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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.

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Is this chart of eye colour inheritance accurate?

This image is circulating on social media (e.g. Pinterest). It implies that if you have green eyes, then you can't possibly have one biological parent with blue eyes and the other with brown. The ...
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1answer
473 views

Does fluoridation and chlorination in the US cause thyroid issues?

From an answer in Travel.SE with a net score of 10: Mains water is typically laced with chlorine and fluoride by law, to the point that you step out of the shower smelling [like] you just stepped ...
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1answer
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Will tiger farming drive up demand for wild tigers and lead to them being hunted to extinction?

I'm watching a documentary on National Geographic on a case where they were tracking down a gang trading in tigers in Thailand. It was claimed that tiger farms, who has the purpose of breeding tigers ...
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1answer
490 views

Is in vitro steak, not ground or bits, possible in 2018?

This article seems to say that it's possible to create the complex structure of a steak today. Is there any more reliable source that discusses the actual implementation of lab grown steak? Ground or ...
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Is rice water a good fertilizer?

When rice is washed, the wash water becomes whitish due to the starchy powder in the skin of unwashed rice. I've often heard or read, usually in water-saving, money-saving, or gardening tips, that the ...
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Did the BBC fake scenes in Planet Earth 2 with composite shots and CGI?

This YouTube video with over 100,000 views makes the claim that the BBC faked the iguana-snake chase scene in its recent documentary, Planet Earth 2. It makes the claim that the bundle of snakes was ...
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Are most humans infected with parasites that water fasting can eliminate?

So this is a new one for me... I came across a jaw dropping niche of health-woo today. Apparently tens of thousands of people (if not more) believe that almost all humans are infected with parasites ...
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583 views

Do fireworks kills birds, dogs and other animals?

Diwali is a Hindu festival of lights, celebrated with fireworks. My closest friend on Facebook shared this picture on my wall: Happy Diwali Thousands of birds, dogs & other animals ...
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Do fleas jump lower after being covered by lid? If so, do their offspring adjust to this lower height?

This is one of the popular experiments mentioned in motivational books. Here is summary from a motivational webpage: At the beginning of the experiment a number of fleas are placed in a jar. The ...
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Does natural selection have less impact on modern humans?

This question is motivated by two other questions that hinged on this one but did not explicitly ask the question. Is intelligence declining due to the lack of selection pressure? Is human evolution ...
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4k views

Will putting peanut butter or butter on a cat's paws help them to not get lost?

It is a common wives' tale that putting peanut butter (or sometimes just butter) on a cat's paws will help a cat not get lost in a new environment. Advocates of this give many varying reasons why it'...
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Wim Hof immune response techniques

Wim Hof practices several techniques which he claims lead to voluntarily influencing the immune system resulting in increased resistance to toxins and the cold. The techniques are categorised into ...
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315 views

Is it possible for ingested dsRNA (or other genetic materials) to affect human gene expression?

I am usually pretty skeptical about claims on the danger of genetically modified crops because the issue of health for me logically breaks down to: Do the genes altered produce toxic chemicals in a ...
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0answers
311 views

Do people become resistant to stinging nettles?

The WikiHow page How to Touch Nettles Without Stinging Yourself claims: Although experienced nettle harvesters often go bare-handed, this isn't just because they know how to avoid stings. Many of ...
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522 views

Does watering plants with purified water yield better results?

I watched a commercial for the Aquaguard Enhance RO+UV water purifier recently. In that commercial, a science teacher assigns an experiment to students. The students bringing a plant to school, and ...
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336 views

Does “power posing” affect testosterone and cortisol levels?

Social psychologist Amy Cuddy gave a TED talk in which she claims that adopting certain postures: can affect testosterone and cortisol levels in the brain. Business Insider Australia summarised it ...
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Coca-cola and open water swimming

I've heard it claimed that Coke helps prevent infections. The Independent Some open-water swimmers drink Coke after racing, both for the sugar rush and because it is said to neutralise harmful ...
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0answers
345 views

Ancestry tracking DNA tests

Since the advent of cheap DNA tests, several companies have sprung up which will tell you ancestral origins according to your DNA. 23andMe claims, Where in the world are you from? Find out ...
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0answers
344 views

Does area of the brain associated with the sense of self “shut down” when praying?

Is there any study done on the claim that the area of the brain associated with the sense of self "shuts down" when praying? In the NBC News article "What Happens to Your Brain When You Pray?", ...
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741 views

Was there a molecular test of Lanciano and Buenos Aires Eucharistic miracles?

Some roman catholic sources like this March 2012 US Roman Catholic Journal article This Is My Body–This Is My Blood claim there was an investigation performed about the eucharistic miracles in ...
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0answers
400 views

Does natural corn grow giant?

I was reading the Wikipedia article on corn today, and I noticed this interesting quote in the second paragraph: While natural maize varieties grow to 12 metres (39 ft) tall,[4] most commercially ...
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0answers
612 views

Does holding your stomach in prevent it from growling?

To save me from the embarrassment of a growling stomach my friend claimed that if I hold my stomach in, it restricts room for the stomach to move, and therefore cease its growling. Does this method ...
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0answers
380 views

Do “Zombie bacteria” live for millions to tens-of-millions of years?

Sputnik News reports that researchers are finding a "subterranean Galapagos" including "creatures such as microbial life thriving at 121 degrees Celsius or 'zombie bacteria', which can reproduce or ...
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Can Bioimpedance be used to prescribe essential oils and supplements?

Bioimpedance (or Bioelectrical impedance analysis) has been used to measure body fat. However, there are products that claim to link the bioimpedance results to essential oils and supplements: this ...
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337 views

Do homemade pregnancy tests with sugar work?

There are a lot of claims on the internet (like this one) that it is possible to test for pregnancy by just putting sugar in a glass and urinating on it. The hormones in the urine supposedly cause the ...
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0answers
229 views

Can good smells boost our immune system?

According to aromatherapists and articles such as this, good smells boost our immune system, and conversely, bad smells deteriorate our bodies. Is there a plausible mechanism to explain why this ...
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Has anyone used yoga to live for supernatural lengths of time?

According to this commentary on the Bhagavata Purana by Swami Prabhupada: By controlling the breath, the perfect yogī can continue his life for as long as he likes. Sometimes we hear from the Vedic ...
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Are our gut microbes responsible for 50-90% of our behaviour-regulating neuro-transmittors?

I have always concidered this channel serious, but they are making very bold claims. https://www.youtube.com/watch?v=T3Ftj5E90tY 50% of our dopamine and 90% of our serotonin is created by microbes ...
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0answers
640 views

Did Russian scientists manage to remove black skin from a man?

I noticed a clickbait article around facebook; A Russian Laboratory Has Invented A Way To Remove The Black Skin Layer Of Black People . Evidently these things have to be taken with a massive ammount ...
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0answers
673 views

Explanation for regularly hearing music of no apparent source?

My grandfather considers himself a skeptic. His wife (my grandmother) recently passed away, and ever since, he swears that he can hear distant ethereal music late at night, every night, and only in ...
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0answers
240 views

Is lactose intolerance an outdated diagnosis for discomfort after milk?

As a continuation of a question of most adults being lactose intolerant, the marketing of The a2 Milk Company in Australia House at SxSW 2018 suggested it may not be lactose-intolerance, after all, ...
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0answers
461 views

Will plant-life on Earth end due to too little CO2?

According to a 2013 Daily Mail article : greater evaporation and chemical reactions with rainwater will take away more and more carbon dioxide. In less than a billion years, its levels will ...
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0answers
451 views

Can this Indian teenager resist 11kV electric shocks without dying?

Many online sources report on the Indian teenager Deepak Jangra (Daily Mail, Mirror) who claims to be able to resist 11kV electric shocks. They include images of him touching an exposed mains wire ...
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Do overpopulated rats have extremely high infant mortality rates caused by competition and stress?

Dr John B. Calhoun conducted a series of experiments in the 1960's on the effect of over-population on Norway rats. Wikipedia explains: The conclusions drawn from this experiment were that when ...
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0answers
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Does chlorine in water harm soil bacteria?

This article claims that both chlorine, and chloramine, which are added to many municipal water supplies to kill harmful bacteria, can also harm the good bacteria in soil, necessary for a healthy ...
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523 views

Is it possible have a cell fusion by just injecting human sperm to an unfertilized chicken egg?

I stumbled upon these video documentation titled 'Humonculus' in Youtube (I know Youtube is not reliable source, but the video to me looks legit and well video documented) by channel named Planet ...
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163 views

Is the microorganism buildup in bedsheets harmful?

According to business insider, the New York University microbiologist Philip Tierno claims that bedsheets should be washed once a week and that mattresses should be changed more frequently because ...
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0answers
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Is the Pintubi-1 skull representative of a modern Aboriginal?

The following image shows two skulls - the one on the left is known as Pintubi-1. The one on the right is a modern Caucasian. It is claimed by many people and sites to be representative of the modern ...