The hottest Biology Substack posts right now

And their main takeaways
Category
Top Science Topics

A conversation with Claude

Noahpinion • 12529 implied HN points • 22 Mar 26
🔬 Science Biology
  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.

Going Founder Mode On Cancer

The Century of Biology • 2387 implied HN points • 18 Jan 26
🔬 Science Biology
  1. A founder‑mode, information‑maximalist approach — exhaustive documentation, frequent advanced diagnostics, and a ladder of personalized treatment options — can enable faster, creative decisions and in this case helped drive the cancer into remission.
  2. Even with money and motivation, practical barriers in hospitals, IRBs, regulators, and the high cost of drug development make access to tissue, cutting‑edge diagnostics, and experimental therapies very hard to obtain and scale.
  3. Emerging platform technologies like single‑cell sequencing, neoantigen vaccines, radioligand therapies, personalized CRISPR and engineered cell therapies make truly individualized cancer care possible, but today they’re expensive and unevenly distributed and will need new regulatory and manufacturing models to become broadly available.

AI, Cybernetics, and Complexity: unpacking the 2024 Nobel Prizes

Complexity Thoughts • 319 implied HN points • 14 Oct 24
🔬 Science Biology
  1. The 2024 Nobel Prizes recognized important advances in AI, but these discoveries are also deeply connected to complex systems. This shows that complexity science is becoming a more accepted area in high-level research.
  2. Understanding complex systems requires looking beyond traditional boundaries of science. The future of breakthroughs may rely on merging different scientific fields and using interdisciplinary approaches.
  3. Success in tackling complex challenges, like climate change and health issues, will need both detailed analysis of parts and a broader view of systems. Researchers must balance reductionist methods with insights from complexity science.

Contra Skolnick On Schizophrenia Microbes

Astral Codex Ten • 16518 implied HN points • 30 Jun 25
🏥 Health Politics Biology
  1. Schizophrenia is often thought to be genetic, but studies show the link is more complex than just genetics alone. This means family history is a factor, but it's not the whole story.
  2. Twin studies indicate that if one twin has schizophrenia, there’s a 30-40% chance the other twin will too, which can support the idea of many genes influencing the condition.
  3. While some scientists argue that gut bacteria might cause schizophrenia, the evidence linking specific gut microbes to the disorder remains unclear and doesn't explain how it develops over time.

The Metabolic Theory of Intelligence

Anima Mundi • 206 implied HN points • 20 Feb 26
đź“– Philosophy Biology
  1. Thinking is like digestion: intelligence is a metabolic process that consumes and transforms energy rather than just manipulating symbols.
  2. The long-standing metaphor of the mind as a computer has driven progress but is fundamentally incomplete and can lead us astray if we treat cognition only as information processing.
  3. Reframing minds as metabolic and even "solar-powered" shifts how we should understand and build human and artificial intelligence, putting energy flows and bodily constraints at the center of design and explanation.
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A Brief History of Xenopus

Asimov Press • 361 implied HN points • 09 Feb 26
🔬 Science Biology
  1. Xenopus frogs became a lab staple after their eggs were used as a fast, reusable pregnancy test, which flooded research centers with animals and made them easy-to-use model organisms.
  2. Their large, manipulable eggs and cell-free egg extracts let scientists probe development and cell biology directly, producing landmark results like the organizer graft experiments, discoveries about the cell cycle and spindle assembly, and the first cloning from an adult cell.
  3. Xenopus laevis's tetraploid genome made genetics difficult, so researchers turned to the diploid X. tropicalis and later genetic tools; despite those complications, both species remain important models for developmental biology, drug testing, and other experiments.

Genomic prediction of IQ is modern snake oil

The Infinitesimal • 1298 implied HN points • 06 Jul 24
🔬 Science Biology
  1. Genetic tests claiming to predict IQ are not reliable. They often rely on complex methods that mostly just lead to guesswork.
  2. The accuracy of these genetic predictions is very low, explaining only a tiny fraction of variations in IQ scores. In fact, other factors like age and social environment play a much bigger role.
  3. Many of these predictions confuse people about how genetics really work. It's important to understand that these scores should be treated more like entertainment than serious assessments.

Making the Vortex Mixer

Asimov Press • 245 implied HN points • 12 Feb 26
🔬 Science Biology
  1. A simple motorized device called the vortex mixer uses a rubber cup and tight orbital motion to create a vortex that quickly mixes liquids in tubes and small vessels.
  2. The inventors combined technical skill and business savvy to prototype, patent, and commercialize the mixer, then improved it with features like touch activation, speed control, and multi-tube heads.
  3. Vortex mixers made mixing faster, cleaner, and less prone to contamination, becoming a ubiquitous and essential tool in modern biology labs.

Pikas Hit the Trail

Street Smart Naturalist: Explorations of the Urban Kind • 399 implied HN points • 08 Aug 24
🔬 Science Biology
  1. Pikas are cute animals that have traveled a long way from Asia to North America over millions of years. They didn't just hop across in one go; it took many generations to spread out.
  2. Pikas have a unique relationship with their parasites, which helps scientists understand their history better. These tiny creatures help tell the story of the pikas and how they adapted over time.
  3. Climate change is a big threat to pikas today. As their homes warm up, they may struggle to find suitable places to live, especially since they can't go any higher into the mountains.

Read Something Wonderful (about Biology)

Asimov Press • 1250 implied HN points • 20 Nov 25
🔬 Science Biology
  1. Curation of essays is valuable because it leads readers to new ideas they might not discover on their own. It's like finding hidden gems on the internet.
  2. The curated list of biology essays is meant for leisurely reading and focuses on timeless insights instead of quick news, helping readers take their time to enjoy and understand the content.
  3. Exploring essays by different authors can expand your knowledge and perspective on biology, making it a rewarding experience to find writers whose work you love.

Using AI To Research The Missing Heritability Post

Astral Codex Ten • 4817 implied HN points • 02 Jul 25
🔬 Science Biology
  1. AI can be really useful for research, especially in complex topics like genetics. It helps to gather and analyze a lot of information quickly.
  2. However, we need to be careful because AI can also provide misleading information. It's important to cross-check facts and not trust everything it says.
  3. Balancing the benefits and risks of AI is key. We should use its tools but also stay critical of the results it produces.

This week: Bacteria anticipate the seasons! Placebos activate the same neurons as anesthesia! And don’t touch radio towers with hot dogs.

Niko McCarty • 79 implied HN points • 07 Sep 24
🔬 Science Biology
  1. Bacteria can sense changes in seasons and adapt to prepare for colder weather. This helps them survive better when temperatures drop.
  2. Placebos work by activating the same brain neurons as pain relief drugs like anesthesia. This shows how our mind can influence our body’s responses.
  3. A fun fact: touching a hot dog to a radio tower can turn it into a speaker. Just a quirky reminder to be careful with food and electronics!

Defending Sex in Missouri

Reality's Last Stand • 2967 implied HN points • 18 Jan 24
🇺🇸 U.S. Politics Biology
  1. Laws should reflect biological facts over politically driven ideologies.
  2. Legislation on sex should be based on robust biological principles for defense against gender ideology.
  3. The Defining SEX Act emphasizes the importance of scientifically accurate definitions of biological sex in law.

We’re entering a golden age of engineering biology

Noahpinion • 16647 implied HN points • 18 Feb 24
🔬 Science Biology
  1. The advancements in deep learning, cost-effective data collection through lab automation, and precision DNA editing with technologies like CRISPR are converging to transform biology from a scientific field to an engineering discipline.
  2. Historically, biology has been challenging due to its immense complexity, requiring costly trial-and-error experiments. However, with current advancements, we are now at a critical point where predictability and engineering in biological systems are becoming a reality.
  3. The decreasing cost of DNA sequencing, breakthroughs in deep learning models for biology, sophisticated lab automation, and precise genetic editing tools like CRISPR are paving the way for a revolutionary era in engineering biology, with vast potential in healthcare, agriculture, and industry.

The mourning of the elephants

Wrong Side of History • 588 implied HN points • 16 Nov 25
🔬 Science Biology
  1. Elephants show deep emotions when they mourn. They have rituals for honoring their dead, like touching the body and covering it with dirt.
  2. Octopuses and cuttlefish are surprisingly smart for invertebrates. Octopuses can solve problems and cuttlefish can count.
  3. Dogs really seem to love their owners more than food. They respond more to praise from people they care about than to treats.

The Penicillin Myth

Asimov Press • 593 implied HN points • 24 Nov 25
🔬 Science Biology
  1. The story of Alexander Fleming discovering penicillin is filled with uncertainty. Scientists have pointed out many inconsistencies in his account, like how he didn't notice the contamination for almost two months after supposedly finding it.
  2. Fleming's famous discovery might not have been as accidental as it seems. Some theories suggest he was actually looking for new antibacterial substances before penicillin came along; this implies he was actively searching for something valuable rather than just stumbling upon it.
  3. There are competing theories for how penicillin was discovered and its implications for science. Whether it was truly an accident or part of a more planned inquiry shows how scientific discoveries can happen through both chance and careful research.

What is Life?

Gonzo ML • 189 implied HN points • 19 Jan 26
🔬 Science Biology
  1. Life can be understood as self-modifying computronium: systems that compute and change themselves are favored because replication gives them dynamic stability and long-term persistence.
  2. Major evolutionary innovations come from symbiogenesis — the merging and hierarchical composition of simpler replicators — which produces reusable, repeated, code-like structures in genomes and bodies.
  3. Toy artificial-life models show replicators naturally emerge as dynamical attractors: after a chaotic start, self-replicating programs take off exponentially, increasing computational activity and leaving traces of nested sub-replicators.

Can we use alpha particle exposures to falsify LNT?

Gordian Knot News • 124 implied HN points • 29 Jan 26
🔬 Science Biology
  1. Observed human data show a clear dose-rate effect: acute high doses increase cancer around 100–300 mSv, while chronic exposures below about 20 mSv/day have not reliably produced cancer even at cumulative doses above 100,000 mSv, which contradicts a simple LNT prediction.
  2. Per unit energy absorbed, radiation produces similar numbers of double strand breaks because damage mainly comes from ROS, but alpha particles deposit energy very locally, creating clustered DSBs that are much more likely to misrepair and cause cancer, so alpha exposures are a strong test of dose–response.
  3. Cancer risk depends on misrepair of closely spaced DSBs and on DNA repair dynamics, so linear damage plus proportional repair does not imply a linear dose–response; models and regulation need to account for dose rate and spatial clustering rather than relying solely on cumulative dose.

The Waiting Game: Past, Present and Future of Indian Genomics

Razib Khan's Unsupervised Learning • 343 implied HN points • 11 Dec 25
🔬 Science Biology
  1. India has a rich and diverse history, being central to many cultural developments, including the spread of Buddhism and the evolution of various languages and religions. This diversity is reflected in its population, languages, and traditions.
  2. Genomic studies reveal that the people of India have complex genetic backgrounds, including influences from ancient populations and migrations over thousands of years, showcasing both indigenous roots and connections to other global regions.
  3. Despite advancements in genomics in other parts of the world, India has seen limited progress in retrieving ancient DNA, which hinders deeper understanding of its historical populations and transformations.

What Makes an Experiment Beautiful?

Asimov Press • 522 implied HN points • 10 Nov 25
🔬 Science Biology
  1. A beautiful experiment is efficient and clever, showing that you can get more useful information from it than the effort put in. This idea is not just about being smart; it's also about designing experiments that yield significant results.
  2. The qualities that make an experiment beautiful include clarity, simplicity, and decisiveness. A good experiment should be easy to understand and should clearly show the results or answers it seeks.
  3. Historically, the appreciation of experiments has shifted. In the past, the focus was on revealing nature's beauty, but now it's more about the design and ingenuity behind the experiment itself.

Who Does Polygenic Selection Help?

Astral Codex Ten • 11562 implied HN points • 23 Feb 24
🔬 Science Biology
  1. Polygenic selection can help prevent genetic diseases like schizophrenia by choosing embryos with lower risk during IVF, leading to healthier children
  2. Despite the complex nature of genetic selection, it can have positive effects on individuals and society by preventing diseases and improving overall health outcomes
  3. Analogies like preventing fetal alcohol syndrome through prenatal care or choosing healthier IVF embryos demonstrate the ethical and practical benefits of polygenic selection

Collective Intelligence and Emergence

Solve Cancer in 365 days • 59 implied HN points • 30 Aug 24
🔬 Science Biology
  1. Collective intelligence in biology means that groups of cells work together to solve problems that individuals can't. Each level of organization, like cells and organs, solves specific issues that contribute to the whole.
  2. Emergence happens when the combined actions of simpler parts create complex behaviors. This can be seen in things like how cells coordinate to form organs or how flocks of birds move together.
  3. Understanding collective behaviors in cells could lead to big advancements in medicine. This includes helping treat cancer by changing how cells behave or improving tissue engineering and organ regeneration.

Sweet Child O' Mine

Secretum Secretorum • 378 implied HN points • 19 Nov 25
🔬 Science Biology
  1. Domestication changes animals in ways that seem unrelated at first, like making dogs friendlier and changing their ears. This happens because evolution tinkers with what it already has rather than starting from scratch.
  2. Humans show traits similar to young animals, like being playful and social. This neoteny means we've kept some child-like features as adults, which helped us bond and learn better.
  3. Humans succeeded while Neanderthals didn't because we were better at sharing ideas and learning from each other. Our culture helped us become smarter, not just as individuals, but as a group.

The Power of Limit Thinking

Asimov Press • 515 implied HN points • 06 Nov 25
🔬 Science Biology
  1. Limit Thinking helps us figure out the best possible performance of a system. It focuses on the essential features and gives a clear measure of efficiency.
  2. This way of thinking has driven major improvements in technology, like in engines and information theory, by establishing concrete limits to what can be achieved.
  3. In biology, applying Limit Thinking can lead to new discoveries by helping scientists understand the fundamental processes, even in complex systems.

Animalcules and Their Motors

Asimov Press • 399 implied HN points • 13 Nov 25
🔬 Science Biology
  1. Scientists have made big improvements in cryo-electron microscopy, which helps them see how tiny microbes move by looking at their flagella, or tails. This technique allows researchers to understand the complex structure of these microscopic motors.
  2. Different bacteria have unique adaptations in their flagella to fit their environments. For instance, some microbes can spin their flagella incredibly fast to swim in water, while others, like those in the human gut, have stronger motors to move through thick fluids.
  3. The flagellum is a remarkable molecular machine that assembles itself from many proteins. It works by using protons flowing across the cell membrane, which creates the energy needed to make it spin and help the cell move.

Flight Of The Ultimate Navigator

Everything Is Amazing • 1194 implied HN points • 24 Jul 25
🔬 Science Biology
  1. Arctic terns are amazing birds that fly incredible distances. In a year, they can cover around 59,650 miles, which is like going to the Moon and back several times.
  2. These birds have a natural instinct for navigation. They rely on the sun, stars, and Earth's magnetic field to find their way, even without any training.
  3. To prepare for their long migrations, Arctic terns and other migratory birds change their bodies to store fat and energy needed for the journey. They can drop weight as they travel to fuel their flights.

The origins of power dynamics, or why chimps can't play baseball

The Garden of Forking Paths • 2122 implied HN points • 05 Jul 23
🔬 Science Biology
  1. Humans can throw objects accurately and at high speeds, shaping our modern power dynamics in society.
  2. Our unique shoulder adaptations allow for precise and fast throwing, giving us a competitive advantage over other species.
  3. The ability to use ranged weapons and throw projectiles from a distance has influenced human social structures and power dynamics.

RKUL: Time Well Spent, 11/27/2025

Razib Khan's Unsupervised Learning • 234 implied HN points • 28 Nov 25
🔬 Science Biology
  1. Your time is valuable, so it's better to spend it on meaningful activities instead of wasting it online. Books and knowledge can greatly enrich your life.
  2. James Watson made significant contributions to understanding DNA, and his book 'The Double Helix' gives a unique insight into this scientific journey. It's a great read for anyone interested in genetics.
  3. E. O. Wilson and W. D. Hamilton had different approaches to biology, but both made important discoveries. Their works show the evolution of thought in the field of genetics and how science can help us understand life better.

Links For February 2024

Astral Codex Ten • 7433 implied HN points • 29 Feb 24
🔬 Science Biology
  1. Blind mathematicians often work in geometry and topology, suggesting unique perceptions.
  2. The Basilica of the Holy House in Italy intriguingly ties angelic folklore with historical architecture.
  3. Starting a journey from Seattle and heading east ends in Russia, the first country reached while traversing the Atlantic Ocean.

Bioelectric Signalling and Cellular Communication

Solve Cancer in 365 days • 39 implied HN points • 28 Aug 24
🔬 Science Biology
  1. Bioelectricity is how cells communicate using tiny electrical signals. Think of it as the way cells send messages to each other in the body.
  2. Cells have gate-like structures called ion channels that control the movement of charged particles, creating bioelectric signals. These signals help in many processes such as healing and development.
  3. Manipulating bioelectric signals could potentially change how cells behave, which might lead to new ways to treat diseases like cancer by changing unhealthy cells back to normal ones.

The Possibility of Pikas

Street Smart Naturalist: Explorations of the Urban Kind • 419 implied HN points • 02 May 24
🔬 Science Biology
  1. Pikas are small mammals that usually live in rocky areas at high elevations, but some have been found at lower elevations, like the Columbia River Gorge. These unique habitats help them survive despite the warmer climate.
  2. Researchers found that moss plays an important role for pikas at lower elevations by keeping them cooler and happier. Moss helps create a nice environment for these little creatures as temperatures can often be too hot for them.
  3. Pikas are adapting to their new lower habitats by spending less energy storing food for winter and more time in the shade of trees. This shows they might have the ability to adjust to climate change better than some other animals.

Why Biology and Cancer?

Solve Cancer in 365 days • 39 implied HN points • 27 Aug 24
🏥 Health & Wellness Biology
  1. Aging and illness like cancer are tough realities that many people face in life. There's a strong desire to find better solutions to these problems.
  2. It's important to seek meaning and purpose in life beyond just money and status. Finding something impactful can reignite passion and motivation.
  3. Learning about biology and unconventional approaches to it can open new pathways to understanding health issues. This exploration could lead to breakthroughs in how we view and treat diseases like cancer.