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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Someone told me elephants can be mean to each other. Are they? [on hold]

I was told that elephant in a herd can be mean to each other. Are elephants known to be mean to each other?
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2answers
281 views

Can a person lose weight by being cold?

I encountered a person not wearing a jacket in cold weather. He said he does this to lose weight. He explained his theory: By allowing his body to lose calories (heat energy) to the environment, his ...
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3answers
581 views

Do antibiotics weaken your immune system?

Recently, my friend told me that antibiotics will weaken your immune system. Their reasoning is that: Antibiotics remove the harmful bacteria from you, but they also remove the natural disease ...
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1answer
1k views

Is Michelle Obama a transgender woman?

Many of my friends claim that the wife of Barack Obama, Michelle Obama, is a transgender woman. In 2014, comedian Joan Rivers made the claim in a street interview: Rivers: You know Michelle is a ...
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0answers
59 views

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
21 views

Denser Atmosphere in the Mesozoic? [duplicate]

Wouldn't the denser atmosphere postulated by David Esker as an explanation for gigantism in the Mesozoic, as it would cause more pressure, go against the evolution of large sizes and masses in ...
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1answer
470 views

Are 1 in 12 men color blind?

The Colour Blind Awareness website claims that: Colour (color) blindness (colour vision deficiency, or CVD) affects approximately 1 in 12 men (8%) and 1 in 200 women in the world. This claim ...
13
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1answer
878 views

Has the Gympie Gympie tree driven humans to commit suicide because of the pain from its sting?

I often see the Gympie Gympie mentioned in fun facts or as an answer to "what are the scariest plants in the world?" or "What's the worst pain?" The plant is covered in stinging hairs that once ...
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0answers
434 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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2answers
868 views

Does taking birth control pills alter your preferences for a partner?

It has been reported (and repeated) several times that women who use the typical birth control pill (with both estrogen and progestin) show different preferences for men, depending on whether they are ...
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1answer
506 views

Can the human sense of touch work at the atomic scale?

One of the initiatives to provide a new international standard for the kilogram is the International Avogadro Project. Essentially this involves producing extremely perfect spheres of silicon atoms. ...
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1answer
337 views

Do people's backs arch when receiving an electric shock?

PathologyExpert.com says of bodies that have been electrocuted: May arch back and neck backwards. Many times in movies and TV shows, actors arch their backs when exposed to electricity. Is this ...
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0answers
160 views

Does copper react differently with different people? [closed]

One of my friends and I have developed a habit of drinking water from only copper vessels as I have read several benefits of drinking from that. But I observed one strange phenomenon during past few ...
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1answer
692 views

Does locking one's knees lead to fainting?

I have been told that locking one's knees can lead to fainting or passing out, and if you need to stand for an extended period of time you should always avoid standing and not lock your knees. I just ...
6
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1answer
409 views

Is the poison of the Giant Monkey Frog one of the strongest antibiotics ever found?

The website Kambo Medicina claims that Kambo, the poison derived from the poison from the Giant Monkey Frog (Phyllomedusa bicolor) is one of the strongest natural antibiotics and anesthetics found ...
12
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1answer
174 views

Does lavender repel moths?

On Wikipedia, it is said that Dried and sealed in pouches, lavender flowers are placed among stored items of clothing to give a fresh fragrance and to deter moths. I know many people do it. Has ...
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3answers
36k views

Is this what “happiness looks like”?

This gif has been widely distributed on imgur/reddit/twitter/media and it is meant to represent Molecules of the protein myosin drag a ball of endorphins along an active filament into the inner ...
12
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1answer
527 views

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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0answers
120 views

Does injecting Bacillus F improve one's health? [closed]

In a Siberian times report, a Russian scientist Anatoli Brouchkov claims that 3.5 million year old bacteria Bacillus F improves longevity and fertility of fruit flies and mice stimulated the growth ...
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2answers
15k views

Is this comparison of wedge tailed eagles and bald eagles accurate?

From https://twitter.com/dannolan/status/665409197685764096 (408 RTs, 495 likes), though another comparison between the two exists in Australian Popular Science [US flag, picture of American ...
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1answer
630 views

Has a human baby's heart started beating only 18 days after conception?

I saw billboards like this driving around Florida: 18 Days from conception my HEART was beating [...] Prolife Across America Is this true?
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1answer
676 views

Do saliva glands emit urine?

I've heard from "fun fact" sources that there is urine in human saliva: When you urinate, a small amount of the urine enters your mouth through the saliva glands. But that’s okay – fresh urine is ...
11
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1answer
447 views

Is it possible to survive longer without drinking water by eating ants?

A man was recently lost in the Outback and survived for six days in hot conditions without any water. Many news reports are claiming that he survived this long without water because he ate ants. ...
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2answers
772 views

Can a single sperm travel alone to an egg and fertilize it?

WebMD writes in its Sperm FAQ: It takes just one sperm to fertilize an egg and achieve a pregnancy, but for each sperm that reaches and fertilizes an egg, there are millions that don't. ...
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1answer
157 views

Can microbes live on surfaces with less than 10% humidity?

I've seen it claimed that bacteria or viruses can't live on surfaces when the humidity is less than 10%. But I can't find any credible source for this. The earliest source I can find is Popular ...
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0answers
283 views

What is 'Dharan(Navel Displacement)' in Scientific terms? [closed]

In India 'Dharan' is supposed to be a kind of sprain which causes the Navel to get displaced. But as far as I know in modern science there is nothing like navel displacement. What actually Dharan is, ...
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272 views

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 ...
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4answers
763 views

Do hand dryers in public bathrooms spread bacteria?

A hand drier is a warm and humid environment that is surrounded by bacteria from all the bathroom users. It is claimed that this is one of the main causes for spreading bacteria/microbes (NCBI ref) ...
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1answer
549 views

Are GMOs dangerous to the environment?

I have finally understood that GMOs are not dangerous to humans (or there is no evidence on that case) but I still don't know if GMOs are safe to the environment, because I have read that pesticides ...
20
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1answer
816 views

Did people long ago used to drink beer because water was dirty?

I've heard this dozens of times before. But from what I know beer doesn't have enough water in it to counteract the diuretic effects of its alcohol content, making this impossible. Which is true?
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2answers
22k views

Does dyeing elephant tusks help discourage poachers?

Recently, I've often seen this image claiming that some people are dying elephant tusks to prevent individuals from hunting them. Has this actually been done? Is it common? Initially, this seemed ...
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1answer
444 views

Did Nylon eating bacteria come about due to an increase in genetic information?

I found this video by a creationist who claims that the nylon eating ability of bacteria was not the result of an increase in genetic information. Does he actually have a point or is he wrong? ...
13
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1answer
708 views

Is the Earth experiencing another mass extinction event?

I have heard that Earth is experiencing another mass extinction event, with many species going extinct at a rate comparable to Earth's many other past extinction events. This has been reported in ...
104
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1answer
7k views

Is eating rice harmful to birds?

There is an old custom to throw rice at the wedding couple when they leave the church after the ceremony. But now I have heard from several people that you should not throw rice because birds will eat ...
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0answers
620 views

Did cats evolve meowing in order to manipulate humans? [closed]

My girlfriend told me last night that cats evolved meowing specifically in order to mimic the sound of a baby's crying to get us to feed them and so forth. Considering the meme of throwing shoes at ...
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1answer
6k views

During pregnancy, do babies send stem cells to their mothers to repair organ damage?

This picture is floating around the facebooks with no attribution to an original source (not even a source of the image): The image says: During pregnancy, if a mother suffers organ damage, the ...
8
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1answer
360 views

Do commercial DNA synthesis labs maintain a “watch list” of dangerous DNA sequences?

This New York Times article claims that Their DNA could be put on a watch list, as sequences for anthrax and smallpox are, so any attempt to buy them from DNA supply houses would raise flags. ...
2
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1answer
209 views

Can we tell our origin based on foot phenotype? [duplicate]

This suggest that someone from european lineages, can tell its origin from the shape of its feet. Does it really work?
5
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1answer
1k views

Can vinegar and essential oils repel ticks?

I just saw this facebook post claiming that vinegar and essential oils can repel ticks. In a spray bottle, mix 2 cups of distilled white vinegar and 1 cup of water. To make a scented solution so ...
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1answer
2k views

Does a human on a bicycle travel more efficiently than any other species?

Steve Jobs claimed on video that a bicycling human is more efficient at locomotion than any other species can manage. He repeated it separately on video, and in writing. The quote is still oft ...
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0answers
112 views

Could the 2001 anthrax letter attacks been connected to the disclosure of Project Jefferson? [closed]

Project Jefferson was designed to reproduce a strain of genetically-modified anthrax isolated by Russian scientists during the 1990s. It was disclosed (together with Project Bacchus, Project Clear ...
19
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1answer
1k views

Did scientists in UK find a sphere that is of extraterrestrial origin which contains alien biota?

Is there an independent verification of the claims made by University of Buckingham researchers? From http://www.express.co.uk/news/weird/554074/Alien-seed-sent-Earth-aliens-Scientists-baffled: ...
3
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0answers
120 views

Is there any correlation between temperature and illness? [closed]

How many times did you hear your mother tell you, "Put on a jacket or you're going to catch a cold!" or "Come in out of the rain before you catch cold!" It's also a fairly common trope in Jane ...
18
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1answer
1k views

Does drinking coffee, or any other activity, help sober a person?

This article claims that: Also, despite popular belief, "Only time will sober a person up. Drinking strong coffee, exercising or taking a cold shower will not help." So, if you're buzzing but ...
9
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1answer
601 views

Do individual heart cells “beat” when isolated?

In his book The Third Ear, author Chris Lonsdale makes the following claim in chapter 14: Some years ago, scientists did a very interesting experiment. They placed a single, live, heart cell into ...
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3answers
2k views

Can thunderstorms curdle milk?

When I was 13, my sister and I spent the summer on a dairy farm. We worked in the creamery, where (twice a day) we bottled fresh raw milk, as well as cleaned all the equipment. It was really a fun ...
7
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2answers
475 views

Are vaccine antibodies different than natural antibodies?

An article at mercola.com entitled Outspoken Vaccine Advocate States Measles Vaccine Can't Prevent Measles Outbreaks makes the claim that (emphasis added): Because vaccine antibodies are different ...
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0answers
240 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 ...
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1answer
290 views

Is a human on a bike more efficient than a fish in water? [closed]

Long ago, an enthusiastic cyclist claimed to me that a human on a bike was more efficient than a fish in water. Is this true? I would guess that the relevant measure of efficiency would be something ...
9
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1answer
718 views

Did Saint Charbel Makhluf's body remain intact for 50 years?

Saint Charbel Makhluf, O.L.M. (or Sharbel Maklouf),[1] (Arabic: مار شربل‎, May 8, 1828 – December 24, 1898) was a Maronite monk and priest from Lebanon. During his life he obtained a wide ...