Terrence Howard on the Joe Rogan Experience #2152, fact-checked

What the evidence shows: Terrence Howard's account of a specific meeting with Neil deGrasse Tyson at a Fox industry event, where Tyson allegedly invited him onto his show, radio, and TV program, could not be independently corroborated through any allowlisted primary or reputable-journalism source. The broader, adjacent dispute between Howard and Tyson (Howard sending Tyson a 36-page treatise on his "1x1=2" theory roughly eight years earlier, and Tyson later posting a critical response video) is widely reported, including by Tyson himself in a public video, but that reporting appears only on non-allowlisted outlets (e.g., entertainment sites, blogs, Medium). No coverage from Reuters, AP, BBC, NPR, The Guardian, NYT, Washington Post, Scientific American, New Scientist, Snopes, PolitiFact, or FactCheck.org describing this specific "Fox event" invitation claim was found after an extensive search. As a result, this specific detail of Howard's account remains a single-source, unverified personal recollection and its status is unsupported/unverifiable given current allowlisted sourcing.

What the evidence shows: Giordano Bruno, an Italian philosopher tried by the Roman Inquisition for heresy, was executed on 17 February 1600. The events Howard places in 1599 were not the execution itself: the Inquisition's Holy Office approved its list of heretical charges on 14 January 1599, and Bruno gave his final refusal to recant on 21 December 1599, with the burning following weeks later in February 1600. Documentary accounts of the execution describe Bruno being led to the Campo de' Fiori in Rome, stripped, tied upright to a stake with a metal plate clamped over his tongue, and burned alive; no scholarly account describes him being hanged upside down before or during the burning. The claim that he was hung upside down is not supported by the documentary record. The underlying facts that Bruno was burned at the stake by order of the Catholic Church for refusing to recant heretical beliefs are accurate, but the specific detail of being hanged upside down, and the framing of 1599 as the execution date, are false or misleading.

What the evidence shows: Howard asserted that every planet in every solar system recedes from its star at a fixed "universal" rate of about 0.6 inches (1.5 cm) per year, describing this as evidence of a universal expansion. No such phenomenon is recognized in astrophysics: planetary orbital distances are governed by gravity and are not observed to shrink or grow at a shared, fixed annual rate across star systems, let alone the universe as a whole. There is one narrow, well-documented recession effect that superficially resembles the number Howard cites: the Moon moves away from Earth by roughly an inch per year (about 2.5-3.8 cm depending on the source), a tidal effect measured since the Apollo missions using laser reflectors -- but this describes the Moon's orbit around Earth, not planets receding from stars, and the commonly cited figure differs from the 0.6-inch number Howard gives. Earth's distance from the Sun is not known to be increasing at any fixed annual rate comparable to this, and no measurement supports a uniform expansion rate applying to "every solar system." The claim conflates or misremembers an actual, narrowly scoped orbital-mechanics measurement (lunar recession) with an invented, unsupported claim about universal planetary expansion, and is not supported by current evidence.

What the evidence shows: Howard's underlying concepts are broadly accurate: women are born with a fixed, non-renewing supply of eggs, and men continuously produce large numbers of sperm. But his specific numbers are not well supported. The egg-count claim reflects a common but imprecise version of a textbook narrative that describes paired female ovaries (both combined, not each) as containing roughly 1-2 million oocytes at birth, not 200,000-500,000 per ovary. A 2025/2026 peer-reviewed review in Human Reproduction Update found that even this widely repeated 1-2 million figure traces mainly to a single 1963 study of only two ovaries, and that published counts across studies actually range from the thousands up to as many as 20 million, meaning precise ranges like Howard's are not well established in the literature. The sperm claim could not be traced to any specific peer-reviewed figure measuring production per heartbeat; standard estimates put daily human sperm production in the tens to hundreds of millions of cells, which is broadly consistent in order of magnitude with a rate on the order of 1,000-plus per second, but no source verifying the precise 1,500-per-heartbeat figure was found.

What the evidence shows: Howard asserted that cancer rates rose 300%, all-cause mortality rose 40% in some age groups, and pulmonary embolisms rose nearly 500%, framed as consequences of covid-19 vaccination. National vital statistics do not support these figures. CDC/NCHS data on U.S. mortality in 2023 show age-specific death rates decreased, not increased, for every age group 5 years and older compared with 2022, and the overall age-adjusted death rate fell 6.0% (from 798.8 to 750.5 per 100,000), while life expectancy rose to 78.4 years. No CDC, NCI/SEER, or peer-reviewed national dataset shows a 300% rise in cancer incidence or a 40% rise in mortality for any age group coinciding with the vaccine rollout; annual cancer incidence and mortality statistics tracked by the American Cancer Society show gradual, low single-digit percentage shifts per year for most cancer types, not hundreds of percent. Pulmonary embolism incidence has risen modestly over recent decades, largely attributed to improved imaging detection, but no population-level dataset documents a near-500% surge tied to vaccination. As stated, the claim is not supported by, and is directly contradicted by, the best available national mortality and cancer statistics.

What the evidence shows: Howard's claim traces back to a single 2021 in vitro study (Jiang & Mei, published in Viruses) reporting that SARS-CoV-2 spike protein localized to the nucleus and suppressed BRCA1 and other DNA-repair proteins in cultured, plasmid-transfected cells. That study did not test vaccination, did not involve mRNA vaccines, and used spike protein overexpression in a dish rather than physiological exposure in humans. The paper drew an expression of concern from the publisher in December 2021 and was formally retracted in May 2022 after independent reviewers found its methodology and conclusions unsound. No peer-reviewed research has since established that COVID-19 vaccination silences BRCA1 or causes cancer in humans, and mRNA vaccines do not enter the cell nucleus or alter DNA. The specific mechanism Howard describes is not supported by current evidence, and its original scientific basis has been withdrawn from the literature.

What the evidence shows: Ivermectin is an antiparasitic drug that paralyzes parasitic worms and arthropods by binding glutamate-gated chloride channels in their nervous systems; this mechanism is specific to invertebrate physiology and does not constitute an antiviral mechanism in humans. Multiple large randomized controlled trials conducted during the pandemic, including a 2021 JAMA trial of 400 adults with mild covid-19, found that a course of ivermectin did not significantly improve time to symptom resolution compared with placebo. Larger multi-arm platform trials (including the U.S. ACTIV-6 trial and Brazil's TOGETHER trial) reached similar conclusions, finding no meaningful reduction in hospitalization, mortality, or recovery time attributable to ivermectin at studied doses. Health authorities including the FDA, NIH, and WHO have stated the evidence does not support use of ivermectin to prevent or treat covid-19 outside clinical trials. The claim that ivermectin's antiparasitic paralytic action demonstrates covid-19 efficacy conflates two unrelated biological mechanisms and is not supported by the clinical trial evidence; the framing that restrictions on its use were agenda-driven rather than evidence-based is not supported by the available data.

What the evidence shows: Howard's account, evidently referring to the Tuskegee Syphilis Study, misstates its central mechanism. The U.S. Public Health Service study ran from 1932 to 1972 (not the early 1920s to the late 1970s) and enrolled about 400 Black men in Macon County, Alabama who already had syphilis; researchers did not inject them with the disease but instead observed its untreated progression while withholding known effective treatment, initially withholding arsenic-based therapies and later penicillin once it became the standard cure in the 1940s. Participants were misleadingly told they were being treated for "bad blood" and were never given informed consent about the study's true nature. A separate, less publicized PHS-run experiment in Guatemala in the 1940s did involve researchers deliberately infecting people with syphilis and gonorrhea, which may be the source of the conflation in Howard's account. The claim is false as stated: the timeline is wrong by roughly a decade on both ends, and the study withheld treatment rather than actively infecting subjects.

What the evidence shows: The Tuskegee study was real and is one of the most notorious ethics violations in U.S. medical history, but several specifics here are wrong. Participants were not injected with syphilis: the roughly 600 Black men enrolled in 1932 either already had latent syphilis or were uninfected controls, and the abuse was that researchers deliberately withheld effective treatment, penicillin, the standard cure from the late 1940s, so they could observe the untreated disease. The study ran about 40 years, from 1932 until it was exposed and halted in 1972, not 60 years, and it began in 1932, not the early 1920s. The CDC, which names it 'The Untreated Syphilis Study at Tuskegee,' documents that the men were misled about treatment but were not deliberately infected.

What the evidence shows: Howard filed a patent application (publication US20100271394A1, application US12/765,485, describing a system for merging virtual reality with real-world sensory experiences) in 2010, but it was never granted; it was abandoned in 2013 after his attorneys withdrew and he failed to respond to an examiner's office action, not because he refused to pay maintenance fees as he claims. Because the application was abandoned rather than approved, Howard never held an actual patent on this technology. The application was cited 31 times in later patent filings by companies including Microsoft, Amazon, Sony, HP, and IBM, but a citation in a later filing does not establish that those companies built their AR/VR technology on Howard's work. No evidence supports the claim that his application is the foundation of the entire AR/VR industry. Fact-checkers rate the claim a mixture of true and false elements, with the industry-wide-foundation framing exaggerated and misleading.

What the evidence shows: Howard's figure appears to garble a real cosmological estimate: standard cosmological models (based on Planck satellite CMB data and other observations) hold that ordinary (baryonic) matter accounts for only about 5% of the universe's total mass-energy content, with dark matter making up about 27% and dark energy about 68%, together summing to roughly 95%, not "96% of physics." The claim also mischaracterizes dark matter and dark energy as concepts "made up" to paper over a mistake; in mainstream physics they are inferred from multiple independent lines of evidence, including galaxy rotation curves, gravitational lensing, and the cosmic microwave background, and remain active, well-funded areas of research rather than an ad hoc fix. No peer-reviewed source describes dark matter or dark energy as 96% of "unknown physics," and none characterizes the standard model or cosmological consensus as fabricated. The claim conflates a legitimate composition estimate of the universe with an unsupported accusation of scientific fraud.

What the evidence shows: Howard misuses "genome" where he means "gene count," but his numbers are close to published estimates. The 2002 draft sequencing of the rice (Oryza sativa) genome estimated 32,000 to 50,000 genes (Howard's 54,000 is slightly above this range but in the right ballpark). The 2004 finished human genome sequence estimated only 20,000-25,000 protein-coding genes (Howard's 26,000 is slightly above this range but likewise close). The core comparison, that rice has more genes than humans, is well-supported and widely cited in genomics literature. However, gene count reflects genome complexity and regulatory needs, not organismal complexity or evolutionary sophistication, so the claim's implication that a higher gene count indicates "more evolved" status reflects a misunderstanding of evolutionary biology rather than a factual error about the gene counts themselves.

What the evidence shows: Terrence Howard claimed there is evidence of roughly 130,000 years of water damage beneath the Sphinx. A multi-database search (OpenAlex, Crossref, Semantic Scholar, Unpaywall, and targeted searches of allowlisted news and scientific outlets) found no peer-reviewed geological study, agency, or reputable news source that reports this figure or anything close to it. The closest related scientific discourse is geologist Robert Schoch's minority water-erosion hypothesis, which argues rainfall-pattern weathering on the Sphinx enclosure could push its origin back to roughly 5000-7000 BCE (a few thousand years older than the conventional circa 2500 BCE date), a proposal itself disputed by other geologists (e.g., Gauri, Sinai and Bandyopadhyay's 1995 Geoarchaeology critique, DOI 10.1002/gea.3340100203) who attribute the weathering to salt crystallization rather than water erosion. No source, mainstream or fringe, proposes water damage on the order of 130,000 years. The specific figure could not be corroborated by any source meeting this project's sourcing bar (allowlisted domain returning HTTP 200 with directly relevant content); the most relevant academic paper sits behind a Cloudflare bot challenge that returns HTTP 403 to automated requests, so it cannot be cited here despite being a legitimate publication. Status: unsupported.

What the evidence shows: Howard claimed humans are 98.7% genetically identical to chimpanzees and asked how humans came to have 46 chromosomes instead of the 48 found in great apes, framing the latter as an unexplained mystery. Genomic studies place human-chimpanzee sequence identity in a similar range, commonly cited around 98.8% for single-nucleotide substitutions in aligned regions, though the exact figure varies (roughly 95-99%) depending on whether insertions, deletions, and structural variants are included in the comparison. The chromosome difference is well characterized: molecular genetic studies have identified vestigial telomere sequences fused head-to-head and a degraded second centromere in the middle of human chromosome 2, showing it originated from the end-to-end fusion of two separate ancestral chromosomes that remain distinct in chimpanzees, gorillas, and orangutans. This fusion event is a documented, peer-reviewed finding in comparative genomics, not an open question in the scientific literature. The premise that species with fewer chromosomes or higher sequence similarity are therefore "more evolved" is not a standard interpretation in evolutionary biology; chromosome number and overall similarity percentage do not correlate with evolutionary sophistication or recency.

What the evidence shows: Hominin brain size did roughly triple (not merely double) from early Australopithecines to modern Homo sapiens over several million years, a rapid change relative to typical mammalian encephalization rates, and the precise causal weighting of contributing factors remains an active research question. However, paleoanthropology does not treat this as an unsolved mystery: peer-reviewed work has proposed and quantitatively tested multiple, non-mutually-exclusive drivers, including ecological problem-solving, social/cooperative demands, and cultural transmission, with a 2018 Nature study modeling brain-size evolution as driven by a combination of roughly 60% ecological, 30% cooperative, and 10% between-group competitive pressures, further promoted by culture. This body of research explicitly aims to "refine, refute and unify" competing hypotheses rather than treating brain growth as an inexplicable anomaly. The claim that "most biologists" regard this as the single biggest mystery in the fossil record is an overstatement not supported by the current scientific literature, which frames it as a well-studied, multi-causal phenomenon with ongoing debate over relative contributions rather than a total mystery.

What the evidence shows: Rogan said silver is about 17 times more electrically conductive than gold. Silver does have the highest electrical conductivity of any metal, a property confirmed by U.S. government materials references, including the Los Alamos National Laboratory periodic table, which describes silver as having "the highest electrical and thermal conductivity of all metals," and the U.S. Geological Survey, which lists high electrical conductivity among silver's defining physical properties (driving its use in electronics, 27% of 2023 U.S. silver demand). However, standard reference values put silver's electrical conductivity at approximately 63 million siemens per meter and gold's at approximately 41 million siemens per meter, a ratio of roughly 1.5 to 1, not 17 to 1. Gold is itself widely used in electronics and connectors precisely because it is a good conductor with high corrosion resistance, consistent with gold and silver being in the same general conductivity range rather than differing by 17-fold. The direction of Rogan's claim (silver more conductive than gold) is correct, but the magnitude is overstated by roughly an order of magnitude; a 17-times figure does not match any standard materials-science reference value.

What the evidence shows: Element 115 (moscovium) was first synthesized in 2003 by a joint Russian-American team at the Joint Institute for Nuclear Research in Dubna, Russia, and Lawrence Livermore National Laboratory, by accelerating calcium-48 ions into an americium-243 target; the discovery was independently verified and the element was officially named in 2016 by IUPAC. This synthesis used a heavy-ion accelerator that fuses nuclei together, not a particle collider of the kind used to smash particles at high energy for physics experiments, and it produced only a handful of atoms rather than a usable stable material. Moscovium is intensely radioactive, with the most stable known isotope having a half-life well under one second (around 0.65 seconds for moscovium-290, roughly 220 milliseconds for moscovium-289), the opposite of the stable, weaponizable, anti-gravity fuel source described by Bob Lazar. The 2003-2016 discovery and naming of element 115 is real and well-documented, but it does not corroborate Lazar's specific claims about a stable element used for propulsion; current science regards moscovium as an extremely short-lived synthetic element with no known anti-gravity properties.