction is equally important. ---
- Particle physics involve working with miniscule, short-lived particles. We may come across new particles which may occur under controlled conditions in a laboratory, a discovery as new as the next bacterium or virus that is synthesized or found out about. Reactions happening at the cosmic level involve high energies occurring in a seemingly random nature(involving huge masses instead of atoms) which is currently beyond understanding. Simulating it on a computer is the best humanity is doing at this point using mathematical models that may not be working at those scales. ---
- Physicists might want to print their names on a research paper that comes across the next obscure short-lived particle in the universe, but the path that leads to the discovery is arduous. The architecture necessary to document the observations are expensive. The energy necessary to replicate the data multiple times in order to prove a point beyond reasonable doubt is equally high. These physicists, on the quest for image and recognition in the scientific community do themselves a favour, more than the Earth for whom these discoveries are supposed to benefit. ---
- Fields like quantum behaviour, which involve studying entanglement and information exchange better explain the state of the universe we are currently living in(on Earth). Individual experiments may not reveal a huge breakthrough such as the hype that would be created upon discovery of a new particle, but in the long run they would be helpful in building new technology that may end up reducing energy consumption. The knowledge of a new particle may not have immediate benefits as opposed to the energy consumption required to prove existence beyond doubt, whereas quantum science requires much less energy to conduct and observe. Technology keeps on getting better and delaying particle physics exploration by a decade or two may speed up discoveries in the same field in future, where quantum technologies might be used to explore the universe at these scales instead of the traditional approach. We may be in a better position to make sense of these discoveries once we have a better understanding of quantum science. ---
- Physicists often justify the field of particle physics by saying that the quest of knowledge is what science is about. This is true, but particle physics is not the only field where this saying is applicable. The hunger for knowledge can be satisfied in the fields of quantum technology, lattice geometry, gene dynamics amongst others which are important from a human perspective. Answering "why the mass of a neutron is what it is" may require answering a question like "under what conditions is the mass being measured as the energy of this particle is supposed to remain same", which may require testing the same under a variety of different conditions and there could be infinite of them. A question like "what energy was used to create a Higgs Boson" may throw off a particle physicist's preconceived notions, as these are nanosecond particles which are infrequent on Earth. [For example, the flavour of an orange may taste different depending upon the soil. Two lead atoms can be different based on their radioactivity] ---
- Fields like quantum computing are resource extensive as they require low temperatures and expensive hardware. A.I compute can still be considered beneficial for the common people, but the more people use it, the more energy consumption it clocks. Given this situation, particle physics exploration can also be justified which will obviously involve consuming significantly lesser energy once built, which is why these fields should be subdued as much as possible. The money that is being spent on these resource-hungry technologies can be invested for Earth's welfare projects like afforestation. Incentivized afforestation would make the future a greener and cleaner place to perform exciting experiments that quench human beings' thirst for knowledge.
Conclusion
--- Lobbying communities and powerful entities is a radical approach and should be prevented if possible, particularly if it upsets the energy balance on Earth. Harvesting energy via Dyson spheres, using quantum technology to solve difficult problems easily sound exciting, but a balanced and patient approach to get there is more important than rushing blindly to find solutions to the universe's mysteries. Current approaches are bearing heavy operational costs that is detrimental for the future generations who are supposed to reap the benefits of the knowledge we are accumulating today.
- scitechdaily.com New Hope in Alzheimerâs Fight: Researchers Identify Unique Early Biomarker
This molecule is directly associated with the expression of the cellular prion protein located on the surface of nerve cells. The research, conducted by the Institute for Bioengineering of Catalonia, paves the way for early detection of Alzheimer's disease. A new study conducted by the Molecular
Clinical relevance of miRNAs as biomarkers is growing due to their stability and detection in biofluids. This study has identified miR-519a-3p as a potential early biomarker for Alzheimerâs, linked to prion protein expression. This molecule is directly associated with the expression of the cellular prion protein located on the surface of nerve cells. miR-519a-3p may potentially be used as a biomarker of preclinical stages of the disease.
https://www.sciencedirect.com/science/article/pii/S0925443924001765?via%3Dihub (open access)
- mashable.com At 11,000 feet up, scientists find Earth broke a scary record
"Rising faster than ever."
- www.nbcnews.com 'The big one': Researchers gain clearest picture yet of fault that threatens the Pacific Northwest
An underwater fault could devastate the West Coast with a major earthquake and tsunami. Researchers mapped it comprehensively for the first time.
- www.nature.com Huge amounts of bird-flu virus found in raw milk of infected cows
New findings point to the milking process as a possible route of avian-influenza spread between cows â and from cow to human.
- www.wired.com The Worldâs Largest Fungarium May Unlock the Mysteries of Carbon Capture
Research is uncovering the key role that fungi play in getting soils to absorb carbon, and how humanityâs actions aboveground are wreaking havoc in the mysterious fungal world below.