The hottest Science Substack posts right now

And their main takeaways
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The Dadaism of "All Theories Are False"

Bet On It • 271 implied HN points • 02 Feb 26
📖 Philosophy Science
  1. Saying "all theories are false" is misleading because many theories are true within the precision and conditions they intend; they only become "false" if you demand impossible infinite precision.
  2. Whether a theory can be confirmed depends on its form: universal claims ("all X are Y") need exhaustive checking to be fully confirmed, while existential claims ("some X are Y") can be confirmed by a single example.
  3. Blanket slogans that reject all knowledge tend to encourage unnecessary skepticism; it's more useful to expect room for improvement and to state explicit caveats rather than dismiss theories outright.

Substack Reads: The double exposure effect, a mustard obsession, and the color of Neptune

read • 4894 implied HN points • 10 Feb 24
🎭️ Culture Science
  1. Nominees with great performances in multiple roles can lead to extra praise, known as the double exposure effect.
  2. Mustard packaging has a rich history dating back centuries, with brands like Grey Poupon and Maille showcasing timeless design.
  3. Neptune's true color is not actually blue as previously thought, but a milky, unmemorable interstellar cataract, challenging our perceptions.

A low point

The Crucial Years • 817 implied HN points • 19 Dec 25
🌞 Climate & Environment Science
  1. There’s a clear sense of being at a low point and feeling emotionally strained.
  2. There’s cautious hope that things will get better, but that optimism is tentative and uncertain.
  3. The content is behind a paywall and only available to paid subscribers, requiring subscription or sign-in to access.

Niccolò Machiavelli, Adam Smith, and the crisis of modern science

uTobian • 4952 implied HN points • 21 Jan 24
📖 Philosophy Science
  1. In modern times, freedom is often associated with unrestrained passion, but the idea of freedom through personal restraint from ancient times is considered a better path to happiness and fulfillment.
  2. The writings of Niccolò Machiavelli marked a shift in the concept of freedom towards acknowledging human selfishness and focusing on political security through class conflict.
  3. The current crisis in science and medicine is prompting a reevaluation of the assumption that scientists and doctors are inherently virtuous, suggesting the need for reforms based on the idea that they may be motivated by greed and power.
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Another year over, and a new one just begun

Wrong Side of History • 465 implied HN points • 31 Dec 25
🎭️ Culture Science
  1. 2025 felt like a tech and medical tipping point, with big AI advances and major medical breakthroughs promising longer, healthier lives.
  2. Britain’s political consensus broke down as new parties rose and government missteps exposed deep questions about national identity and a needs-based approach many see as unfair to the majority.
  3. Culture wars over 'woke' policies, DEI, and education are eroding institutions and careers, leaving many people frustrated even as infrastructure and progress projects are promoted as solutions.

THB Insider #28 - Thanksgiving Reading

The Honest Broker Newsletter • 922 implied HN points • 27 Nov 25
📰 News Science
  1. Thanksgiving is a time for family, food, football, and simple traditions like putting the turkey in at sunrise.
  2. The community prizes intellectual hospitality and genuine debate, valuing collegiality, diverse views, and mutual support.
  3. The newsletter curates recommended readings for the long weekend and some content is available only to paid subscribers.

The Smoking Glove

Arkmedic's blog • 4363 implied HN points • 19 Jan 24
🇺🇸 U.S. Politics Science
  1. The SARS-Cov-2 virus was likely lab-made and created using a specific splicing enzyme.
  2. Lab techniques like restriction endonucleases are used to create infectious viruses from DNA clones.
  3. Evidence suggests that EcoHealth Alliance ordered a specific enzyme needed to splice the COVID virus, supporting claims of a lab origin.

Hidden Open Thread 416.5

Astral Codex Ten • 412 implied HN points • 14 Jan 26
🎭️ Culture Science
  1. The content is behind a paid subscription, so you must subscribe or sign in to read it.
  2. It’s part of a numbered "Hidden Open Thread" series with links to previous and next entries.
  3. The page shows engagement indicators and sharing options, implying reader interaction and shareability.

WARNING: Elon Musk is crippling the future of the United States

Marcus on AI • 8457 implied HN points • 09 Feb 25
🇺🇸 U.S. Politics Science
  1. Drastic cuts to funding for science and universities could hurt America's future. Less money means fewer resources for research and education.
  2. Many talented scientists and academics might leave the country because of these funding cuts. This can damage the reputation of American universities.
  3. The decisions being made could have negative effects even on people in red states, showing that these cuts impact everyone, not just certain areas.

There Will Be Blood

The Vajenda • 3734 implied HN points • 23 Jan 24
🏥 Health & Wellness Science
  1. The menstrual cycle is a unique and vital aspect of human biology.
  2. Historically, female physiology has been viewed as inferior, leading to inadequate research and medical care for those who menstruate.
  3. Education and knowledge about menstruation are crucial to combat misinformation and empower individuals to advocate for their health.

Replay: What parents should know about the science of learning

The Bell Ringer • 339 implied HN points • 02 Aug 24
🚌 Education Science
  1. Understanding how children learn can help parents support their education better. It's important to know what methods work best for different types of learners.
  2. Staying involved in your child's education can make a big difference. Regular communication with teachers and participation in school activities can help children succeed.
  3. Encouraging a growth mindset in children is key. Teach them that making mistakes is part of learning and that effort leads to improvement.

Hidden Open Thread 415.5

Astral Codex Ten • 412 implied HN points • 08 Jan 26
🎭️ Culture Science
  1. This entry is a paid, subscriber-only post titled "Hidden Open Thread 415.5" published on Jan 08, 2026.
  2. The page requires subscribing or signing in to view the full content and provides direct subscribe and sign-in links.
  3. The header shows small engagement numbers (6, 184, 1) and includes previous/next navigation, indicating it's part of a series with some interaction.

Hidden Open Thread 417.5

Astral Codex Ten • 275 implied HN points • 22 Jan 26
🎭️ Culture Science
  1. The content is behind a paywall and only available to paid subscribers, so you must subscribe or sign in to read it.
  2. This entry is part of a numbered "Hidden Open Thread" series (417.5) and is dated January 22, 2026, indicating ongoing, periodically posted material.
  3. The page displays subscription and sign-in prompts along with sharing options, showing the platform emphasizes paid access while still encouraging social sharing.

Hidden Open Thread 414.5

Astral Codex Ten • 412 implied HN points • 02 Jan 26
🎭️ Culture Science
  1. The post is behind a paywall and accessible only to paid subscribers.
  2. You can either subscribe or sign in to gain access to the content.
  3. It's dated Jan 02, 2026 and labeled Hidden Open Thread 414.5, showing it's part of a numbered series for subscribers.

Upcoming Podcast: What Should I Ask Virologist and Former CDC Director Robert Redfield?

The DisInformation Chronicle • 145 implied HN points • 24 Jan 26
🎙 Podcasts Science
  1. Former CDC director and virologist Robert Redfield will be the podcast guest to talk about his experiences with HIV and COVID, and to discuss his new book on infectious diseases and vaccines.
  2. Listeners are asked to submit questions in the comments, with paid subscribers encouraged to contribute so their questions can be asked on the show.
  3. The interview will be posted on the podcast’s YouTube channel and could attract wider media attention, so subscribing to the channel is recommended.

DisInformation Chronicle Podcast with NIH Director Jay Bhattacharya

The DisInformation Chronicle • 290 implied HN points • 31 Dec 25
🎙 Podcasts Science
  1. A new podcast will interview interesting, smart thinkers and plans to release new episodes about twice a month at first.
  2. The first episode features NIH Director Jay Bhattacharya discussing his move from Stanford professor to the government role that manages a huge chunk of biomedical research funding.
  3. Future guests will be announced ahead of time so paid subscribers can suggest questions, and listeners are invited to suggest guests and consider subscribing.

Gentle Math for Meditators: Vibration

Superb Owl • 6044 implied HN points • 23 Feb 25
🏥 Health & Wellness Science
  1. Everything around us vibrates, and our experiences—like thoughts and feelings—are made up of different vibrations. Understanding this can help us better describe our mental states.
  2. Waves and circles are key concepts in understanding how vibrations work. These shapes help us visualize and relate to how things move and behave in cycles.
  3. We can create different sounds and movements by combining waves. Each wave has its own properties, like size and speed, and by mixing them, we can create complex patterns like music.

Satya Nadella and the three stages of scientific truth

Marcus on AI • 8023 implied HN points • 23 Nov 24
🕹 Technology Science
  1. New ideas in science often face resistance at first. People may ridicule them before they accept the change.
  2. Scaling laws in deep learning may not last forever. This suggests that other methods may be needed to advance technology.
  3. Many tech leaders are now discussing the limits of scaling laws, showing a shift in thinking towards exploring new approaches.

The Slop School of Internet Success and other lies about cyberspace

Experimental History • 19425 implied HN points • 16 Jan 24
🎭️ Culture Science
  1. Making a living on the internet doesn't have to involve creating 'slop' content like clickbait or scams.
  2. Success online can come from creating honest, original, and interesting content that people genuinely enjoy and share.
  3. Supporting creators financially for content you enjoy can help create a better internet ecosystem and encourage more quality content.

15 Things I Know

Photon-Lines Substack • 278 implied HN points • 11 Jan 26
📚 Literature Science
  1. Use lots of different mental models and a healthy skepticism so you can spot hidden consequences, avoid bias, and make better decisions.
  2. Focus on creating real value and building scalable assets or systems that free your time, instead of chasing flashy consumption or short-term fixes.
  3. Small choices, daily routines, and stable human relationships shape outcomes more than grand plans; steady effort, empathy, and attention to detail build resilience and healing.

Your December Questions, Answered (1 of 2)

Singal-Minded • 227 implied HN points • 05 Jan 26
🎭️ Culture Science
  1. Most of the time when we think we’re right it’s more luck than careful, independent reasoning. We know so little and rely on experts, so humility is the sensible stance.
  2. Studies suggest many kids with childhood-onset gender dysphoria who didn’t socially or medically transition later accept their sex, but that research doesn’t automatically apply to adolescents who come out later. Adolescent-onset appears to be a new and poorly studied presentation, especially in the U.S., so long-term outcomes are uncertain.
  3. Some activists and clinicians have made strong causal claims (for example, that kids will die without immediate treatment) that aren’t well supported and can be harmful or self-fulfilling. Because of this uncertainty, caution and better research are needed before making broad medical or policy decisions.

Lead pipes are dangerous? Make 'em mandatory

Experimental History • 7173 implied HN points • 05 Nov 24
🎭️ Culture Science
  1. Lead pipes can poison people, and they have been used for thousands of years despite the dangers. People often realize this every few decades and push for laws to require lead pipes.
  2. Prominent figures like Ronald Reagan sought astrological advice from advisers like Nancy Reagan's astrologer, showing how beliefs in astrology influenced important decisions.
  3. There's a trend of creating similar movies at the same time, known as 'twin films,' where studios release films with similar themes or ideas around the same time, sometimes by coincidence or for profit.

Aporia gets a hit piece in the Guardian

ideassleepfuriously • 2122 implied HN points • 01 Feb 24
📰 News Science
  1. The article criticizes a hit piece on Aporia Magazine by The Guardian for associating the magazine with scientific racism and attacking anti-woke activist Chris Rufo.
  2. The piece points out the tactic of using experts to lend authority to playground insults, such as labeling Aporia as 'seriously nasty' and 'scientific racist'.
  3. The article highlights the tactic of quoting out of context, like criticizing statements about racial differences in intelligence, without actually refuting the claims.

Is AI Over-Hyped?

Fake Noûs • 436 implied HN points • 06 Dec 25
🕹 Technology Science
  1. AI is probably over-hyped — so many extreme claims make it unlikely we're underestimating its importance.
  2. History shows dramatic tech predictions often miss the mark. Real innovations change lives but usually in unexpected ways, and current AI has been helpful without being transformative for most people.
  3. Current large language models learn from text patterns and lack real-world understanding, so they are unlikely by themselves to solve the deepest scientific problems or produce genuinely new insights.

Crossrail 2 ...and a big pile of rubbish

Odds and Ends of History • 469 implied HN points • 08 Dec 25
🕹 Technology Science
  1. The London Assembly wants the Mayor to restart planning for HS2 and is looking into Crossrail 2 construction updates.
  2. There is a big pile of rubbish in Oxfordshire causing concern and discussions about local waste management.
  3. A new proposal for national laboratories aims to innovate and create breakthrough technologies in the UK.

Does the flame of genius burn past 30?

The Common Reader • 4181 implied HN points • 31 Jan 25
🎭️ Culture Science
  1. Genius can continue to shine bright after age 30, not just in youth. Many inventors and artists create amazing work later in life too.
  2. The age at which people achieve great things has changed over time, often due to the increasing complexity of knowledge in various fields.
  3. Not all talent comes from young people. Many famous poets and thinkers made their best contributions after they turned fifty.

At least five interesting things for the middle of your week (#29)

Noahpinion • 10588 implied HN points • 28 Feb 24
🏥 Health & Wellness Science
  1. AI might help restore the middle class by narrowing the productivity gap between high-skilled and low-skilled workers.
  2. Americans can still afford food, with spending on groceries remaining steady while restaurant spending has increased.
  3. Native Americans in Canada are involved in urban development and industry, showing a potential avenue for economic growth and modernity.

What I Read This Week...

chamathreads • 1434 implied HN points • 02 Feb 24
📰 News Science
  1. Congress's budget estimates can't be trusted
  2. Elon Musk's Neuralink implanted its first brain device
  3. Some children transitioning genders are de-transitioning back

Not by Bread Alone

Glenn Loury • 1983 implied HN points • 07 Jan 24
🚌 Education Science
  1. Social capital is crucial in understanding persistent racial inequality.
  2. Our social reality significantly influences economic and social prospects.
  3. In addressing racial disparities, we need a broader sense of common identity and inclusion.

More Misleading News

David Friedman’s Substack • 251 implied HN points • 17 Dec 25
📰 News Science
  1. Headlines often exaggerate or simplify stories, turning speculative or partial findings into sensational claims that overstate the evidence.
  2. Speculative wording and single-data examples aren't proof; readers should look for context, source data, and alternative explanations before treating a claim as fact.
  3. Early reports and headlines can change as evidence is confirmed or disproven, so initial impressions — like naming a 'person of interest' — aren't always accurate.

Should Israel Pardon Bibi? The AI Cure for Deafness. Plus. . . 

Common Sense with Bari Weiss • 306 implied HN points • 02 Dec 25
📰 News Science
  1. Netanyahu's formal pardon request has split Israel: some see a pardon as a way to heal the nation, while others view it as a dangerous blow to the rule of law.
  2. Recent Trump-linked lawfare efforts are backfiring because inexperienced prosecutors were disqualified, delaying hearings and weakening the cases they were meant to press.
  3. Rapid advances in AI and gene editing are reshaping medicine and ethics — they could make deafness rare and force society to decide whether editing embryos to prevent disease is a moral duty or a slide toward eugenics.

RKUL: Time Well Spent, 1/1/2026

Razib Khan's Unsupervised Learning • 154 implied HN points • 01 Jan 26
🎭️ Culture Science
  1. Read a few rigorous interdisciplinary books this year; they are a small, high-value way to learn durable ways of thinking about science, history, and culture.
  2. Political activism is reshaping academic norms and sometimes sidelines traditional methods like philology; the worth of scholarship should rest on the usefulness of its methods and insights, not scholars' personal politics.
  3. New ancient DNA and genomics studies are steadily sharpening our view of human history by revealing deep regional roots, admixture, and selection, but in some regions more modern samples give diminishing returns so careful interpretation matters.

Americans to Celebrate: The Prophet of the Atomic Age

Common Sense with Bari Weiss • 338 implied HN points • 24 Nov 25
💾 History Science
  1. John von Neumann was an extraordinarily brilliant Hungarian-born mathematician who invented game theory and helped shape America’s nuclear strategy.
  2. He warned that the technologies he helped create could threaten humanity and thought we were entering a rapidly maturing crisis.
  3. In the 1950s he predicted that military advances, early signs of global warming, and growing resource demands would make the coming decades dangerously unstable.

🧬 RFK Jr.’s dumb war on mRNA vaccines and America’s medical future

Faster, Please! • 1096 implied HN points • 06 Aug 25
🏥 Health Politics Science
  1. The U.S. is stepping back from mRNA vaccine development, which could harm future medical advancements. This shift may send a negative message about the country's commitment to science.
  2. Robert F. Kennedy Jr. has canceled significant funding for mRNA research, which some scientists believe is important for fighting diseases like cancer. This decision is seen as anti-science by many.
  3. With other countries like China investing heavily in biotechnological innovation, America risks losing its leadership in this crucial field. A retreat from science can lead to lost opportunities and lives.

Empedocles

Classical Wisdom • 2279 implied HN points • 12 May 23
📖 Philosophy Science
  1. Empedocles was a philosopher known for his belief in the four elements and the concept of a conscious universe.
  2. Empedocles believed in the forces of Love and Strife as the key elements in the interaction of the four worldly elements.
  3. Empedocles made significant contributions to early scientific testing, such as proving the existence of air using a water clock.

LLMs Die Every Time You Close the Chat Window

The Algorithmic Bridge • 997 implied HN points • 18 Jul 25
🕹 Technology Science
  1. When you close a chat window with an AI, it forgets everything, like it never existed. This means that every time you reopen it, it's like starting from scratch.
  2. Humans experience memory and consciousness differently; when we sleep, we retain our memories and essence, while LLMs lose everything overnight.
  3. The mystery of dreams and consciousness in humans is still a big question, but it's clear that the way we perceive our identity is different from how AI operates.