Biology

August 2025

• Aug 26, 2025ExplainersThe Obesity Epidemic: Biology and Environment ExplainedUS obesity tripled in four decades, reaching 42% in the 2017-2018 NHANES survey (published 2020). Explore the biology of why energy regulation fails, the role of the food environment,...21 MIN4.5k

March 2025

• Mar 16, 2025CultureWhat Is Gender? Biology, Psychology, and Identity ExplainedGender is one of the most consequential and contested concepts in modern life. A rigorous guide to the biology, psychology, cross-cultural...19 MIN9.2k

February 2025

• Feb 18, 2025ExplainersHow the Immune System Learns: Memory and VaccinesThe immune system can remember pathogens it has encountered before and respond faster and stronger on re-exposure.16 MIN5.0k

September 2024

• Sep 3, 2024ExplainersUnderstanding the Key Hallmarks of AgingWhy we age explained: the 12 hallmarks of aging, telomeres, epigenetic clocks, sirtuins, rapamycin, caloric restriction, and what longevity science...16 MIN2.8k

August 2024

• Aug 20, 2024ExplainersWhy Do We Age? The Science of Aging and LongevityWhy do we age and die? Explore the biological mechanisms of aging, from telomeres and DNA damage to senescent cells and the hallmarks of aging,...13 MIN6.8k
• Aug 16, 2024ExplainersWhat the Science of Longevity Reveals About Living LongerWhat does longevity research actually support? Understand Blue Zones, the hallmarks of aging, caloric restriction, exercise, sleep, and why most...14 MIN9.7k
• Aug 14, 2024ExplainersThe Immune System: Your Body's Defense MechanismA comprehensive guide to the immune system: innate and adaptive immunity, B and T cells, vaccines and memory, autoimmunity, cancer immunology,...16 MIN5.1k
• Aug 4, 2024ExplainersUnderstanding Genetics: DNA and Heredity BasicsA comprehensive guide to genetics and DNA: from Mendel's pea plant experiments and the discovery of the double helix to CRISPR gene editing and...19 MIN7.9k

July 2024

• Jul 26, 2024ExplainersThe Physiological Changes During ExerciseWhat is actually happening in your muscles, heart, lungs, brain, and cells when you exercise?16 MIN7.2k
• Jul 23, 2024ExplainersWhat Causes Chronic Inflammation: The Root of Modern DiseaseChronic low-grade inflammation underlies heart disease, diabetes, Alzheimer's, cancer, and depression.15 MIN7.3k
• Jul 18, 2024ExplainersFaster Recovery from Illness: Insights into Healing BiologyWhat does the science actually say about recovering faster from illness? Understand the biology of healing: fever, rest, nutrition, hydration, and...16 MIN9.0k
• Jul 12, 2024ExplainersHow the Human Immune System Works: Innate vs. Adaptive ImmunityHow does the immune system actually recognize and fight infections? Understand innate and adaptive immunity, T cells and B cells, antibodies,...13 MIN1.9k
• Jul 11, 2024ExplainersGut Microbiome Functions: Health and DigestionWhat is the gut microbiome and what does it actually do? Understand the science of gut bacteria, the gut-brain axis, how diet shapes the...14 MIN8.5k
• Jul 1, 2024ExplainersThe Science of Pain: Nociception, the Brain, and Chronic PainPain is not simply damage detected by the body, it is a construction of the brain. Understand nociception, the gate control theory, phantom limb...13 MIN6.1k

June 2024

• Jun 19, 2024ExplainersHow Epigenetics Functions: Gene Regulation and ExperienceHow epigenetics works: DNA methylation, histone modification, epigenetic clocks, and whether stress and trauma can be passed to future generations...14 MIN4.4k
• Jun 11, 2024ExplainersHow Cancer Develops: The Biology of Uncontrolled GrowthCancer is not one disease but two hundred, united by a common logic: cells that break free from the constraints evolution built to stop them.15 MIN7.2k
• Jun 8, 2024ExplainersHow Antibiotics Work: Mechanisms and Resistance ExplainedHow do antibiotics work? Understand the mechanisms of different antibiotic classes, why antibiotic resistance is a global health crisis, and what...19 MIN6.0k

February 2024

• Feb 20, 2024ConceptsExploring the Biology of Disgust and Moral PsychologyWhy do we feel disgust? Explore the evolutionary biology of revulsion, Rozin's contamination research, moral dumbfounding, and how disgust shapes...15 MIN6.0k
• Feb 16, 2024ConceptsUnderstanding Night Owls: The Biology of Sleep PatternsBeing a night owl is not laziness or a bad habit. Chronotype is biologically determined, varies enormously between individuals, and shifts...13 MIN7.6k

January 2024

• Jan 24, 2024ConceptsWhat Is Evolutionary Psychology and Its DebatesA rigorous introduction to evolutionary psychology: its intellectual foundations in Cosmides and Tooby, core findings on kin selection and mate...17 MIN8.8k
• Jan 17, 2024ConceptsUnderstanding the Complex Causes of DepressionDepression is not simply low serotonin. Understand the actual science: inflammation, neuroplasticity, the HPA axis, genetics, stress...14 MIN7.5k

June 2022

• Jun 24, 2022ExplainersWhat Is Pharmacology?Pharmacology explained: how drugs move through the body, bind to receptors, and produce effects.15 MIN4.8k
• Jun 11, 2022ConceptsEvolutionary Biology: Concepts and Theories ExplainedEvolutionary biology explained: Darwin's theory of natural selection, the Modern Synthesis, population genetics, speciation, sexual selection,...15 MIN1.8k
• Jun 10, 2022ConceptsEcology: The Science of Life and InterconnectionsA comprehensive guide to ecology: levels of organization, food webs and trophic cascades, keystone species, biodiversity, island biogeography,...12 MIN6.8k