All articles starting with H
20,046 articles
Human height
Human height (stature) is standing body length, about 80% heritable and shaped by nutrition and disease. It has risen for 150 years, ranges from 158 cm (Indonesia) to 183 cm (Dutch men), and serves as a population health indicator.
Human heredity
Human Heredity is an English-language, peer-reviewed journal of human genetics published by S. Karger AG in Basel, Switzerland; founded in 1948, it took its current name in 1969.
Human herpesvirus 6
Human herpesvirus 6 (HHV-6A/HHV-6B, Roseolovirus) causes roseola in infants, establishes latency by integrating into chromosome telomeres, and in about 1% of people is inherited chromosomally integrated (iciHHV-6).
Human herpesvirus K1 glycoprotein, C-terminal
Human herpesvirus K1 glycoprotein, C-terminal (IPR004121, K1_C) is the conserved cytoplasmic domain of the KSHV/HHV-8 K1 (VIP) protein, carrying an ITAM that drives constitutive Syk, PI3K/Akt, and cytokine signaling.
Human Hibachi (film franchise)
Human Hibachi is an American found-footage cannibal-horror franchise written and directed by Mario Cerrito: Human Hibachi (2020), Human Hibachi 2: Feast in the Forest (2022), Human Hibachi 3: The Last Supper (2026), and the 2023 prequel short The Beginning, distributed via Troma Now and Tubi.
Human history
Human history is the record and study of human experience from the earliest traces to the present, divided into prehistory, ancient, medieval, early modern, and modern phases, studied through documents, archaeology, and ancient DNA, and reframed by Big History and critiques of Eurocentrism.
Human immunodeficiency virus 1, envelope glycoprotein Gp120
Gp120, the HIV-1 exterior envelope glycoprotein (Env surface subunit with gp41), binds CD4 then CCR5/CXCR4 to mediate viral entry; heavily glycosylated and variable, it evades antibodies and failed as a monomer vaccine immunogen.
Human Immunology Biosciences
Human Immunology Biosciences (HI-Bio) was an American clinical-stage biotechnology company developing monoclonal antibody therapies for immune-mediated diseases, launched in 2022 and acquired by Biogen in 2024.
Human impact on the environment
Human impact on the environment is the aggregate effect of human activities on ecosystems and climate, acting through land use, exploitation, climate change, pollution, and invasive species.
Human intelligence
Human intelligence: general mental capacity to learn, reason, and adapt, studied via psychometric theories (Spearman's g, Cattell-Horn Gf-Gc, CHC three-stratum model) and measured by tests from Binet's 1905 scale and the 1916 Stanford-Binet to modern IQ batteries, with ongoing debates over test bias and AI comparisons.
Human intelligence (intelligence gathering)
Human intelligence (HUMINT) is intelligence gathered from human sources such as spies, agents, and interrogators, unlike technical collection (SIGINT, IMINT). Led in the US by CIA's Directorate of Operations and Defense HUMINT Service, it uniquely reveals intentions.
Human interaction with cats
Human interaction with cats (Felis catus): a commensal Near Eastern relationship over 10,000 years old, Egyptian-mediated global dispersal, cat-human communication, attachment debate, and mixed health-benefit evidence.
Human iron metabolism
Human iron metabolism: the 3–4 g body iron pool, duodenal absorption via DMT1 and ferroportin, hepcidin as master hormone, macrophage recycling, and disorders from hemochromatosis to IRIDA.
Human Kind Of
Human Kind Of is a 2018 American adult animated sci-fi comedy web series created by Diana McCorry for Facebook Watch, produced by Cartuna. 21 short episodes about half-alien teenager Judy Reilly, voiced by Michelle Trachtenberg, aired September 16 to October 28, 2018, with an Annie Award nomination.
Human Landing System
The Human Landing System is the NASA program of commercially built lunar landers carrying Artemis astronauts to the Moon: SpaceX's Starship and Blue Origin's Blue Moon.
Human leg
Human leg: anatomically the knee-to-ankle region (crus), part of the 30-bone lower limb with femur, patella, tibia, fibula, and foot bones; weight-bearing structure central to bipedal walking and prosthetics.
Human leukocyte antigen
Human leukocyte antigen (HLA), the human major histocompatibility complex on chromosome 6p21.3, presents peptides to T cells; discovered via Dausset's 1958 MAC antigen, it is the most polymorphic human gene system and governs transplant matching, disease association, and drug reaction risk.
Human leukocyte antigen positive
Human leukocyte antigen positive (ICD-11 MA14.18) is a classification category for a positive HLA test result, paired with MA14.17 negative; used in transplant, transfusion, and disease-association contexts.
Human male sexuality
Human male sexuality covers male sexual desire, arousal, erection, ejaculation, and orgasm, testosterone's central hormonal role, Kinsey's 1948 report and the Kinsey Scale, Masters and Johnson's 1966 physiology research, and how masculinity norms shape male sexual behavior and health.
Human mating strategies
Human mating strategies: evolved short-term, long-term, extra-pair, poaching, and guarding tactics from sexual strategies theory, varying by sex, mate value, sex ratio, ecology, and culture.
Human metapneumovirus
Human metapneumovirus (HMPV), a Pneumoviridae RNA virus discovered in the Netherlands in 2001, causes seasonal winter-spring respiratory illness; no vaccine or antiviral exists, and severity resembles RSV.
Human microbiome
Human microbiome: the bacteria, viruses, fungi, and their genes living on and in the body, also called gut flora. Characterized by the NIH Human Microbiome Project (2007); FDA-approved fecal microbiota products REBYOTA and VOWST treat C. difficile.
Human migration
Human migration is the movement of people between places, permanently or temporarily. Also called emigration, immigration, and forced displacement; 304 million international migrants in 2024, 3.7% of world population.
Human mission to Mars
A human mission to Mars is a proposed crewed spaceflight to Mars, with no official landing date; NASA, SpaceX, and China are the main actors.
Human mitochondrial DNA haplogroup
Human mitochondrial DNA haplogroup: a maternal-lineage branch of the mtDNA phylogenetic tree, defined by specific mutations, cataloged by PhyloTree (5,437 haplogroups) and the newer Mitotree, used in ancestry and forensic genetics but confounded in disease studies.
Human mitochondrial genetics
Human mitochondrial genetics covers mtDNA, a 16,569-bp circular genome with 37 genes, maternally inherited, showing heteroplasmy, threshold effects, and the bottleneck; also called mitochondrial DNA inheritance, it underlies mitochondrial disease, ancestry tracing, and forensics.
Human Mortality Database
The Human Mortality Database (HMD) is a free open-access database of mortality and population data for 41 countries, launched in 2002 and hosted by UC Berkeley and the Max Planck Institute.
Human motion diffusion model
The Human Motion Diffusion Model (MDM) is a diffusion model that generates 3D human motion from text, actions, or nothing, introduced by Tel Aviv University researchers in 2022.
Human mouth
Human mouth (oral cavity): first portion of the digestive system, containing lips, teeth, tongue, and palate; divided into vestibule and oral cavity proper; serves eating, speech, breathing, and taste; affected by oral diseases in about 3.7 billion people.
Human multitasking
Human multitasking is the attempt to perform two or more tasks at once or in rapid alternation, a subject of cognitive-psychological research on task switching.