- How did diphtheria kill children before antitoxin treatment existed?
- What did von Behring discover in the blood serum of animals that had survived diphtheria?
- What does it mean that the immune response is 'lendable' between animals?
Infectious Disease
The study, spread, and control of infections.
- How did Ross trace the malaria parasite's path through a mosquito's body to prove transmission?
- What did the miasma theory of malaria claim, and where did that idea originally come from?
- Why did identifying the mosquito as vector make malaria controllable even without understanding the parasite at a molecular level?
- What modern medical treatments trace their lineage back to Finsen's phototherapy?
- What working conditions did Marie and Pierre Curie endure while isolating radium?
- What are Koch's postulates and what four steps did his tuberculosis demonstration establish?
- How did Einstein's equations connect a particle's random drift to molecular collisions, temperature, and viscosity?
- What happened to rats fed a diet of only chemically pure macronutrients?
- Why was it significant that Laveran identified a protozoan, rather than a bacterium, as the cause of a human disease?
- What did Laveran do with his prize money, and why?
- How did scientists study nerve fibre development before Harrison's technique existed?
- What exact method did Harrison use to keep frog embryo tissue alive and observable outside the body?
- What later fields of research trace their foundation back to Harrison's tissue culture technique?
- What did Mechnikov observe in starfish larvae that led him to discover phagocytosis?
- How does Ehrlich's side-chain theory describe the way antibodies recognize invading molecules?
- What surgical techniques did Kocher refine to make thyroid operations safer?
- Why did hydrogen ion concentration need a logarithmic scale rather than a linear one?
- What two physical properties of molecules did van der Waals add to correct the gas equation?
- Which five nucleotide bases did Albrecht Kossel identify inside the cell nucleus?
- How long after Kossel's work did Watson and Crick reveal what the nucleotide bases actually encode?
- How did Salvarsan change the prognosis for someone with syphilis?
- In what sense did Salvarsan establish the principle behind modern pharmacology?
- How did the inheritance pattern of the white-eye trait reveal that it was linked to the X chromosome?
- What did Morgan's discovery prove about the physical nature of genes?
- Why did nineteenth-century thyroid surgery patients sometimes die of violent muscular spasms after their operations?
- How did Henry Dale first extract histamine from ergot fungus rather than from animal tissue?
- What effects did injected histamine produce in experimental animals that resembled anaphylaxis?
- Why does the body sometimes release histamine in error against harmless substances like pollen or peanuts?
- How did Dale's identification of histamine eventually lead to the antihistamines developed in the 1940s?
- Where does coordination chemistry show up in biology and medicine today?
- What are the three stages syphilis progresses through in an untreated patient?
- Why wasn't identifying Treponema pallidum in 1905 enough to prove it caused syphilis?
- How did confirming the bacterial cause of syphilis connect to the use of salvarsan as a treatment?
- How do the semicircular canals of the inner ear detect rotation and orientation?
- How did Robert Bárány use warm and cold water to test the vestibular system?
- What is nystagmus, and how does it reveal brainstem function?
- What did Paul Ehrlich mean by a 'magic bullet' (Zauberkugel) and how did Salvarsan fulfill that idea?
- How did Compound 606 target Treponema pallidum, the bacterium behind syphilis, without simply attacking the whole body?
- How did Ehrlich's targeted-molecule approach shape the drug development that followed, from sulphonamides to penicillin?
- How does tropomyosin physically block myosin from binding to actin in a relaxed muscle?
- What triggers the calcium-driven conformational change that rolls tropomyosin aside during contraction?
- What was known about muscle contraction in 1915 before tropomyosin's regulatory role was fully understood?
- Why did phage therapy survive in Soviet Georgia while falling out of use in the West after antibiotics arrived?
- How is d'Hérelle's century-old discovery being reconsidered today as bacteria grow resistant to antibiotics?
- Why did the 1918 influenza kill healthy young adults at unusually high rates instead of mainly the elderly?
- How did Bordet's complement-fixation test work, and why could it be applied to any antigen-antibody pair?
- How did the Wassermann test, built on Bordet's discovery, become one of the first reliable blood tests for syphilis?
- In what ways did Bordet's mechanistic view of immunity lay groundwork for blood typing and allergy research?
- How do capillaries actively regulate blood flow to match a tissue's metabolic demand?
- Why did Calmette and Guérin cultivate their tuberculosis strain through 230 successive generations before it was safe to use?
- How does an ultracentrifuge use spinning force to reveal the mass of a single protein molecule?
- How much stronger than Earth's gravity were the forces Svedberg's rotor generated, and why was that necessary?
- Why did Fibiger conclude that a parasitic worm found in rat stomach tumours was the cause of cancer?
- What is dementia paralytica and why was it untreatable before the 1920s?
- How did Wagner-Jauregg use malaria to treat neurosyphilis?
- What eventually made fever therapy for neurosyphilis obsolete?
- What clue about hospitalized typhus patients led Nicolle to suspect clothing and skin as the mode of transmission?
- How was the body louse confirmed as the vector responsible for spreading typhus?
- Why did understanding the louse as vector turn typhus from an act of fate into a manageable hygiene problem?
- What did Fleming find on his culture plate when he returned from holiday on 3 September 1928?
- What had to change, chemically and industrially, before penicillin could go from a laboratory curiosity to a mass-produced antibiotic?
- What was the leading theory about beriberi before Eijkman's chicken experiments, and why was it wrong?
- What did Frederick Hopkins's rat feeding experiments show about 'accessory food factors'?
- How can the wavelength shift of scattered light act as a fingerprint for identifying a molecule?
- What is haemin and why does it sit at the core of the haemoglobin molecule?
- What did Fischer's total synthesis of haemin in 1929 actually involve?
- Why did it take Fischer nearly two decades to work out haemin's structure?
- What structural features make haemin a chemically difficult molecule to synthesize?
- Why was Fischer's total synthesis of haemin considered a proof of concept for organic chemistry?
- What kinds of structures became visible for the first time once electron microscopes surpassed optical instruments?
- How did Sherrington explain the coordination of antagonistic muscles during a reflex like a leg flexing?
- What did Edgar Adrian discover about how nerve fibres encode signal strength?
- Why was cutting into the nervous system to see what stopped working an unreliable way to study it?
- How did Sherrington and Adrian's work reframe the neuron as an active computational unit rather than a passive wire?
- What did Phoebus Levene establish about the structural backbone of DNA?
- What caused the aplastic anaemia that killed Marie Curie in 1934?
- How did Marie Curie's death the year before shape the significance of her daughter's prize?
- What experiment did Otto Loewi run on two frog hearts to prove nerve signals are chemical rather than purely electrical?
- What medical treatments eventually grew out of the cyclotron's ability to produce particle beams?
- What is the connection between folic acid and neural tube defects like spina bifida?
- Why was Howard Florey's Oxford team growing penicillin mould in bedpans and milk churns in 1941?
- By what point in 1943 could penicillin output supply the entire Allied armed forces, and how did that change wound treatment in the war?
- Why do thick, myelinated nerve fibres conduct signals so much faster than thin, unmyelinated ones?
- What explains the two-part sensation of a quick sharp 'ouch' followed later by a deeper ache from the same injury?
- How did mapping different nerve fibre types change the development of anaesthesia and pain treatment?
- What is bacterial 'transformation,' and why had it puzzled biochemists for two decades before 1944?
- How did Virtanen's AIV method use acid to keep silage from rotting without ruining its nutritional value?
- Why did preserving fodder through the winter matter so much for wartime Finland specifically?
- What did Muller's findings reveal about the relationship between radiation exposure and heritable genetic damage?
- How did Muller's warnings about X-ray exposure shape later radiation protection standards?
- What made the structures of alkaloids like morphine and strychnine so difficult for nineteenth-century chemists to determine?
- How did Robinson's 1917 synthesis of tropinone in three steps outperform the approaches chemists had used before?
- What experiment led Avery, MacLeod, and McCarty to conclude that DNA, not protein, carries hereditary information in pneumococcal bacteria?
- How was DDT used in wartime and postwar public health campaigns before its risks were understood?
- What method did Walter Hess use to map the functions of the diencephalon in cats?
- What range of bodily functions did Hess's electrode-stimulation experiments reveal were coordinated by this brain region?
- What preventive measures existed for yellow fever before Theiler's 17D vaccine?
- Where does yellow fever still circulate today despite the availability of an effective vaccine?
- Which diseases did Karl F. Meyer research over the course of his career?
- How did Meyer's research on psittacosis lead to modern bird import and quarantine protocols?
- What made the George Williams Hooper Foundation a major center of infectious disease research under Meyer?
- Why was tuberculosis resistant to sulfonamides and penicillin when other bacterial infections responded?
- Why did polio seem to strike children in wealthier, cleaner households more often?
- Why could poliovirus previously only be grown in living nerve tissue, and what problem did that create for vaccine production?
- What did Enders, Weller, and Robbins demonstrate in 1949 about growing poliovirus in non-neural human tissue?
- Why did the Nobel committee award this prize in 1954, before Jonas Salk's vaccine trials had even returned results?
- What happened to the crew of the fishing vessel Lucky Dragon No. 5 after Castle Bravo's fallout reached them?
- What is the 'yellow ferment' that Hugo Theorell studied, and what role does it play in cellular oxidation?
- What did Theorell prove by separating the yellow ferment into a protein and a prosthetic group, then recombining them?
- How much did polio case counts in the United States fall in the years immediately after the vaccine's approval?
- When was polio eventually declared eradicated in the Western hemisphere?
- What medical condition caused Einstein's death, and why did he refuse surgery that might have extended his life?
- What chemical bonds did Alexander Todd map out in synthesizing ATP and related coenzymes?
- Why does understanding the nucleotide linkage matter for both cellular energy transfer and DNA's structure?
- How did Todd's synthetic chemistry lay groundwork for molecular biology before DNA's structure was even known?
- What rocket carried Sputnik 1 into orbit, and why was it originally designed for a different purpose?
- Why did Korolev's team design Sputnik 1 to broadcast a simple radio beep rather than carry scientific instruments?
- Why did Sputnik 1's launch cause such alarm in Washington despite US intelligence tracking Soviet rocketry?
- What strategic fact about satellites did Western newspapers explain to the public after Sputnik's launch?
- Why was Laika, a Moscow stray, chosen over a pampered dog for the Sputnik 2 mission?
- What political deadline forced the Sputnik 2 mission to be assembled in under four weeks?
- How did the Lovell Telescope end up being the only instrument able to track Sputnik's carrier rocket?
- What did Lederberg discover about how bacteria exchange genetic material through conjugation?
- How does bacterial gene swapping via conjugation complicate a strictly Darwinian, gradualist view of evolution?
- What experiment did Medawar run on mice to prove Burnet's theory of acquired immune tolerance?
- What shape did myoglobin turn out to have, and how does that shape let it hold and release oxygen?
- What caused Telstar 1 to go silent just seven months after launch?
- How did this trio's findings become the foundation for understanding anaesthesia and epilepsy?
- What debate about penicillin's structure did Dorothy Hodgkin settle in 1945?
- How did mapping the cholesterol synthesis pathway lead to the development of statins?
- What earlier discovery by Peyton Rous took fifty years to be fully vindicated by later research?
- How did the plaque assay technique developed by Dulbecco and Rubin let researchers count virus particles precisely?
- What basic principle of viral oncology did Dulbecco and Rubin establish about how a virus alters a cell's hereditary programme?
- How did this work on viral cancer in chickens directly enable the discovery of oncogenes in the 1970s?
- What did Charles Huggins discover about the relationship between male sex hormones and prostate cancer growth?
- How did Delbrück's work distinguish random mutation from directed adaptation in bacteria?
- How did an enzyme from Thermus aquaticus enable the polymerase chain reaction (PCR)?
- Why did DNA polymerase need to be heat-stable for Kary Mullis's PCR technique to work?
- How did Julius Axelrod's discovery of noradrenaline re-uptake lead to modern antidepressant drugs?
- Why does blocking a neurotransmitter transporter make that neurotransmitter linger longer in the synapse?
- Why did thalidomide's two mirror-image forms have such different effects on the body?
- What is the R/S notation Vladimir Prelog developed, and why did chemists need it?
- Why does understanding reverse transcriptase matter for treating HIV?
- How were doctors able to image the interior of a living skull before CT scanners existed?
- How did you actually run a program on the Altair 8800 with no keyboard or screen?
- How did a chance reaction between a haemophiliac patient's serum and an Aboriginal blood sample lead to the discovery of the hepatitis B surface antigen?
- How did Gajdusek's work on kuru's slow infectious agent later connect to the discovery of prions and BSE?
- Why did scientists choose to name the newly isolated virus after the Ebola River rather than a nearby village?
- What made the Zaire strain of Ebola so much more lethal than the Sudan strain in the first outbreak?
- How did quarantine alone manage to end the first Ebola outbreak without any available treatment?
- What caused the mysterious pneumonia outbreak among American Legion convention delegates at the Bellevue-Stratford Hotel in 1976?
- How did Joseph McDade eventually identify Legionella pneumophila months after the initial investigation stalled?
- Why was the bacterium able to spread through the hotel's air-conditioning system undetected?
- How widespread is Legionella pneumophila in modern engineered water systems like cooling towers and plumbing?
- What are hypothalamic releasing hormones, and why did it take two rival laboratories nearly two decades to isolate them?
- How did a technique built for endocrinology end up used for cancer markers and drug monitoring?
- What could doctors diagnose after CT scanning that they couldn't diagnose with plain X-rays?
- What kind of people did the Missionaries of Charity focus on serving that other institutions turned away?
- What did independent analyses find about cancer rates near Three Mile Island after the accident?
- How did George Snell's mouse skin-graft experiments lead to the discovery of the major histocompatibility complex?
- Who was the last person to catch smallpox naturally, and what happened to him?
- Why does smallpox remain the only human disease ever deliberately driven to extinction?
- What symptoms led the CDC to flag the five Los Angeles cases described in the June 1981 MMWR report as unusual?
- Why was Pneumocystis carinii pneumonia considered such a rare warning sign in otherwise healthy young men?
- Why was severing the corpus callosum used to treat severe epilepsy in the first place?
- How did the prion hypothesis eventually explain mad cow disease and its human variant?
- Why did identifying the specific retrovirus behind AIDS matter even though it didn't immediately produce a treatment?
- What made peptide synthesis in solution so slow before Merrifield's method?
- How does anchoring a growing peptide chain to a polymer bead simplify washing away unwanted reagents?
- Why were polyclonal antibody mixtures unreliable for research and diagnostics before hybridoma technology?
- Which everyday medical tools, like pregnancy tests, depend on monoclonal antibodies?
- How did the discovery of the LDL receptor pathway lead to the development of statins?
- What did Rita Levi-Montalcini observe when a mouse tumour was implanted near a chick embryo's nervous system?
- What is nerve growth factor and how does it tell developing nerve cells where to grow?
- How did Stanley Cohen's discovery of epidermal growth factor extend the idea of chemical signalling between cells?
- How does supramolecular chemistry mimic what enzymes and antibodies already do in living cells?
- What charge did a Leningrad court bring against Joseph Brodsky in 1964, and what was his defense?
- How did beta-blockers and H2 receptor antagonists change the treatment of heart disease and peptic ulcers?
- What metabolic differences between cancer cells and normal cells did Elion and Hitchings exploit to design their drugs?
- How did Altman's work on ribonuclease P independently point to the same conclusion as Cech's intron studies?
- How did Bishop and Varmus trace the src oncogene back to normal vertebrate cells rather than viral origin?
- How did this reframing of cancer as an internal malfunction change how targeted cancer therapies are designed?
- How does inositol trisphosphate (IP3) mobilise calcium stored inside a cell, and why does that matter for muscle contraction?
- What modern technologies rely on Marcus's framework for electron transfer?
- Why does the warm, humid environment of a shoe encourage odor-producing bacteria?
- Why did PCR make same-day testing possible during a pandemic decades after its invention?
- What effect did long-distance transport stress have on Salmonella excretion in pigs?
- Why does increased Salmonella shedding in transported pigs matter for food safety at abattoirs?
- How did inserting an antisense gene targeting polygalacturonase slow the Flavr Savr tomato's softening?
- Why do cholera toxin and pertussis toxin target G-proteins specifically, and what does that do to a cell?
- How did Nash's schizophrenia affect the decades between his 1950 dissertation and his 1994 Nobel Prize?
- What is the standard medical protocol for treating rattlesnake envenomation?
- Why would a patient try electroshock as a treatment for snakebite despite it not being part of any formulary?
- What did Robert Beaumont's survey find about patient preferences for waxed versus unwaxed floss?
- Why does knowing which floss patients prefer matter for actual dental health outcomes?
- What was the subject of Busch and Starling's award-winning medical literature review?
- How does whole-genome shotgun sequencing reconstruct a genome from randomly shattered fragments?
- How did sequencing Haemophilus influenzae set the template for the Human Genome Project?
- How did Nüsslein-Volhard and Wieschaus systematically map the genes controlling a fruit fly's body plan?
- What does HIV's protease enzyme do, and why does blocking it stop the virus?
- How did solving the protease's crystal structure help researchers design saquinavir?
- What is HAART, and why did combining three drug classes work better than any single drug?
- What did Robert Genco find about the relationship between financial stress and periodontal disease?
- What biological and behavioural mechanisms link financial strain to gum disease?
- What did the seven tobacco company executives testify to Congress in 1994, and how did that conflict with their own companies' internal research?
- How did this testimony contribute to the broader reckoning with the tobacco industry that followed?
- What did Furchgott discover about the role of endothelial cells in relaxing blood vessel walls?
- What combination of drugs was presented at the 1996 Vancouver AIDS conference, and how effective was it at suppressing HIV?
- Why did the new triple-drug regimen mark a shift from AIDS as a fatal disease to a manageable one?
- Why did access to combination therapy remain unequal between wealthy countries and the developing world?
- What unusual transmission case did Kleist and Moi document in the journal Genitourinary Medicine?
- What did Charnetski and Brennan's study find about Muzak and immunoglobulin A levels?
- What role does immunoglobulin A play in the body's immune defences?
- Why did the researchers partner with the Muzak corporation specifically for this study?
- Why is Ptashne's work considered foundational to modern cancer drug design?
- How did a minor finger puncture lead to a chronic infection lasting five years?
- What made the Royal Gwent Hospital case report a legitimate contribution to the medical literature despite its unusual title?
- What later medical treatments, including for erectile dysfunction and septic shock, grew out of the nitric oxide discovery?
- How did fluoxetine (Prozac) trigger spawning behaviour in freshwater clams?
- What role does serotonin play in coordinating the release of eggs and sperm in clams?
- What range of household containers did Arvid Vatle document patients using for urine samples?
- What specific brewing parameters does BS 6008 stipulate for making a standard cup of tea?
- Why do laboratories need a standardised tea-brewing method when comparing different teas?
- How was the Blonskys' 1965 centrifugal birthing device supposed to work?
- Why was the patented device never actually used on a patient?
- What diseases have since been linked to genes carried on chromosome 22?
- How did Eric Kandel use the sea slug Aplysia to explain short-term versus long-term memory?
- What did the serotonin transporter levels reveal about people newly in love?
- How did the newly infatuated group's results differ from people in long-term relationships?
- Why can two molecules with identical atoms and bonds behave completely differently inside the human body?
- How many countries and deaths were ultimately linked to the 2003 SARS outbreak?
- What measures brought the SARS outbreak to a halt by July 2003?
- How quickly did food dropped on contaminated tiles pick up E. coli in her experiment?
- What did Elwood Jensen discover about how oestrogen interacts with cells in the 1960s?
- How do nuclear receptors bind DNA to switch genes on or off once activated?
- What treatments in modern medicine rely on the nuclear receptor biology this research uncovered?
- What experimental method did McCulloch and Till use to study the effects of radiation on bone marrow?
- Why did Barry Marshall decide to drink a culture of Helicobacter pylori himself?
- What symptoms did Marshall develop after infecting himself, and how was he cured?
- What unusual technique did Fesmire find could stop intractable hiccups?
- Why does stimulating the vagus nerve interrupt the hiccup reflex?
- What medical applications does personalized regenerative medicine using iPSCs promise?
- How did this finding lead to a practical tool for controlling mosquito populations?
- How does age-related hearing loss explain why the Mosquito device only bothers teenagers?
- What frequency did Howard Stapleton's device emit, and why was it chosen?
- How did teenagers turn the anti-loitering device to their own advantage?
- How did researchers simulate jetlag in hamsters to test sildenafil's effects?
- Why might sildenafil speed up the resetting of a hamster's circadian rhythm?
- What factors determine the wavelength of wrinkles in a stretched elastic sheet, according to Mahadevan and Cerda's formula?
- What is tensional wrinkling and what everyday materials does it describe?
- How has the wrinkling equation been applied outside of physics, such as to brain folding?
- What hypothesis led Akira Endo to search fungal cultures for a cholesterol-lowering compound?
- How many fungal cultures did Endo screen before finding mevastatin, the first statin, in a Penicillium mould?
- What did clinical trials in the late 1970s show about statins' effect on LDL cholesterol and heart attacks?
- What evidence did Harald zur Hausen find that linked human papillomavirus, rather than herpes, to cervical cancer?
- How did Barré-Sinoussi and Montagnier isolate the retrovirus that would be confirmed as HIV?
- Which HPV strains did zur Hausen identify as most responsible for cervical cancer, and how did that lead to a vaccine?
- How did the discovery of HIV change AIDS from a fatal diagnosis into a manageable condition?
- How did Zampini and Spence's headphone experiment show that crunch sound affects the perceived freshness of a potato chip?
- How did Physarum polycephalum find the shortest path between food sources in a maze without a nervous system?
- How closely did the network the slime mould grew over a map of Tokyo resemble the actual Tokyo rail system?
- What does the slime mould's pseudopod-extension-and-withdrawal process suggest about how simple rules can produce efficient networks?
- How did crystallising the ribosome at atomic resolution reveal where antibiotics attach to it?
- Why can antibiotics disrupt bacterial protein synthesis without harming human cells?
- How does the shape of the lower vertebrae let a pregnant woman's spine curve back to compensate for forward-shifted weight?
- How does the threshold for breaking a beer bottle compare to the force needed to fracture a human skull?
- What is the BCR-ABL kinase, and how does the Philadelphia chromosome translocation produce it?
- How did imatinib change the survival outlook for patients with chronic myelogenous leukaemia?
- How did researchers get a brainless slime mould to model a rail network?
- Why did the slime mould's growth pattern end up resembling Tokyo's actual rail system?
- What hypotheses did the researchers propose for why this behaviour prolongs copulation?
- What did Douglas Coleman's parabiosis experiments with obese mice reveal about appetite control?
- What is leptin and how does it signal the brain to suppress appetite?
- How did the discovery of leptin change scientific understanding of obesity?
- What is angiogenesis and why do tumours depend on it?
- What is VEGF and how did Napoleone Ferrara's discovery lead to bevacizumab?
- How is anti-VEGF therapy used outside of cancer treatment, such as in eye disease?
- How did the J. Craig Venter Institute team chemically synthesise an entire bacterial genome?
- What happened when the synthetic genome was transplanted into a recipient cell?
- Why did critics dispute calling this the 'first synthetic cell'?
- What is the physiological link between the stress response and airway constriction?
- What information can respiratory mucus reveal about an animal's health?
- Why do discus throwers get dizzy after releasing the discus while hammer throwers don't?
- How does the direction of rotation relative to the release affect the inner ear's response?
- What did the visor experiment reveal about how long a road can safely go unwatched?
- How much did early antiretroviral therapy reduce HIV transmission between serodiscordant couples?
- How did Tomas Tranströmer continue writing poetry after a stroke took his speech?
- How did Vale's in-vitro motility assay let researchers watch individual motor proteins walking along filaments?
- What kinds of patient-specific therapies has iPSC technology made possible?
- Why did residents of Anderslöv who showered frequently notice their hair turning green?
- Why can the colon contain gas concentrations high enough to ignite during electrosurgery?
- Which gases in the bowel are responsible for the explosion risk during electrosurgical procedures?
- How did the dead salmon study change practices in neuroimaging research?
- Why can't a chemical reaction inside a cell be simulated using only quantum mechanics or only classical physics?
- How does embedding a quantum-mechanical core inside a classical shell let chemists model enzymes accurately?
- What impact did multiscale simulation methods have on modern drug discovery?
- How does calcium binding to synaptotagmin trigger the final fusion step of neurotransmitter release?
- What are SNARE proteins and how do they let a vesicle fuse with exactly the right membrane?
- How do calcium ions trigger neurotransmitter release in under a millisecond?
- What diseases result when the vesicle trafficking system fails?
- How did researchers measure the effect of viewing beautiful versus ugly paintings on perceived pain?
- What brain mechanism might explain why looking at a beautiful painting reduces pain intensity?
- How does chronic ER stress from the unfolded protein response contribute to type 2 diabetes?
- What makes olfactory ensheathing cells unusually capable of supporting nerve regrowth?
- How did surgeons use Darek Fidyka's own nasal tissue to bridge his severed spinal cord?
- What functional recovery did Fidyka regain after two years of rehabilitation following the transplant?
- Why did the 2014 Ebola outbreak spread so much farther than earlier outbreaks had?
- How did local funeral practices contribute to the transmission of Ebola in Guinea, Liberia, and Sierra Leone?
- What does rebound pain over speed bumps indicate about peritoneal inflammation?
- How did researchers model whether Moulay Ismael could plausibly have fathered 888 children?
- What variables did the model need — harem size, coupling frequency, years — to reach its conclusion?
- What did Evelyn Witkin discover about how bacteria respond to UV-induced DNA damage?
- Which body locations did Michael Smith find were most painful to be stung by a honeybee?
- Why is it remarkable that a bacterium evolved to digest a plastic that's only existed since the 1940s?
- What does it mean to vitrify water, and why does that matter for imaging a protein with electrons?
- Why does ear cartilage keep lengthening throughout life while bone growth stops?
- Why does sound played through the mother's abdomen reach a fetus only weakly?
- How did researchers measure whether a fetus responded more strongly to internally placed sound?
- What did the response of mouth and tongue movements on ultrasound indicate about fetal hearing?
- What is the ventral pallidum, and how does its activity differ in cheese-averse people?
- What did brain imaging reveal about whether cheese aversion is psychological or neurological?
- How can a focused laser beam trap a microscopic particle without touching it?
- How did stabbing a voodoo doll representing a supervisor affect participants' feelings of grievance?
- What does the finding that humans imitate chimps as much as chimps imitate humans challenge about imitation research?
- What made the postage stamp test appealing compared to laboratory-based diagnostic methods?
- What pathogenic bacteria did researchers find on banknotes collected from seventeen countries?
- Why does the human motor system respond to well-timed audible feedback in a way similar to other animals?
- What is HIF-1 and how does it let a cell sense whether it has enough oxygen?
- How do tumours hijack the body's oxygen-sensing machinery to grow their own blood supply?
- What cancers did Silvano Gallus's epidemiological studies associate with regular pizza consumption?
- How much saliva does a typical five-year-old child produce in a day, according to Watanabe and Ohnishi's measurements?
- How does a five-year-old's salivary output compare to that of younger children and adults?
- Why does measuring children's saliva output have real implications for hydration modelling and disease transmission?
- What clue led Harvey Alter to suspect an unidentified virus was causing hepatitis in transfusion patients?
- How did Michael Houghton clone the genome of the hepatitis C virus without ever growing it in a dish?
- What experiment did Charles Rice run to prove the cloned virus alone could cause hepatitis C?
- How effective are modern antivirals at curing chronic hepatitis C infection?
- How did the University of Amsterdam researchers establish misophonia as a distinct psychiatric condition?
- What method did Hasselmann develop to prove humans are causing observed climate change?
- Why do conservationists need to airlift rhinoceroses between reserves by helicopter?
- How did suspending rhinos upside down compare to stretcher transport for respiratory health?
- What did Dieter Oesterhelt discover about bacteriorhodopsin in salt-loving archaea?
- How do channelrhodopsins let green algae steer toward or away from light?
- How did Karl Deisseroth combine these microbial proteins to switch neurons on and off with light?
- Why are standard crash-test dummies inadequate for simulating a collision between a car and a moose?
- How does a moose's body mass distribution change where the impact lands on a vehicle compared to a car-to-car crash?
- What drastic step do some scorpions take to relieve prolonged digestive stress, and what does it cost them?
- What is oral mucositis, and why does it affect children undergoing chemotherapy?
- By what physiological mechanism does eating ice cream during infusion reduce mucositis pain?
- How did the randomised controlled trial compare ice cream to standard mucositis care?
- What biomarkers can Seung-min Park's smart toilet detect from urine and stool images?
- How does the toilet identify individual users, and what is unusual about its secondary identification method?
- Why does the thin, highly vascularised intestinal wall make rectal oxygen absorption physiologically possible?
- What improvements in blood oxygen saturation did Okabe observe in mice and pigs given oxygen rectally?
- Why might rectal oxygen administration matter in settings where ventilators are scarce or unavailable?
- What correlation did Newman find between claimed supercentenarian prevalence and the quality of local birth registration?
- How did placing a cat on a cow's back and exploding a paper bag serve as an experimental method?
- What did the disrupted milk let-down confirm about the effect of fear on the milk ejection reflex?
- Why does the presence of DNA in the cytoplasm, outside the nucleus, signal danger to a cell?
- How does the enzyme cGAS detect misplaced DNA and trigger the STING pathway?
- What role does the cGAS-STING pathway play in both cancer and autoimmune disease?
- How did a diabetes drug derived from GLP-1 come to be used for obesity treatment?
- What does the outcome of this transplant suggest about the future direction of xenotransplant research?
- Why does cooling near absolute zero matter for keeping quantum behaviour from being washed out by thermal noise?
- How did Tomoki Kojima test whether zebra-like stripes reduce biting fly attacks, and on what animals?
- What are disordered protein regions, and why were they long dismissed as structural filler?
- How do liquid-like condensates form inside cells, and what cellular processes do they regulate?
- How has condensate malfunction been linked to neurodegenerative diseases like ALS?
- What early warnings did Shapiro raise about antibiotic resistance, and how far ahead of the field were they?
- What did Venter's team achieve with the first synthetic bacterial cell in 2010?
- What is the molecular switch that turns off fetal haemoglobin after birth, and why does reactivating it help treat sickle-cell disease?
- How does template-directed self-assembly using real butterfly wings as sacrificial templates preserve the ridge-lamellae hierarchy in the final inorganic replica?
- What role do alternating high/low refractive index oxide layers (e.g. TiO2/SiO2) deposited via sol-gel processing play in reproducing structural coloration?
- How do fabrication routes like anodic aluminum oxide templating and molecular self-assembly differ in the length scales of nanostructure they can control?
- What multiscale modeling approach links molecular dynamics simulations of CNT-reinforced polymer to the micromechanical behavior of staggered carbon fibers at the microscale?
- How can competing growth regions in a plant tissue draw water away from each other through shared water potential gradients?
- Does interleaved practice improve implicit or procedural learning, not just explicit skills?
- In which domains has the benefit of interleaving over blocked practice been validated?
- How does modeling developing tissue as a porous medium change predictions of morphogen gradient shape compared to simplified diffusion models?
- In what sense does tissue geometry tune morphogen gradient profiles during development, and what does this imply for treating morphogens as physical rather than purely chemical fields?
- How can a mechanical 'breaking-in' process irreversibly increase the strain-sensing gauge factor of a 3D printed continuous carbon fiber beam?
- How does coextruding conductive filament around continuous carbon fiber improve electrical connection reliability and noise performance in self-sensing structures?
- How can synthetic transcriptional regulators be compiled into genetic circuits that perform Boolean logic operations inside plant cells?
- How does silane coupling agent (KH550) treatment of wood flour compare to acetic anhydride treatment in their effects on the mechanical properties of FDM-printed PLA biocomposites?