Questions tagged [biology]

Biology is a natural science concerned with the study of life and living organisms, including their structure, function, growth, origin, evolution, distribution, and taxonomy. Use this tag for general biology questions, but also use more specific life science tags to accompany this one if applicable.

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7 votes
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345 views

Do introverts and extroverts respond to dopamine and acetylcholine differently?

This Mind Brain Ed blog article is an example of one that quotes the book Quiet kids: Help your introverted child succeed in an extroverted world. by Christine Fonseca in claiming that introverts and ...
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6 votes
0 answers
387 views

Is dandruff an indicator of an "unhealthy scalp?" Can a shampoo cure the underlying problem?

In this video (sponsored by Head and Shoulders) by Veritasium entitled "What Actually Causes Dandruff?", you can hear Dr. Jim Schwartz a Research Fellow at Head & Shoulders say: The ...
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3 votes
0 answers
113 views

Did a tree grow inside a man's lung after he inhaled a seed? [duplicate]

https://www.newshub.co.nz/world/fir-tree-in-lung-surgeon-stands-by-his-story-2009041623 The Russian surgeon who says he found a fir tree growing inside a patient’s lungs is standing by a claim that ...
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19 votes
2 answers
1k views

Has there ever been documented human individual producing both kinds of sex cells?

UCSB Science Line (University of California, Santa Barbara, scientist q/a) claims that: Long before we are born, the same gonads either become testes, if the embryo has a Y chromosome, or ovaries if ...
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6 votes
1 answer
3k views

Does the Yulan Magnolia flower bud look like a bird?

This GreaterGood article, Yulan Magnolia Flowers Look Like Beautiful Birds, shows pictures of flowers that look like birds, including these images from the planetsavioursuk Instagram account. They ...
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8 votes
1 answer
797 views

Does a fetus taste the mother's food?

There seems to be two disconnected claims (1) whether or not babies can addicted to the nutrients they're exposed to, like an excess of fats., and (2) whether or not a fetus can taste things the ...
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9 votes
2 answers
1k views

Did a 10 year old girl die from holding her breath?

Articles in the Daily Mail and the New York Post allege that Nyla Anderson, 10, died on December 12 after she took part in the dangerous Blackout Challenge which encourages participants to hold their ...
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2 votes
0 answers
182 views

Does electrolyzed reduced water (ERW) extend the lifespan of animals (compared to regular water)?

Among the research interests of Dr. Pablo Campra (of recent graphite-in-Covid-vaccines claim) is something called electrolyzed reduced water (ERW). One of the (Asian) groups studying this presents is ...
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6 votes
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491 views

Does the mass of human made objects exceed the entire biomass on the planet?

An article in Nature, "Global human-made mass exceeds all living biomass" in 2020 has recently gained some attention on social media (see this Twitter thread) possibly because of a striking ...
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34 votes
1 answer
1k views

Is listening to lossy audio more tiring than lossless audio?

Multiple posts on Reddit (Ear fatigue and Audio quality, another comment) claim that it is more tiring to listen to music in a lossy format. The same claim is even repeated on the Wikipedia page for ...
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12 votes
1 answer
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Does the AstraZeneca vaccine not come in contact with any animal product during production?

In refuting an Indonesian Islamic council finding to the contrary, AstraZeneca Indonesia director Rizman Abudaeri said in a statement: “At all stages of the production process, this virus vector ...
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1 vote
0 answers
369 views

Can someone die of hypothermia just from thinking they're in a cold place? [duplicate]

There's a legend about a guy named Nick Sitzman who was accidentally locked in an unplugged walk in freezer. It was during the summer so it was actually hot, but he thought the freezer was on, and he ...
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7 votes
0 answers
566 views

Is this study evidence that a fly falling into one's drink should be dipped?

About 9 years ago, a user inquired about a medical claim from an islamic text, a claim that a fly falling into your drink should be dipped in then thrown away (the claimed explanation being that ...
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-7 votes
1 answer
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Does this article make a valid claim that SARS-CoV-2 isolation hasn't been demonstrated yet? [duplicate]

This is the article: Lordchewy: "Exposing the Core Tenets of the Covid 1984 Regime, Part 2: Koch’s Postulates, Lack of Sars Cov 2 Isolation and of its Presence in Autopsy Reports", Medium, ...
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6 votes
2 answers
1k views

Is all disease caused by the electron spin of food?

Dr Elizete Kaffer is a Brazilian dermatologist. In a video (in Portuguese) she claims, starting from 0:54 (enphasis on the part that I translated): [After talking about hidden sources for pathologies,...
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7 votes
1 answer
891 views

Do banana peels take 2 years to decompose?

A Google search for "banana peel decompose time" gives the result: 2 years. This claim is repeated in several reputable sources, such as: Popular Mechanics, The Guardian, and BBC. However, ...
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1 vote
1 answer
313 views

Does a vaccine provide additional protection to a previously infected and recovered patient? [closed]

The change in literature I've observed during the covid-19 pandemic is certainly prompting this question, but I think the question can be answered broadly in terms of immunology, which does have ...
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32 votes
1 answer
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Is slime mold eaten in Mexico as a dish called "feces of the moon"?

Various web sites make the claim that slime mold is eaten as a dish called "caca de luna" -- feces of the moon -- in Mexico. Sometimes the claim is attached to Fuligo septica, "dog ...
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4 votes
1 answer
461 views

Has the US Air Force studied squid to improve aircraft camouflage?

The Hawaiian bobtail squid is known to have a close relationship with a particular species of bacteria that lives within the squid. The bacteria are naturally bioluminescent, which is hypothesized to ...
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5 votes
0 answers
280 views

Are there as many hair follicles in your nose as on your head?

The Cleveland Clinic website on nose hair says, "The inner surface of your nose has as many hair follicles as your head.". That seems like a lot! From a few measurements (sample size N=1 ...
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6 votes
3 answers
1k views

Has SARS-CoV-2 been purified in a lab? If not, does this imply that the PCR test for it is not specific?

Dr. Sam Bailey gives a number of references in her YouTube video on PCR tests stating the virus has never been purified as in actually separated from the infected cells. I'm curious if this is ...
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5 votes
0 answers
408 views

Was Mary Schwietzer the first person to suspect the odor of dinosaur fossils might imply that they contain organic material

Discovery magazine interviewed Mary Schwietzer, the woman who discovered soft tissue in dinosaurs. She mentions that when she was working on a T rex skeleton she smelt something like a cadaver. When ...
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6 votes
2 answers
502 views

Did biologists till 1950 believe that before solving transmission of hereditary traits we should solve protein folding?

Patricia Churchland in her 1996 paper “The Hornswoggle Problem” published in the Journal of Consciousness Studies (scholar link, PDF) writes: Before 1953, many people believed, on rather good grounds ...
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9 votes
2 answers
750 views

Did Dr. Nikolay Chudinov revive Permian bacteria found in a potassium salt crystal in Perm, 1972?

I have heard of 3.5 million year old bacteria being revived, but 250 mya is much longer, and I can find no modern mention of this astonishing claim anywhere. However, it was mentioned in multiple ...
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58 votes
2 answers
11k views

Is phosphine evidence of life on Venus?

This news article came out about evidence tied to the possibility of life on Venus. The crux of the evidence is the detection of phosphine. The claim is that we only know of two ways to make this ...
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7 votes
2 answers
689 views

Does synthetic vitamin C contribute to the formation of genotoxins that can lead to cancer?

While researching Vitamin C supplements, I noticed dozens of people outraged about various companies slipping in "synthetic vitamin c" (ascorbic acid). From what I can tell this aversion ...
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8 votes
1 answer
4k views

Are sardines farmed?

I've been trying to find out if sardines are farmed or if they are all wild and are only fished. Most of the sources I find, like this page, say that they cannot be farmed: They are not farmed, as ...
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4 votes
0 answers
589 views

Will bacteria grow in filtered water?

Zero Water makes water filtration systems that they claim remove 99% of total dissolved solids from water. On the Water is the New Gold blog, a water-filter scientist warns against its use: More ...
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8 votes
2 answers
5k views

Does it take two weeks for a single man to produce enough sperm to impregnate every fertile woman on Earth?

Fact Slides has a slide that claims: A single human male produces enough sperm in two weeks to impregnate every fertile woman on the planet. It sources a book of random facts Is it true?
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3 votes
2 answers
318 views

Was the yellow fever virus a past standardized biological weapon in the US Army?

Dany Shoham writes in a 2012 paper [full text, paywalled]: The yellow fever virus – a past standardized BW in the US Army, then carried by infected Aedes mosquitoes as vectors – was thus genetically ...
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4 votes
2 answers
658 views

Are there artificially created viruses that are both deadly like Ebola and transmissible like the common cold?

A popular YouTube personality, Dr. John Campbell, a retired nurse teacher, makes a claim in a May 4th video around the 4m27s mark: Now let's be quite clear. No-one is saying [SARS-CoV-2] is a ...
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3 votes
0 answers
272 views

Is there real scientific consensus linking bats to COVID-19? [closed]

I see a lot of articles in the media mentioning new bat species and adding references in the articles or the titles linking bats to coronavirus [The links in ref1 at the bottom are just some samples]. ...
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-1 votes
1 answer
412 views

Are crocodiles more closely related to birds than lizards and snakes?

In this video Owl, The Best Pet Reptile? you can hear Clint say, Crocodiles are more closely related to birds than they are to lizards and snakes. Is this claim true?
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20 votes
1 answer
4k views

Does rolled sod produce 40x as much oxygen as a pine forest?

From an advertisement for turf / rolled sod by a German company: 250 m² Rollrasen produzieren etwa so viel Sauerstoff wie 10.000 m² Kiefernwald oder etwa so viel, wie eine vierköpfige Familie zum ...
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9 votes
1 answer
1k views

Will homemade facemasks using vacuum bag filters cause lung irritation?

In this YouTube video A Doctor Explains How to Make the Safest Face Mask, a doctor, and then his wife, talk about 'the safest' home-made face mask. (He disclaims that it has been tested, but says he ...
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-1 votes
2 answers
368 views

Could the COVID-19 mortality rate be way lower than we think, implying vastly more cases? [closed]

I was analyzing some of the data surrounding COVID-19, and was looking at the vastly different mortality rates (calculated as deaths / total cases * 100). While there are probably many factors ...
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53 votes
1 answer
15k views

Do studies show that viruses are contagious?

An acquaintance of mine has been very adamant that viruses can't be caught and continues to link me things like this Ickonic video, where Jaymie Icke interviews Dr. Andrew Kaufman M.D. who claims: I ...
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1 vote
1 answer
540 views

Are pomegranate seeds edible? [closed]

My dad usually eats cherry seeds, which seemed dangerous to me, so I searched it online and indeed it can be dangerous. Today, I was about to eat a pomegranate but I wasn't sure if the seeds are ...
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8 votes
1 answer
948 views

Is there a species of locust-eating wasp that will check its burrow repeatedly if its food is moved?

The book Do Animals Think? by Clive D. L. Wynne claims that a biologist, Jean-Henri Fabre, conducted a number of experiments on the inflexibility on wasp behaviour. In particular: One species of ...
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39 votes
4 answers
17k views

Can social isolation kill babies?

According to the Wikipedia page for Language Deprivation Experiments, An experiment allegedly carried out by Holy Roman Emperor Frederick II in the 13th century saw young infants raised without human ...
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3 votes
0 answers
103 views

Does calcification of the pineal gland negatively affect normal bodily functions? [duplicate]

I received this link from an associate of mine. It smells like pseudo-scientific bull to me, but there are a LOT of claims made in the article that I can't really debunk all by myself. To quote from ...
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79 votes
1 answer
13k views

Does milk make your bones stronger?

It's a common notion that milk makes bones stronger; milk contains calcium and bones contain calcium. But obviously it's not the case that calcium ingested is immediately deposited into bones. In fact,...
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10 votes
1 answer
854 views

Are there records of girls born with enlarged clitoris mistaken - and raised - as boys?

In a popular-science Polish magazine Focus EKSTRA, special issue 5/2004*, page 39, there's a paragraph that says (in original Polish, emphasis mine:) Jak duża może być łechtaczka? Największe bywają ...
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4 votes
1 answer
82k views

Will a shark kept in a fish tank have stunted growth?

There is a widely recited saying that sharks kept in fish tanks won't grow to their full size. For example, author and motivational speaker Bob Harrison posted: A shark in a fish tank will grow 8 ...
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57 votes
2 answers
11k views

Do predators tend to have vertical slit pupils versus horizontal for prey animals?

The picture above is taken from a Telegram channel and the text in Russian goes as follows. Prey has got a horizontally shaped pupil to better scan the horizon and a predator's pupil has a ...
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  • 673
11 votes
2 answers
2k views

Did the chief baker of the Titanic survive two hours in ice-cold water?

In the Wikipedia page of the chief baker of the RMS Titanic, Charles Joughin, it is claimed According to his own testimony, he kept paddling and treading water for about two hours. He also admitted ...
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13 votes
1 answer
1k views

Does the average two-year-old pillow contain 17 different species of fungus? [closed]

In the New York City subway, I noticed a series of advertisements from a bedding company called Brooklinen. One advertisement had a surprising claim, which I found again on their website: The average ...
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4 votes
0 answers
263 views

Does rocking a child help their brain to grow?

Nature Play claim that a child's movement in the first two years helps them grow, specifically a rocking motion like in the womb. The link to the supposed scientific source is now dead. Is there any ...
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4 votes
0 answers
181 views

Does the moon have all these powers? [duplicate]

Today, I was talking with a coworker and I was surprised to see that she strongly believe that: When the moon is closer to the earth, hair grows faster. The moon influences when a woman (or person ...
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  • 245
10 votes
3 answers
9k views

Did "hundreds of birds" fall out of the sky in the Netherlands due to a 5G test? [duplicate]

A conspiracy news site claims that (emphasis added): Hundreds of birds have fallen from the sky in The Hague, the Netherlands, during a 5G experiment to see how large the range was and whether the ...
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