The hottest Science Substack posts right now

And their main takeaways
Category
Top Science Topics
Noahpinion • 12529 implied HN points • 22 Mar 26
  1. AI will rapidly accelerate materials discovery and optimization, helping find candidates for things like room‑temperature superconductors, solid‑state batteries, novel catalysts, and topological or quantum materials while autonomous labs compress the loop from design to experiment.
  2. AI is most powerful where there’s a huge combinatorial search space, good simulation data, and fast experimental feedback (for example drugs, materials, climate parameterizations, and chip design), but it struggles where data are sparse, experiments are slow, or real progress requires new conceptual frameworks; and even when discoveries happen, manufacturability, testing, and regulatory inertia often dominate commercialization timelines.
  3. Beyond simple, teachable laws, AI can uncover complex but reproducible "Cloud Laws" that humans can’t easily compress or explain, potentially transforming biology, neuroscience, and social systems; these advances may function as powerful black‑box tools rather than neat, human‑readable theories.
Astral Codex Ten • 12388 implied HN points • 26 Mar 26
  1. Genetic risk for schizophrenia breaks into two parts: one shared with bipolar that seems to boost educational attainment (a tradeoff that might relate to creativity or motivation), and another separate part that harms IQ via neurodevelopmental failures.
  2. More broadly, many bad outcomes are mixtures of tradeoffs (choices or traits that bring other benefits) and failures (purely harmful factors), so things like poverty, relationship status, or illness can arise for either reason or both.
  3. This isn’t universal: some conditions are simply failures caused by bad mutations, and it’s usually the risk factors — not the disorder itself — that may carry compensating advantages, so don’t assume every harm has a hidden benefit.
Popular Rationalism • 277 implied HN points • 02 Nov 24
  1. The new method of using customized viral receptors (CVRs) allows scientists to study how viruses infect cells more safely, but it also poses serious risks if misused.
  2. These CVRs can make viruses more contagious and easier to spread, raising concerns about biosecurity and the potential for creating bioweapons.
  3. There's an urgent need for stricter regulations and accountability in viral research to prevent misuse of technologies like CVRs and ensure public safety.
Experimental History • 59806 implied HN points • 03 Mar 26
  1. For-profit scientific publishers extract large sums from publicly funded research by paywalling papers and charging institutions and authors to publish or read work the public already paid for.
  2. Many ā€˜open access’ rules let publishers just shift costs onto authors through huge article-processing fees, so the profit-skimming continues unless for-profit publishers are cut out entirely.
  3. This is a collective-action problem that only governments and big funders can solve; banning for-profit journals from handling grant-funded work would save money and create room for nonprofit, more honest publishing models.
Cremieux Recueil • 477 implied HN points • 25 Mar 26
  1. Researchers often use between-person comparisons that aren’t causally informative even when within-person or sibling designs are possible, so their estimates can be biased by unmeasured confounders.
  2. When you run within-family or within-person analyses, many headline associations (for example, claims that more social media use lowers cognition) disappear, suggesting those original results were artifacts of confounding.
  3. The field routinely skips basic robustness checks and measurement-invariance tests; empowering methodologists, providing better tools, and enforcing stricter editorial standards would greatly improve research reliability.
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Ground Truths • 8223 implied HN points • 15 Mar 26
  1. CHIP (clonal hematopoiesis) is a common, age-related blood stem cell change that meaningfully raises risk for heart disease, blood cancers, clots, and inflammatory problems, with risk depending on clone size and the specific mutated gene.
  2. New research shows CHIP is actionable: drugs like low‑dose colchicine, IL‑1β blockers, inflammasome inhibitors, and other agents can reduce CHIP or its downstream risks, and genetic discoveries point to future prevention strategies.
  3. Testing for CHIP is highly informative but currently limited by high cost, complex deep‑sequencing methods, and slow guideline uptake, so cheaper targeted assays and more clinical programs could enable screening and early prevention for older adults.
Your Local Epidemiologist • 1478 implied HN points • 25 Mar 26
  1. Glyphosate is the world’s most used herbicide, and whether it is harmful depends on the dose and how much someone is actually exposed to.
  2. The science is mixed: very high doses cause cancer in animals, some human studies link heavy occupational exposure to higher risks (including signals for non‑Hodgkin lymphoma), but typical consumer exposures are much lower and the overall population risk remains uncertain.
  3. For everyday life, food residues are generally tiny and not a reason to panic, but farm workers and people living near sprayed fields face higher exposures and should use protective gear and community measures like buffer zones.
Asimov Press • 438 implied HN points • 23 Mar 26
  1. Scaling AI and more data mainly improves prediction inside current frameworks, but it won’t by itself create the simple, reframing ideas that drive paradigm shifts. This risks a kind of ā€œhypernormal scienceā€ where detail increases but true conceptual breakthroughs become rarer.
  2. Major scientific revolutions come from simple unifying principles, cross-domain analogies, outsider perspectives, or new sensory grounding, not just better curve‑fitting. To foster breakthroughs, AI must be built to search for simplicity, draw structural analogies, and be grounded beyond narrow benchmarks.
  3. Designing disruptive science requires deliberate changes to both AI and research institutions: run controlled agent experiments, protect small risky teams, and change incentives so novel, risky reframings are discovered and rewarded. Without that metascientific engineering, AI will mostly accelerate conventional work rather than spark revolutions.
Everything Is Amazing • 583 implied HN points • 22 Mar 26
  1. The Ig Nobel Prizes celebrate funny, oddball science that makes people laugh but often points to real scientific value, and the ceremony is moving from the U.S. to Zurich after 35 years.
  2. The awards mix playful inventions (like the SpeechJammer and Clocky) with sharp satire that calls out absurd or harmful behavior by politicians and corporations.
  3. Research that sounds silly—such as studies on pareidolia, seeing faces in objects—can still reveal important truths about how the brain works and how we form social bonds.
Postcards From Barsoom • 4302 implied HN points • 23 Oct 24
  1. A huge telescope called the 'Monster Telescope' is proposed to help us see and study exoplanets better. It's designed to be one kilometer wide, allowing us to take detailed pictures of other planets in different star systems.
  2. Even though the Monster Telescope has some limitations, like not being able to see very far or clearly, it can help scientists gather data about exoplanets much more effectively than current telescopes.
  3. There's excitement around building advanced telescopes that can operate in space, and ideas like the 'Luciola hypertelescope' suggest we could even create large arrays of flying mirrors to enhance our ability to observe the universe.
Experimental History • 21198 implied HN points • 17 Feb 26
  1. Many famous psychology and neuroscience findings are under fresh scrutiny because of shady methods, tiny samples, or failed replications, so canonical stories aren’t as solid as they once seemed.
  2. How researchers measure things matters a lot — using correlation versus absolute error can lead to opposite conclusions about whether people understand how public opinion has changed.
  3. A bunch of curious, practical items matter too: interviews, art and career advice, puzzles and internet myths show the value of digging deeper, and a few vocal individuals often dominate complaint systems and waste resources.
Infinitely More • 7 implied HN points • 15 Mar 26
  1. The natural sum and product (Hessenberg operations) make the ordinals into a commutative semiring, contrasting with standard ordinal arithmetic where addition and multiplication are not commutative.
  2. The natural ordinal operations match the operations on surreal numbers, so the ordinals under natural addition and multiplication form a subsemiring of the surreals.
  3. There are five independent, self-contained ways to define the natural sum and product—order-theoretic, computational, proof-theoretic, and others—and all five are equivalent, giving complementary perspectives and routes to generalization.
Optimally Irrational • 69 implied HN points • 19 Mar 26
  1. Reciprocal altruism — Cooperation can evolve between non-kin when people trade favors in repeated interactions, and this dynamic breeds moral emotions and incentives to spot or punish cheaters.
  2. Parental investment — Differences in gamete size and child-rearing costs push the sexes into different mating strategies: the higher-investing sex is choosier and favors long-term care, while the lower-investing sex tends toward short-term mating and competition.
  3. Parent–offspring conflict — Parents and children have overlapping but not identical genetic interests, so offspring will demand more resources than parents are selected to give, producing conflicts from pregnancy through weaning and prompting parental countermeasures.
Maximum Effort, Minimum Reward • 894 implied HN points • 14 Mar 26
  1. A true laser needs three things: a gain medium for stimulated emission, a pump that creates a population inversion, and a cavity that gives feedback so one wavelength is amplified. Stimulated emission makes identical photons so the light can cascade into a coherent beam.
  2. Almost anything with suitable electronic states and some feedback can be made to lase if you pump it hard enough — people have made lasers from dyed jell‑O, peacock feathers, biological tissue, edible microlasers, and even parts of planetary atmospheres.
  3. Practical and fundamental limits stop some things from lasing: losses that grow with pump power and the rapidly shrinking upper‑state lifetime at high frequencies mean materials like silicon and very high‑energy ranges (UV, X‑ray, gamma) are effectively impossible to lase with realistic pumps.
Popular Rationalism • 673 implied HN points • 27 Oct 24
  1. We need to focus more on basic research because it leads to major medical and technology breakthroughs. Investing in understanding our foundations can help us tackle serious health and environmental issues.
  2. Scientists, medical researchers, and environmental experts must work together to solve health problems. Our health is connected to the environment, so it's important to study how pollution and chemicals impact our bodies.
  3. Technology like machine learning can change healthcare for the better. By using these tools wisely, we can identify disease causes more accurately and provide better treatments while keeping ethics in mind.
Common Sense with Bari Weiss • 2323 implied HN points • 10 Mar 26
  1. Fraudulent and manipulated data happen in science, and even high-profile papers and labs can be wrong or dishonest.
  2. Online forums and independent sleuths—including students and journalists—are playing a big role in finding and exposing bad science that institutions missed.
  3. Academic incentives and prestige often protect powerful researchers and can punish those who insist on honest, rigorous work, making it harder to fix the problem.
Everything Is Amazing • 1887 implied HN points • 13 Mar 26
  1. We usually underestimate how friendly strangers will be, so overcoming the hesitation and saying hello often leads to a positive response.
  2. Small, visible cues or choosing a live interaction (like a paper map or a phone call instead of email) make it much easier to start conversations and those exchanges feel more rewarding.
  3. Short, unexpected chats can improve people’s mood—even for those who prefer solitude—and they usually feel less awkward than we expect.
Richard Hanania's Newsletter • 1560 implied HN points • 17 Mar 26
  1. Trivers' theory of self-deception is a fundamental framework for understanding politics and social life, and it changes how we interpret people's statements and actions.
  2. Grifting and sincere belief can be complementary, not opposites—people can genuinely hold an idea while also acting in ways that benefit them.
  3. Asking whether someone "really believes" something or is "grifting" is often too simplistic and needs more precise distinctions, because belief, motivation, and signaling frequently overlap.
The Intrinsic Perspective • 21487 implied HN points • 15 Jan 26
  1. You can prove that no scientifically meaningful (falsifiable, non‑trivial) theory of consciousness can consistently say large language models are conscious, because swapping in different implementations that keep the same behavior either falsifies the theory or makes it trivial.
  2. Simple static substitutes like lookup tables or minimal feedforward nets can reproduce an LLM's inputs and outputs but are provably non‑conscious, and because LLMs are very close to those substitutes there isn't room for them to be conscious.
  3. The robust way out is to tie consciousness to continual, online learning; this means research should focus on learning-as-it-happens rather than static input/output or final intelligence alone.
Knowingless • 1566 implied HN points • 12 Mar 26
  1. Scales are groups of survey items found with factor analysis that let you measure hidden traits efficiently, but they need lots of questions and many respondents to be reliable, and metrics like Cronbach’s alpha can be gamed by redundant items.
  2. Which items you include strongly shapes what factors you find, so a narrow or biased question set will miss whole traits; crowdsourcing a huge swath of questions can reveal unexpected dimensions but doesn’t eliminate sampling or submission bias.
  3. When you open up question-space widely, the biggest stable dimensions that tend to pop out are political left–right, belief/mysticism versus rationality, and a happy-versus-sad emotional axis, with many smaller subfactors depending on how finely you break the data.
Complexity Thoughts • 259 implied HN points • 28 Oct 24
  1. Biodiversity is important for the stability of ecosystems, as different species contribute to their health and resilience. Losing biodiversity can harm not just the species we see, but also the tiny organisms that support them.
  2. Ecosystem synchrony is a concept that helps us understand how different ecosystems respond to changes in their environment. It looks at how similar patterns in ecosystem functions can reveal important information about their health.
  3. Belief dynamics show how people's beliefs change over time, influenced by their social networks. Understanding these dynamics can help tackle issues like misinformation and social conflict.
arg min • 1071 implied HN points • 22 Oct 24
  1. The Higgs boson was theoretically discovered, but many people argue that this claim isn't solid due to complex statistical methods used in the research. It's not just about finding a particle; it's heavily based on probabilities.
  2. A lot of the processes in particle physics rely on trust within scientific communities and committees. They decide what counts as 'discovery' often through agreed conventions rather than direct proof.
  3. Questions about the Higgs boson reflect broader concerns in science regarding accountability. It shows that scientific findings often come down to people, their processes, and their decisions rather than just raw data.
Asimov Press • 386 implied HN points • 18 Mar 26
  1. The white lab coat began in 19th-century surgery as a practical, washable garment tied to new hygiene practices, replacing the dark, blood-stained frock coats.
  2. Over time the white coat turned into a powerful public symbol of science and medicine, signaling professionalism, cleanliness, and group identity.
  3. The coat’s symbolic power often outpaces its actual safety, so researchers are inventing better, functional materials and designs—but widespread change requires cultural as well as technological shifts.
Cremieux Recueil • 465 implied HN points • 19 Mar 26
  1. The National Collaborative Perinatal Project was fully digitized and modernized into a public, searchable dataset with precomputed variables and kinship links, enabling sibling- and cousin-based analyses; the data and code are openly available for researchers to use.
  2. Analyses support a real general intelligence factor (g) that is strongly linked to genetic influences, with little evidence that aggregate gene–environment interactions matter, though shared environment contributes more to verbal and academic subtests.
  3. Within-family tests show breastfeeding has no clear effect on IQ and socioeconomic effects on IQ are much smaller than cross-sectional estimates; the Black–White IQ gap at age seven is estimated to be largely genetic (~65–69% of the common variance) and brain size correlates with IQ but is largely explained by IQ.
Heterodox STEM • 142 implied HN points • 18 Mar 26
  1. IRBs have drifted from their core job of assessing participant risk and now too often overregulate, police intellectual content, and block or delay valid research.
  2. The Mudd Code lays out concrete reforms—more transparency, stronger fidelity to Belmont principles, and a renewed focus on balancing risk and benefit instead of trying to eliminate risk entirely.
  3. Momentum is building for change: professional groups and institutions are engaging with the Mudd Code and investigators are encouraged to read it and discuss these reforms with their IRBs.
arg min • 456 implied HN points • 25 Oct 24
  1. The Higgs discovery shows how science relies on consensus rather than just statistics. It's all about how many scientists agree on something, and that's what really gives it weight.
  2. Complex governance structures are necessary in big science projects. These systems help teams work together and make important decisions about groundbreaking discoveries.
  3. Sometimes, playful writing can lead to misunderstandings. It's important to find the right balance between being engaging and being precise when discussing complex topics.
Ground Truths • 14172 implied HN points • 22 Jan 26
  1. Multiple large natural experiments across countries show shingles vaccination is consistently linked to lower dementia rates, and the newer Shingrix vaccine may offer even greater protection.
  2. Studies tie the vaccine to slower biological aging and shifts in immune and inflammation markers over years, with bigger benefits seen in women, though blood markers of neurodegeneration haven’t changed and the exact mechanism is still unknown.
  3. Other studies suggest cardiovascular benefits too, so getting Shingrix at 50+ may offer broad protection, but more mechanistic research and replications are needed to confirm these effects.
Construction Physics • 25471 implied HN points • 18 Dec 25
  1. Scientific discovery is messy and often depends on unexpected events, false starts, and long iterative work before clear results emerge.
  2. Major breakthroughs usually require specialized tools and technical capabilities, like high vacuums and precise equipment, that only well-resourced labs can provide.
  3. Real breakthroughs need institutional support and freedom for long-term, curiosity-driven research, but that approach is costly and hard to justify in profit-driven organizations.
arg min • 436 implied HN points • 24 Oct 24
  1. Statistical tests are designed to help separate real signals from random noise. It's not just about understanding what they mean, but what they can do in practical situations.
  2. Many people misuse statistical tests, which can lead to misunderstandings about their purpose. Communities should establish clear guidelines on how to use these tests correctly.
  3. The main function of statistical tests is to regulate opinions and decisions in various fields like tech and medicine. They help ensure that important standards are met, rather than just preventing errors.
Asimov Press • 754 implied HN points • 11 Mar 26
  1. AI models now let researchers design antibody binders on the computer, greatly reducing the experimental search effort needed to find promising candidates.
  2. There is a practical five-step pipeline — pick a target, prepare or predict its structure, run design tools, filter candidates, and validate in the lab — which uses public tools but typically costs thousands of dollars.
  3. Design success is highly target-dependent and improving affinity, specificity, and drug-like properties remains difficult and costly, but AI makes it realistic to engineer more complex, multi-property binders going forward.
lcamtuf’s thing • 2244 implied HN points • 28 Feb 26
  1. Simple rational numbers (like p/q) have only a few very-close different fractions with small denominators; once denominators reach q or larger you can’t get new inexact approximations that beat the 1/b^2 error threshold.
  2. Irrational numbers, by contrast, admit infinitely many surprisingly accurate rational approximations; Dirichlet’s pigeonhole argument guarantees infinitely many fractions a/b with error on the order of 1/b^2 (for example 22/7 and 355/113 for Ļ€).
  3. Intuitively, rationals form a uniform grid so their gaps limit how close other fractions can get, while irrationals sit inside those gaps and repeated multiples plus the pigeonhole principle produce arbitrarily close rational hits, which is the essence of Diophantine approximation.
lcamtuf’s thing • 4489 implied HN points • 15 Feb 26
  1. Natural numbers can be built from a base element (zero) and a successor rule, and addition and multiplication follow from simple recursive definitions.
  2. Integers and rationals are formed by ordered pairs and equivalence classes so subtraction and division have in-system representations, and these extended sets remain countable.
  3. Computable numbers are those a Turing machine can approximate and are still countable, but the real numbers are uncountable (by diagonalization), so most reals cannot be computed.
Asimov Press • 303 implied HN points • 16 Mar 26
  1. People overwhelmingly prefer a once‑daily pill, but peptide drugs are ruined by stomach acid and enzymes and are poorly absorbed, so oral GLP‑1s have very low bioavailability and require huge doses that make them expensive.
  2. Scientists solved injectables by changing the peptide and adding a fatty tail so the drug resists breakdown and sticks to albumin, which gives long lasting, effective once‑weekly shots that oral versions still struggle to match.
  3. A promising shortcut is to engineer edible microbes like spirulina to produce and hide GLP‑1 inside cell walls, which could protect the peptide and slash purification costs to make affordable oral pills — though safety, regulation, and public acceptance remain hurdles.
Astral Codex Ten • 27599 implied HN points • 03 Dec 25
  1. Recent research shows that most traits are influenced by genetics, but researchers still can't agree on how much. Some studies suggest up to 80% heritability, while others find it closer to 30%.
  2. The new study used advanced genetic analysis on a large number of people, capturing 88% of the heritability gap previously unexplained by genetics. However, this still leaves a significant portion unaccounted for.
  3. There's a divide in how people interpret the results: some believe this study supports the idea of many rare genetic variants influencing traits, while others think it confirms that heritability might not be very high to begin with.
Who is Robert Malone • 12 implied HN points • 22 Mar 26
  1. Repeated mRNA boosters can drive a progressive shift toward IgG4 antibodies that keep binding the spike protein but weaken Fc effector functions (like ADCC and complement) and have been linked to higher breakthrough infection risk.
  2. The class switch is driven by IL‑10–rich germinal center signals and becomes encoded in long‑lived memory B cells and plasma cells, so it is durable and not detected by standard total anti‑spike IgG tests.
  3. Because this effect is cumulative and immunologically specific, booster policy and surveillance should be risk‑stratified with longer minimum intervals, pediatric reassessment, and prospective monitoring using IgG subclass assays and targeted safety studies.
A Piece of the Pi: mathematics explained • 30 implied HN points • 22 Mar 26
  1. The triangular Lights Out game reduces to linear algebra over the field with two elements: pressing a button toggles bits mod 2, pressing a button twice cancels, order doesn’t matter, and any solution is a subset of buttons pressed once.
  2. Solvability and uniqueness depend on the kernel of the toggle map: if the kernel is only the empty set (ā„“=0) then every starting state has a unique solution, which occurs for certain side lengths such as 1, 3, 4, 7, 8, 9, 11, 15, 16, 17, 20, and 21.
  3. If the kernel is nontrivial (ā„“>0) there are nonzero button patterns that have no effect and some starting configurations cannot be solved; the kernel is a 2^ā„“-sized vector space over GF(2) and its patterns often form visually striking shapes like the Sierpiński triangle.
Asimov Press • 393 implied HN points • 13 Mar 26
  1. Φ80 quietly infects lab E. coli by integrating into bacterial genomes and replicating slowly, so cultures often look healthy while the phage accumulates and can sporadically cause cell lysis.
  2. P1-transduction, a routine method for moving genes, can unintentionally ferry Φ80 between strains because P1 infection triggers Φ80 replication, turning researchers into unwitting dispersers.
  3. Detecting and stopping Φ80 is hard because targeted or short-read sequencing usually misses prophages and researchers have little incentive to screen; adopting long-read whole-genome sequencing and greater awareness would make infections easier to spot and prevent.
COVID Reason • 753 implied HN points • 15 Oct 24
  1. During the COVID-19 pandemic, there was a flood of poor-quality scientific studies. Many rushed papers were published that had unreliable findings, highlighting a major issue in research standards.
  2. To improve science in the future, researchers need to focus on real problems and provide real-world data instead of relying heavily on models. Transparency is also crucial so everyone can trust the research and its sources.
  3. Healthcare workers faced immense challenges during the pandemic and deserve more support. The lessons learned from this crisis should help us prioritize quality scientific work and the human aspect of healthcare.
Knowingless • 4389 implied HN points • 05 Feb 26
  1. A lot of top fetish/kink surveys use small or convenience/targeted samples and often lack full anonymity, which makes them prone to selection bias and limits how much we can trust their conclusions.
  2. Very large internet surveys, even if imperfect, can outperform many academic studies on sample size and breadth and often replicate known psychological patterns, making them valuable for studying relationships even if raw base-rate estimates are shaky.
  3. Structural problems—publication incentives, peer-review politics, restrictive IRBs, and uneven statistical skill—are major reasons the field stays small-scale and cautious instead of improving methods and collecting bigger, better data.
arg min • 734 implied HN points • 14 Oct 24
  1. Statistics should help us test claims by measuring how surprising the results are. However, there's doubt about whether our current statistical tests actually do this well.
  2. Randomized trials are important because they help us learn about treatments that may not always work. They focus on safety as much as they do on finding effective solutions.
  3. The field of statistics needs to be clear about its purpose. We should distinguish between using statistics for proving theories and for practical decision-making like quality control.