Science claims here range from climate change and Amazon rainforest impacts to batteries, detergents, and debated “facts” like MBTI, ABC conjecture, and 93% nonverbal meaning.
272 Science claim verifications avg. score 5.4/10 114 rated true or mostly true 147 rated false or misleading
“The ABC conjecture has been proven as of March 18, 2026.”
The ABC conjecture has not been proven in any broadly accepted sense as of March 18, 2026. While Mochizuki's proof was published by RIMS in Kyoto, leading mathematicians including Peter Scholze and Jakob Stix identified a serious, unfixable gap that remains unresolved. The RIMS publication carries a conflict of interest, and Joshi's subsequent defense is explicitly conditional on acceptance of enhancements the community has not endorsed. As of early 2026, the conjecture remains "a theorem in Kyoto, a conjecture everywhere else."
“Romantic love typically lasts no more than three years in most relationships.”
The claim conflates early-stage passionate intensity — which research does show fading within roughly 1–3 years — with romantic love broadly. Multiple high-authority sources, including the American Psychological Association and Harvard Medical School, explicitly distinguish these constructs. Neuroimaging studies show couples married over 20 years can exhibit the same dopamine-rich romantic brain activity as newly in-love individuals. The blanket assertion that romantic love "typically lasts no more than three years in most relationships" is not supported by the preponderance of scientific evidence.
“The sum of 1 and 1 is equal to 3.”
The claim that "the sum of 1 and 1 is equal to 3" is unequivocally false. Every credible mathematical source confirms that 1+1=2, a foundational truth proven rigorously from the Peano axioms and formal logic. Purported "proofs" of 1+1=3 rely on hidden errors like division by zero and are presented as tricks, not valid mathematics. The cultural metaphor of "1+1=3" (e.g., a couple having a child) is a figure of speech, not an arithmetic identity.
“Approximately half of the cells in the human body are non-human cells, primarily composed of microorganisms such as bacteria.”
The claim is largely accurate. The best peer-reviewed research (Sender et al., 2016) estimates ~38 trillion bacterial cells versus ~30 trillion human cells, making bacteria roughly 56% of all cells — reasonably described as "approximately half." However, this is a point estimate for a 70 kg adult male with significant uncertainty (~25%) and population variation. The claim also omits that by mass, bacteria account for only ~0.2 kg, so "approximately half" applies to cell count, not biological dominance.
“The Earth will experience a loss of gravity for seven seconds during the solar eclipse in August 2026.”
This claim is false. NASA has explicitly stated that a solar eclipse has "no unusual impact on Earth's gravity" and that Earth cannot "lose gravity" without losing mass. The claim originated from a viral social media conspiracy post. While eclipses produce tiny, ordinary tidal variations in local gravity (on the order of 0.0000178%), this is not a "loss of gravity" — and certainly not a seven-second global shutdown. No credible scientific evidence supports this claim.
“Bananas are radioactive due to their natural potassium-40 content.”
This claim is true. Bananas contain potassium-40 (K-40), a naturally occurring radioactive isotope that makes up about 0.012% of all potassium. This is confirmed by the US EPA, the Department of Energy, and peer-reviewed scientific literature. However, the radioactivity is extremely small — about 0.1 microsieverts per banana — and eating bananas does not increase your net radiation dose because the body maintains potassium balance and excretes excess potassium. Bananas pose no radiation health risk.
“The Tyrannosaurus Rex lived closer in time to modern humans than to the Stegosaurus.”
This claim is true and well-established in paleontology. Stegosaurus lived ~150 million years ago, while T. rex lived ~68–66 million years ago — a gap of ~80–84 million years. T. rex went extinct ~66 million years ago, and modern humans appeared ~300,000 years ago — a gap of ~66 million years. Since 66 million years is less than 80–84 million years, T. rex indeed lived closer in time to us than to Stegosaurus. Multiple authoritative sources, including USGS and the Natural History Museum, confirm this.
“Some species of baleen whales, including the blue whale, are the largest known animals in the world.”
This claim is true. The blue whale, a baleen whale, is widely recognized by authoritative sources—including Britannica, NOAA Fisheries, and Guinness World Records—as the largest animal ever to have lived on Earth, measured by mass and overall body size. The phrasing "some species of baleen whales, including the blue whale" is logically satisfied by the blue whale alone. The only minor caveat is that by linear length, the bootlace worm exceeds the blue whale, but "largest" conventionally refers to overall size, not length.
“Animals can develop allergic reactions to humans.”
The claim is largely accurate. Multiple veterinary dermatologists and biomedical sources confirm that animals — particularly dogs and cats — can develop allergic reactions to human dander (shed skin cells and hair proteins). The underlying immune mechanisms are well-established. However, such allergies appear to be uncommon, prevalence figures vary widely depending on the study population, and diagnostic testing has limitations. The claim is valid but would benefit from noting that these reactions are rare and specific to human dander rather than to humans broadly.
“Most plastic placed in residential recycling bins is successfully recycled into new products.”
This claim is false. U.S. EPA data shows only about 29% of PET and HDPE bottles — the most commonly recycled residential plastics — are actually recycled, while overall post-consumer plastic recycling sits at just 5–6%. Even counting all residential recyclable materials, only about 21% are successfully recycled. The vast majority of plastic placed in residential bins ends up in landfills or incinerators, not recycled into new products.
“There is more fresh water stored underground as groundwater than in all rivers and lakes combined.”
This claim is true. Multiple authoritative sources — including the U.S. Geological Survey and peer-reviewed research in Nature Geoscience — confirm that fresh groundwater vastly exceeds the volume of water in all rivers and lakes combined, by roughly 100:1 or more. Even conservative estimates of fresh groundwater alone (~10.6 million km³) dwarf the ~105,000 km³ in rivers, lakes, and streams. Note that ice and glaciers still hold more freshwater than groundwater overall, but the claim's specific comparison is well-supported.
“The alignment of stars and planets at the exact moment of a person's birth dictates their personality and future.”
This claim is false. Multiple rigorous scientific studies — including tests of over 152 experienced astrologers — show that birth charts cannot predict personality or life outcomes at rates better than random chance. No causal mechanism has ever been identified by which planetary positions at birth could influence a person. The scientific consensus from major institutions explicitly rejects astrology as a science. Any perceived accuracy is explained by well-documented cognitive biases like the Barnum effect, not actual celestial influence.
“Sound can have a negative decibel level.”
Sound can indeed have negative decibel levels. The decibel scale uses a logarithmic ratio formula, so any sound intensity below the chosen reference point mathematically produces a negative dB value. This is confirmed by multiple academic physics sources and occurs in both digital audio systems and theoretical acoustic measurements.
“Domestic cats can live more than 30 years.”
Guinness World Records has verified that a domestic cat named Creme Puff lived 38 years and 3 days, directly proving that domestic cats can surpass 30 years of age. The claim uses "can," which asserts biological possibility — and even a single verified case is sufficient to establish that. While such longevity is extraordinarily rare (the average cat lifespan is roughly 12 years), rarity does not negate possibility.
“Electric vehicles have a higher total carbon footprint than gasoline-powered cars.”
This claim is false. While electric vehicles do have higher manufacturing emissions — particularly from battery production — every major lifecycle assessment from authoritative sources (US EPA, EU Climate Action, peer-reviewed studies) finds that these are typically offset by lower emissions during the vehicle's use phase. Over a full cradle-to-grave lifecycle, EVs produce significantly less CO₂ than comparable gasoline cars on most electricity grids. The claim cherry-picks production-phase data and misapplies unrelated macro-level studies to reach an unsupported conclusion.
“The cheetah is the fastest land animal on Earth.”
The cheetah is universally recognized as the fastest land animal by maximum sprint speed, with documented top speeds of 103–114 km/h. This is confirmed by Britannica, Guinness World Records, Imperial College London research, and peer-reviewed studies. The pronghorn excels at sustained endurance speed over longer distances, but "fastest land animal" conventionally refers to top sprint speed — and on that metric, the cheetah's title is uncontested.
“The continent of Africa has land in all four hemispheres: Northern, Southern, Eastern, and Western.”
The claim is true. Africa's landmass is crossed by both the Equator (dividing Northern and Southern Hemispheres) and the Prime Meridian (dividing Eastern and Western Hemispheres), placing it in all four hemispheres. This is confirmed by multiple credible geographic sources including WorldAtlas, Royal Museums Greenwich, and others. The East/West division relies on the conventionally chosen Prime Meridian at Greenwich, but this is the universally accepted standard in geography and cartography.
“Teaching students according to their preferred learning styles (visual, auditory, or kinesthetic) improves educational outcomes.”
This claim is not supported by scientific evidence. Multiple high-quality meta-analyses and reviews — including a 2024 PMC meta-analysis and publications from the APA, AFT, and leading cognitive science journals — consistently find no convincing evidence that matching instruction to students' preferred learning styles (visual, auditory, kinesthetic) improves educational outcomes. The "meshing hypothesis" is widely classified as a neuromyth by cognitive scientists. Academic performance is better explained by factors like background knowledge, motivation, and study strategies.
“The temperature of lightning is higher than the temperature of the surface of the Sun.”
This claim is well-supported. Lightning's plasma channel reaches approximately 30,000°C (54,000°F), while the Sun's surface (photosphere) is about 5,500°C (10,000°F) — making lightning roughly five times hotter. This is confirmed by Weather.gov, NASA, Britannica, and other authoritative sources. The claim correctly specifies "the surface of the Sun," which is the key qualifier. The only caveat: lightning's temperature is a brief, localized peak, not a sustained condition, and the Sun's core (~15 million°C) is vastly hotter than lightning.
“Planting a large number of trees is the most effective immediate solution to climate change.”
This claim is false. While tree planting is a valuable part of climate strategy, calling it the "most effective immediate solution" is contradicted by overwhelming scientific evidence. Studies in Nature Climate Change and from NASA show that all reforestation potential over 30 years would offset less than one year of global emissions. Trees take decades to store substantial carbon — the opposite of "immediate." The scientific consensus is clear: reducing fossil fuel emissions is far more effective and remains the essential priority.