The hottest Evolution Substack posts right now

And their main takeaways
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Top Technology Topics

Complexity Thoughts: Issue #46

Complexity Thoughts • 259 implied HN points • 28 Oct 24
🔬 Science Ecology Evolution Neuroscience Human behavior Complex Systems
  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.

Sex in Biology Signature Campaign

Heterodox STEM • 156 implied HN points • 21 Feb 25
🔬 Science Biology Evolution Ecology Genetics Research
  1. Some biology societies have stated that sex is not simply male or female, which has caused confusion.
  2. A group of biologists has written a letter saying that sex should actually be defined by gamete type, meaning there are two sexes.
  3. They are asking other biologists to sign this letter to support their view and clarify the definition of sex.

The Dark Side of Desire

Rob Henderson's Newsletter • 3087 implied HN points • 18 May 25
🎭️ Culture Dating Psychology Relationships Sociology Evolution
  1. Women can sometimes be attracted to 'bad boys' or violent men due to evolutionary instincts. It's thought that women may view these traits as indicators of strength, which could help protect their own offspring.
  2. Similarities in education, political beliefs, and values are key factors in choosing romantic partners. People generally gravitate towards those who share common backgrounds and life goals.
  3. Improving physical health and social skills can boost attractiveness. Taking care of yourself in terms of grooming and fitness, along with building social connections, can make a big difference in dating.

Mechanisms too simple for humans to design

Telescopic Turnip • 274 implied HN points • 22 Jan 25
🔬 Science Biology Evolution Genetics Technology Artificial Intelligence
  1. Living organisms, like butterflies and bacteria, are incredibly complex, yet humans struggle to replicate them fully because they are surprisingly simple in construction. It's like trying to build a working insect but only using a few basic parts.
  2. The information contained in the genomes of living beings is often much less than what we assume. For example, the human genome contains less useful information than what fits on a CD, showcasing how nature efficiently packs information.
  3. Natural evolution leads to a balance where simpler designs can survive better, while human-made technologies often have complex specifications and high error rates. This means some amazing designs in nature might be too bizarre for humans to create intentionally.

We were selected: tracing what humans were made for

Razib Khan's Unsupervised Learning • 783 implied HN points • 30 Dec 24
🔬 Science Genetics Evolution Anthropology
  1. Ancient DNA research has greatly improved our understanding of human evolution. Scientists can now study our genetic history and how humans have adapted over thousands of years.
  2. New techniques allow researchers to see how natural selection has shaped our traits, like skin color and immune response. This gives insight into why certain characteristics are more common in different populations.
  3. The findings show that our physical traits have changed over time due to varying environmental pressures and lifestyles. This helps explain how humans have managed to survive and thrive in diverse habitats.
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The other man: Neanderthal findings test our power of imagination

Razib Khan's Unsupervised Learning • 686 implied HN points • 01 Jan 25
🔬 Science Genetics Anthropology Paleontology Evolution History
  1. Neanderthals were more diverse than previously thought, similar to modern humans. Recent DNA findings show that they had unique social behaviors and were genetically distinct from their neighbors.
  2. The ancient DNA era has rapidly changed our understanding of human prehistory. Discoveries from ancient genomes have revealed new insights into our ancestors and how they interacted with Neanderthals.
  3. A notable finding is the discovery of a Neanderthal named Thorin, who lived in isolation for thousands of years. This suggests that Neanderthals had unique ways of life that are very different from modern humans.

Complexity Thoughts: Issue #45

Complexity Thoughts • 139 implied HN points • 11 Oct 24
🔬 Science Evolution Artificial Intelligence Neuroscience Complex Systems
  1. New ideas in network science can help understand complex systems better. This approach looks at how systems behave over time, rather than just focusing on stable points.
  2. The evolution of multicellular organisms has led to many new species and ecosystems. Key innovations in multicellularity help organisms adapt and thrive in different environments.
  3. Research shows that convolutional neural networks (CNNs) face limits in recognizing patterns. This limitation is linked to the complexity of the data they're trained on, raising questions about their reliability.

What Progress Has There Been in Industrial Robots?

Construction Physics • 18999 implied HN points • 10 Jan 24
🕹 Technology Robotics Industrial Cost Performance Evolution
  1. Industrial robots have become more cost-effective over time, making them more accessible for various applications.
  2. Advances in industrial robots have led to significant improvements in precision and smooth, continuous motion capabilities.
  3. There has been a trend towards standard robotic architectures, with modern robots primarily consisting of robotic arms with electric drives and servo motors.

Gene-environment interactions: ubiquitous yet undetectable

The Infinitesimal • 359 implied HN points • 21 Aug 24
🔬 Science Genetics Health Environment Statistics Evolution
  1. Gene-environment interactions (GxE) are common but hard to identify in humans. They show how genetic traits can change in different environments, affecting how we understand traits like obesity or education.
  2. There are different models to explain how genes and environments work together. Some models show that environments can amplify or change the effects of multiple genetic variants on traits.
  3. Research has found that environmental factors, like socioeconomic status or education quality, can significantly influence how genetic variations are expressed, meaning genetics alone doesn't tell the whole story about traits.

Pikas Hit the Trail

Street Smart Naturalist: Explorations of the Urban Kind • 399 implied HN points • 08 Aug 24
🔬 Science Biology Ecology Evolution Climate Biodiversity
  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.

If langurs can drink seawater, can humans do so as well?

Trevor Klee’s Newsletter • 895 implied HN points • 14 Nov 24
🔬 Science Biology Zoology Evolution Physiology Genetics
  1. Cat Ba langurs can drink seawater and survive in dry conditions due to their diet and unique adaptations. They mainly get water from the leaves they eat, which helps them thrive on an isolated island.
  2. Humans cannot drink seawater without serious health issues. Consuming saltwater leads to dehydration because our bodies can't remove the excess salt fast enough.
  3. Research suggests that Cat Ba langurs have special genetic traits that allow them to manage salt and calcium better than most mammals. This helps them live in their harsh environment.

Science giveth and science taketh away

Razib Khan's Unsupervised Learning • 366 implied HN points • 17 Dec 24
🔬 Science Evolution Genetics Mathematics Natural History
  1. Science has advanced a lot since Darwin's time, but we often miss the wonder and excitement that comes with these discoveries. It seems like people today are less amazed by scientific progress than they used to be.
  2. Darwin proposed that evolution happens through natural selection, but he didn’t fully explain how traits are passed down. Later scientists combined genetics with evolution to better understand how traits vary across generations.
  3. Today, understanding evolution requires recognizing four main forces: mutation, migration, selection, and drift. These forces shape the genetic diversity that fuels evolution.

"But then I realized horses are just men-extenders"

Razib Khan's Unsupervised Learning • 394 implied HN points • 05 Dec 24
💾 History Civilization Technology Culture Evolution Military
  1. Horses played a key role in advancing human civilization by providing a new source of power for farming, transport, and warfare. They helped people accomplish tasks more efficiently and laid the groundwork for modern advancements.
  2. The relationship between humans and horses lasted for thousands of years and influenced societal structures, including the development of patriarchal societies. As horses were integrated into daily life, they changed the nature of work for men and women differently.
  3. Even though technology has replaced horses in many ways, their historical importance is profound. They were our first major means of boosting productivity and transforming the way humans lived and worked.

The Smoke Detector Principle: The Evolutionary Advantage of Overreaction

Rob Henderson's Newsletter • 1344 implied HN points • 14 Jan 25
🏥 Health & Wellness Mental health Anxiety Depression Psychology Evolution
  1. Anxiety is more common in wealthy countries, particularly among educated people with white-collar jobs. It seems to be a problem that affects many people today.
  2. Clinical depression rates have reached a new high, especially among young adults and college students. Understanding depression can be important since it greatly affects people's lives.
  3. Both anxiety and depression have seen significant increases over the past decade. It's crucial to discuss and learn more about these issues to find better ways to cope.

Mitochondria Are Alive

Asimov Press • 735 implied HN points • 08 Nov 24
🔬 Science Biology Evolution Molecular Biology Genetics
  1. Mitochondria are more than just cell parts; they are alive and have their own functions. They carry their own DNA and replicate just like bacteria.
  2. Thinking of mitochondria as living beings can help us understand their role better in our health and in biology. Many diseases are linked to problems with mitochondria.
  3. Mitochondria can interact with their environment and even move between cells, which shows they can adapt and play important roles in complex biological systems.

Some notes on assortative mating

The Infinitesimal • 339 implied HN points • 23 Jul 24
🔬 Science Genetics Evolution Statistics Heritability
  1. Assortative mating happens when partners select each other based on certain traits, like height or education, making their children more genetically similar over generations.
  2. This type of mating can lead to increased genetic variance in the population, but does not change the genetic variance within families because the parent's traits balance out among the children.
  3. When estimating heritability or variance, it’s important to use the right approach. Population-level estimates can be misleading if based on family data, and vice versa.

The Economics of Altruism

David Friedman’s Substack • 179 implied HN points • 06 Jan 25
📖 Philosophy Ethics Altruism Economics Evolution Psychology
  1. Altruism can be understood in economic terms by suggesting that people might care about others' well-being as part of their own happiness. This means that helping others can also benefit the helper.
  2. The 'Rotten Kid Theorem' explains that even selfish behavior in children can lead them to act in ways that are good for everyone, as they understand their actions affect their parent's support.
  3. Altruism may have evolved as a way to help groups survive better. When one person helps others, it can create better cooperation for the whole group, making it more successful over time.

Evolution Explains Polygenic Structure

Astral Codex Ten • 8465 implied HN points • 08 Feb 24
🔬 Science Evolution Genetics Mental health Research
  1. Genes for severe conditions like schizophrenia are likely small in effect and numerous, not large and few.
  2. Evolution would have eliminated genes with large negative effects, leaving only genes with small effects.
  3. The presence of genes with very small effects may be due to various factors like insufficient time for removal or counterbalancing advantages.

Francis Crick Was Misunderstood

Asimov Press • 386 implied HN points • 01 Dec 24
🔬 Science Biology Genetics Molecular Biology Evolution Research
  1. The Central Dogma explains that information in cells flows mainly from DNA to RNA to proteins, but it's more complex than just that. It actually includes several other information transfers that many people don't realize.
  2. Francis Crick named his idea the Central Dogma, but it’s not an unchangeable belief; it's a scientific hypothesis based on evidence. Even though people often misunderstand it, he believed in testing ideas with experiments.
  3. Recent discoveries show that some processes in biology may seem to contradict the Central Dogma, but they don't actually break its rules. The essential point is that information can only flow from nucleic acids to proteins, never the other way around.

Graphic Content & Cyber Monday: the year’s deepest discount

Razib Khan's Unsupervised Learning • 274 implied HN points • 02 Dec 24
🔬 Science Genetics Population History Anthropology Evolution
  1. Cyber Monday is a great opportunity to get a good deal on subscriptions, like locking in an annual rate of $50.
  2. Population trends show that regions like South Asia and Africa will have significant growth, changing global dynamics in the coming decades.
  3. Ancient DNA research is revealing new insights about human evolution and genetics, showing how our ancestors adapted to challenges over time.

An Investigation into Species HS01

Contemplations on the Tree of Woe • 1108 implied HN points • 20 Dec 24
🎭️ Culture Society Identity Psychology Evolution Norms Politics
  1. Drones are being spotted in major U.S. cities, but there's a lot of confusion about their purpose. Some people think they could be military drones from other countries, while the government insists they are just civilian drones.
  2. A strange theory suggests that aliens are invading Earth, and they'll reveal themselves in 2025. This idea comes from a researcher studying our species, who claims aliens are worried about our civilization.
  3. The reproductive patterns of humans show a big divide. While some populations are rapidly growing, others are declining due to cultural and social changes that discourage having children.

Diffusion Models are Evolutionary Algorithms

Gonzo ML • 441 implied HN points • 09 Nov 24
🕹 Technology AI Algorithms Evolution Machine Learning Data science
  1. Diffusion models and evolutionary algorithms both involve changing data over time through processes like selection and mutation, which can lead to new and improved results.
  2. The new algorithm called Diffusion Evolution can find multiple good solutions at once, unlike traditional methods that often focus on one single best solution.
  3. There are exciting connections between learning and evolution, hinting that they may fundamentally operate in similar ways, which opens up many questions about future AI developments.

No, evolutionary theory does not justify your worst political nightmare

Optimally Irrational • 79 implied HN points • 06 Jan 25
📖 Philosophy Evolution Psychology Social theory Politics Ethics
  1. Evolutionary theory doesn't support any specific political ideology, even though some people misuse it for their own agendas. It's important to focus on the science itself without letting politics influence our understanding.
  2. While evolution can seem harsh, it also highlights the importance of cooperation. Our ability to work together is key to our success as a species, not just competition.
  3. Misunderstanding evolutionary ideas can lead to false claims about human behavior, such as justifying sexism or selfishness. Recognizing the facts of evolution can help us build better societies that account for human nature.

What Makes Men and Women Different?

Uncharted Territories • 2162 implied HN points • 04 Sep 23
🔬 Science Evolution Gender Physiology Psychology Sexuality
  1. Women and men think differently due to biological differences like having a uterus, leading to significant psychological variations.
  2. Men and women face different stakes in relationships and reproduction, with women having higher commitments and limitations due to their reproductive capacity.
  3. Evolutionary factors have shaped men to compete for access to females, leading to traits like dominance, aggression, physical strength, and risk-taking behavior.

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 Evolution Biology Psychology Anthropology Human behavior
  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.

Evolution and Our Obsession with True Crime

The Garden of Forking Paths • 2004 implied HN points • 19 May 23
🎭️ Culture Evolution True Crime Psychology History Sociology
  1. True crime has been a longstanding part of human culture, dating back centuries.
  2. Our obsession with true crime may stem from our evolutionary history and the way our minds are wired for survival.
  3. Engaging with true crime stories allows us to simulate dangerous situations and hone our ability to detect and avoid threats.

In cosmology, all our errors lean the same way. The implications are... interesting

The Egg And The Rock • 1650 implied HN points • 09 May 23
🔬 Science Cosmology Astronomy Evolution Theory Research
  1. In cosmology, our errors consistently lead us to underestimate the size and complexity of the universe.
  2. A major flaw in our approach may stem from an unexamined assumption underlying our theories.
  3. Shifting from a universe-as-rock paradigm to a universe-as-egg paradigm may help us better understand the universe's complexity.

A New Literature

Software Design: Tidy First? • 1988 implied HN points • 11 Jan 24
📚 Literature Writing Model Content creation Evolution Interactivity
  1. The new companion model called Rent-a-Kent combines blog posts with a trained language model to promote reader interaction.
  2. Creating the companion model felt more like programming than writing a blog post, with less control over the model's responses.
  3. This new form of literature allows for immediate questions and comments without the delay of waiting for replies, but may lack the human connection found in traditional comment sections.

Hyper-Darwinian Wars

Holodoxa • 259 implied HN points • 28 May 24
🏥 Health & Wellness Cancer Treatment Evolution Genetics
  1. Cancer is genetic in origin, making treatment a relentless struggle against a protean foe with evolutionary possibilities.
  2. Precision treatment options are emerging as complements or alternatives to traditional cancer treatments, offering hope in the battle against cancer evolution.
  3. The challenges of drug resistance, tumor heterogeneity, cancer stem cells, and the tumor microenvironment highlight the complexity of cancer and underscore the need for innovative, targeted treatment strategies.

The Goldilocks zone between inbreeding and outbreeding

ideassleepfuriously • 884 implied HN points • 10 Jan 24
🔬 Science Genetics Evolution Human biology Psychology Fertility
  1. The risk of producing abnormal embryos is highest in siblings, lower in first cousins, and lowest in third or fourth cousins.
  2. Inbreeding can lead to shared defective alleles and recessive disorders, causing inbreeding depression.
  3. Outbreeding can lead to genetic incompatibilities and higher rates of miscarriage, causing outbreeding depression.

Debunking Pseudoscience: ‘Multimodal Models of Animal Sex’

Reality's Last Stand • 1434 implied HN points • 06 Mar 23
🔬 Science Biology Gender Research Evolution Critique
  1. The paper debunks the traditional binary model of biological sex by proposing a multimodal model.
  2. Current efforts in academia are influencing scientific research on sex by incorporating political motivations in the study.
  3. The study fails to provide evidence for more than two sexes and is criticized for misinterpreting sex differences in genetics, endocrinology, morphology, and behavior.

Discussion with Steve Stewart-Williams on evolutionary psychology

Optimally Irrational • 63 implied HN points • 18 Dec 24
🚌 Education Psychology Evolution Behavior Research Cognition
  1. Evolutionary psychology studies behavior based on human evolution. It looks for reasons why we think and act the way we do by using ideas from evolutionary biology.
  2. While some critics argue that evolutionary psychology can lead to over-simplified stories about behavior, it still provides useful insights into human nature and basic drives.
  3. Understanding how evolution shapes our thoughts and actions can help us improve mental health and make better decisions in life and relationships.

The First Humans in Europe

Grey Goose Chronicles • 1257 implied HN points • 23 Jul 23
🔬 Science Archaeology Evolution Genetics
  1. Evidence suggests that the earliest human ancestors in Europe evolved in Europe before eventually moving to Africa.
  2. The arrival of different human species in Europe can be traced through archaeological findings and genetic studies.
  3. Neanderthals existed in Europe for a long time, and the arrival of modern humans led to significant changes and interactions.