212 Science claim verifications avg. score 5.1/10 83 rated true or mostly true 125 rated false or misleading
“The peregrine falcon is the fastest animal in the world.”
The peregrine falcon is widely recognized as the fastest animal on Earth, with Guinness World Records certifying diving speeds up to 389 km/h (242 mph). This is confirmed by Britannica, Audubon, and other authoritative sources, and no other animal has been documented moving faster in any mode of locomotion. The one caveat: this record speed occurs only during a specialized hunting dive (stoop), not in level flight, where the peregrine is far slower. The claim reflects established consensus but omits this important context.
“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.
“Current atmospheric CO2 levels are not unprecedented when compared to levels found throughout Earth's full geological record.”
The claim is technically accurate: multiple peer-reviewed studies confirm CO2 exceeded 1,000–2,000 ppm during earlier geological periods (e.g., Mesozoic, Eocene), well above today's ~422 ppm. However, the claim omits critical context. Current CO2 is the highest in at least 14 million years, the rate of increase is roughly 100 times faster than any known natural rise, and deep-time CO2 estimates carry large uncertainties (±500 ppm). The literal statement is defensible, but its framing can create a misleading impression that today's levels are unremarkable.
“Bulls are attracted to or agitated by the color red.”
This is a well-known myth. Bulls have dichromatic vision and cannot perceive red the way humans do — it likely appears as a dull brownish or yellowish shade to them. Controlled experiments, including those by MythBusters, show bulls charge moving objects of any color equally and remain calm when objects are stationary. It is the movement of the matador's cape, not its color, that triggers aggression. The red cape is a tradition for human spectators, not a stimulus for the bull.
“The Lunar Gateway space station is not necessary for NASA's Artemis program to achieve its lunar objectives.”
This claim is misleading. While it's true that early Artemis missions (II and III) were designed to proceed without the Lunar Gateway, NASA's own documents call Gateway "essential to the Artemis architecture" for the full campaign. Artemis's stated lunar objectives include establishing a sustained, long-term presence on the Moon — not just a single crewed landing — and Gateway is designated as central to Artemis IV and beyond. The claim cherry-picks a narrow near-term truth and presents it as applying to the entire program.
“Human activity is the primary driver of observed climate change since the mid-20th century.”
This claim is true. The world's leading scientific institutions — including the IPCC, NASA, NOAA, and the National Academies — independently confirm that human greenhouse gas emissions are the primary driver of observed warming since the mid-20th century. Quantitative attribution studies show human activity caused approximately 1.07°C of warming, while natural factors (solar, volcanic) contributed only –0.1°C to +0.1°C. A small number of low-authority dissenting sources exist but provide no peer-reviewed evidence that overturns this conclusion.
“Mathematics is a fundamental aspect of the universe and is not merely a human discovery.”
This claim presents one side of an unresolved philosophical debate as though it were established fact. While mathematical Platonism — the view that math exists independently of human minds — is a legitimate and widely discussed position, it competes with formalism, intuitionism, and other views that treat mathematics as a human construct. The Mathematical Universe Hypothesis underpinning many supporting sources is a speculative minority position, not scientific consensus. The claim is not false as a philosophical stance, but it is misleading as a statement of fact.
“Unicorns exist as real, living creatures.”
Unicorns — the horse-like, single-horned creatures of folklore — do not exist as real, living animals. Multiple credible scientific sources confirm they are mythical. Claims of "real unicorns" refer either to narwhals (whales whose tusks inspired the myth) or to Elasmotherium sibiricum, an extinct rhinoceros that died out roughly 39,000 years ago. Neither qualifies as a living unicorn. No recognized scientific authority has ever documented a living unicorn species.
“A person can locate underground water or minerals using the involuntary movement of a handheld forked stick or divining rod.”
This claim is not supported by scientific evidence. The U.S. Geological Survey, systematic reviews, and controlled studies consistently find that dowsing performs no better than chance. The rod's movement is explained by the ideomotor effect (unconscious muscle movements), and apparent successes are attributed to the high prevalence of groundwater in many regions and dowsers' unconscious reading of surface cues—not detection by the rod itself. No properly controlled scientific test has validated dowsing as a method for locating underground water or minerals.
“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.
“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.
“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.