272 Science claim verifications avg. score 5.4/10 114 rated true or mostly true 147 rated false or misleading
“In cement paste, cement and water chemically react in a process called hydration to form the binding material that holds the mixture together.”
The claim matches standard cement science. In cement paste, water reacts chemically with cement in hydration, producing solid hydrates—most importantly C-S-H—that bind the paste and give it strength. The statement is simplified, but the omitted details about different cement phases and secondary reactions do not change its core accuracy.
“The mitochondrial calcium uniporter complex mediates rapid Ca²⁺ uptake into mitochondria driven by the large negative inner mitochondrial membrane potential.”
The evidence strongly supports this description of mitochondrial calcium transport. Across reviews, structural studies, and foundational papers, the MCU complex is identified as the canonical pathway for rapid Ca2+ uptake into the mitochondrial matrix, powered by the large negative inner mitochondrial membrane potential. Caveats about regulation and debated alternative pathways do not change that core conclusion.
“Members of the phylum Platyhelminthes (flatworms) lack a specialized circulatory system.”
The evidence strongly supports this statement. Standard biology references consistently describe Platyhelminthes as lacking a dedicated circulatory system, with gases and nutrients moving mainly by diffusion and, in larger forms, through a branched gastrovascular cavity. That cavity assists transport but does not qualify as a specialized circulatory system.
“The odor of traditional Chinese medicinal materials primarily comes from volatile and semi-volatile organic compounds, including terpenes, alcohols, esters, aldehydes and ketones, aromatic compounds, and small amounts of sulfur-containing and nitrogen-containing compounds.”
The core description is well supported by peer-reviewed reviews and GC-MS studies. Across traditional Chinese medicinal materials, odor is generally driven by volatile and semi-volatile organic compounds, and the listed families are common major contributors. The main caveat is that the list is not complete: some materials also contain substantial alkanes, acids, amides, lipids, or other odor-relevant compounds.
“The dominant geological unit exposed at Punta Carballo, Costa Rica, is part of the Nicoya Complex (Nicoya Ophiolite).”
The evidence does not support describing Punta Carballo’s dominant exposed rocks as Nicoya Ophiolite. Locality-specific studies and mapping identify the main coastal exposures there as the Punta Carballo Formation, a younger sedimentary unit derived from the Nicoya Complex but distinct from it. The claim blurs the difference between regional basement geology and what is actually exposed at the surface.
“In recent years, deforestation and logging rates in the Amazon rainforest have accelerated, and the spatial patterns of forest loss in the Amazon rainforest have changed.”
The statement blends a real past surge with an inaccurate present-tense impression. Amazon deforestation did accelerate in roughly 2019–2022, and the geography of forest loss has changed, but the strongest recent data for 2023–2025 show deforestation falling substantially rather than continuing to accelerate. The spatial-shift evidence is also better established over decades than as a uniquely recent development.
“Forest fragmentation in the Amazon rainforest increases the vulnerability of forests to droughts and fires and negatively affects many animal species.”
The evidence strongly supports this claim. Amazon forest fragmentation is consistently linked to hotter, drier edge conditions, greater tree mortality and biomass loss, and higher vulnerability to drought-driven fires. Studies also show that many animal species are harmed by fragmentation, even though some generalist or disturbance-tolerant species may be less affected or occasionally benefit.
“New highways in the Amazon Basin have enabled settlers and loggers to access the interior of the Amazon Basin.”
Evidence consistently shows that new or improved highways in the Amazon increase access to previously remote interior areas, facilitating settlement and logging. Peer-reviewed studies and recent monitoring link highways to frontier expansion directly and through side-road networks. The main caveat is that highways are usually part of a broader system involving secondary roads, land pressures, and weak enforcement.
“In human-dominated landscapes, intensive hunting interacts synergistically with forest fragmentation to further threaten wildlife populations.”
Evidence supports the claim that intensive hunting can interact with forest fragmentation in ways that worsen wildlife declines beyond either pressure alone. The strongest direct studies show this in fragmented tropical forests, particularly Amazonian systems and Neotropical primates. However, broad global syntheses often confirm both threats separately without formally measuring synergy across all landscapes and taxa.
“Habitat fragmentation in the Amazon rainforest has caused measurable declines in wildlife and plant biodiversity and has disrupted ecosystems.”
The evidence strongly supports the core claim. Long-term Amazon studies show that fragmentation has reduced many forest-interior plant and animal populations, changed tree-community composition, and disrupted ecological processes such as microclimate and species interactions. The key caveat is that effects are uneven: some edge-adapted species can increase, and impacts vary by landscape and fragment size.
“Between 2026 and 2036, the exoplanet candidate J1407b will become observable with telescopes, enabling astronomers to observe it more effectively than before.”
The evidence does not support the claim that J1407b will become observable between 2026 and 2036. Research has not confirmed J1407b as a bound exoplanet, has not directly detected it, and has not established an orbit that would predict a transit or imaging opportunity in that decade. Presenting that window as an expected observing opportunity overstates what the literature actually shows.
“Fatimah et al. (2020) argue that municipalities can integrate climate change adaptation and mitigation strategies into waste management practices through landfill diversion, recycling, composting, and circular-economy approaches to reduce greenhouse gas emissions and strengthen climate resilience.”
The underlying policy idea is well supported, but the citation appears overstated. Evidence indicates Fatimah et al. (2020) is primarily a plastic-waste life-cycle assessment focused on mitigation, not a comprehensive municipal framework for integrating adaptation and mitigation across landfill diversion, recycling, composting, and circular-economy strategies. The broader literature supports that framework, but this specific attribution does not.
“Under ASTM D924 test conditions, the dielectric dissipation factor (power factor) of an in-service (aged) sample of Nynas Nytro 10XN transformer mineral oil at 70°C is greater than 0.01.”
The claim is not supported by the available evidence. Reliable sources for NYTRO 10XN provide new-oil ASTM D924 values far below 0.01, while broader industry references only show that some badly degraded mineral oils can exceed 0.01 under certain conditions. That does not establish that an aged, in-service NYTRO 10XN sample at 70°C will be greater than 0.01.
“Industrial activities, urban runoff, and textile effluents release suspended solids, dyes, and toxic substances into rivers and other natural water bodies.”
The evidence strongly supports the claim. Government and peer-reviewed sources show urban runoff and industrial and textile effluents can carry suspended solids, dyes, and toxic contaminants into rivers and other natural waters. Regulation and treatment can reduce these discharges, but they do not negate the documented fact that such releases occur.
“A typical cloud has a volume of about 1 cubic kilometer.”
The 1 km³ figure is a common teaching approximation, but it is not a sound general statement about a “typical cloud.” It refers mainly to an idealized fair-weather cumulus cloud, not clouds overall, and newer NASA reporting says average cumulus volumes are closer to 0.2–0.8 km³, with 1 km³ being somewhat large rather than typical. Without that context, the claim overgeneralizes.
“Blushing is an evolutionarily developed mechanism in humans that functions to display emotions and thereby facilitates collaboration and empathy.”
Evidence broadly supports blushing as a likely evolved human social signal that reveals self-conscious emotions and can help repair social relations. But the literature is more specific than the claim suggests: blushing is most strongly linked to appeasement after embarrassment or transgression, not a universal mechanism for collaboration and empathy. Some studies also report mixed or context-dependent effects.
“LETM1 is a proton-coupled mitochondrial calcium transport pathway that complements the mitochondrial calcium uniporter (MCU) and the mitochondrial sodium/calcium exchanger (NCLX) in controlling mitochondrial Ca2+ dynamics.”
Current evidence supports LETM1 as a proton-coupled contributor to mitochondrial Ca2+ handling alongside MCU and NCLX. Direct reconstitution and mechanistic studies support Ca2+/H+ antiport activity, but the field still debates whether that is LETM1’s main in-cell function or whether some Ca2+ effects are indirect through K+/H+ exchange and NCLX regulation.
“The Agulhas Current flows southward along South Africa’s east coast and warms the air above it, making the KwaZulu-Natal coast warmer than other places at the same latitude.”
The underlying oceanography is well supported, but the claim goes further than the evidence shown. Reliable sources confirm that the Agulhas Current flows southward along South Africa’s east coast and transfers heat and moisture to the air above it. They do not directly establish the broader comparison that KwaZulu-Natal is warmer than other places at the same latitude because of this current alone.
“In human communication, 93% of meaning is conveyed through nonverbal cues such as body language and tone of voice rather than through the words themselves.”
The 93% figure is not a valid rule for human communication generally. It comes from limited studies about conveying feelings and attitudes when verbal and nonverbal signals conflict, not from all speech or all meaning. Nonverbal cues matter greatly in many contexts, but the claim turns a narrow finding into a universal percentage that the evidence does not support.
“Electrochemical enzyme-based biosensors can detect metabolites such as glucose and lactate associated with tumor metabolism.”
Published studies support that electrochemical enzyme-based biosensors can detect tumor-related metabolites such as glucose and lactate. Evidence includes cancer-cell and tumor-sample experiments using glucose- and lactate-oxidase sensors. The main caveat is that many demonstrations are proof-of-concept or ex vivo, so capability is established more clearly than routine clinical use.