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183 votes
Accepted

Do studies show that viruses are contagious?

A qualified doctor challenging the Germ Theory of Disease after 1900? Wow. This is just a smattering - just a random tasting - of the thousands - or perhaps millions - of studies showing that ...
Oddthinking's user avatar
  • 142k
158 votes

Are 30% of human embryos "spontaneously aborted"?

Trivially true, yes. It's more commonly called Miscarriage: Among women who know they are pregnant, the miscarriage rate is roughly 10% to 20%, while rates among all fertilisation is around 30% to ...
jdunlop's user avatar
  • 2,949
123 votes
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Is phosphine evidence of life on Venus?

TL;DR The claimed detection of phosphine is not conclusive evidence of life on Venus; it simply indicates that there are unknown chemical pathways on the planet that are producing it. While these may ...
HDE 226868's user avatar
  • 11.2k
112 votes
Accepted

Do drop bears exist?

I'm going to take a wild guess, and say the first time you heard of drop bears was from a recent Pharyngula post that mentioned them. I'm guessing a few people were introduced to the concept by that ...
Oddthinking's user avatar
  • 142k
109 votes
Accepted

Are human fetal cells used to produce Pepsi?

The claims people bring to this site never fail to impress! This is more false than it is true. Pepsi does not contain HEK-293 cells. HEK cells were used to test different kinds of sweeteners to ...
Avery's user avatar
  • 45.8k
89 votes
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Does milk make your bones stronger?

A summary of recent evidence suggests: In children with initial low calcium intake, an increase in milk/dairy intake is associated with an increase in bone density. In adults, milk/dairy consumption ...
Jan's user avatar
  • 5,022
88 votes

Do humans share 50% of their DNA with bananas?

Finally, a question covering my nominal area of expertise. To answer this question meaningfully we'll need to define some concepts but first. Yes, sort of. The statement is factually correct for ...
Murphy's user avatar
  • 9,494
83 votes
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Russian scientist injects himself with 3.5 million-year-old bacteria, says he is now stronger and hasn't gotten ill in 2 years

The "mad scientist" seems to be Anatoli V. Brouchkov, one of the authors of Draft Genome Sequence of Bacillus cereus Strain F, Isolated from Ancient Permafrost, detailing the organism's name ...
LangLаngС's user avatar
  • 44.2k
61 votes
Accepted

Do teenagers fall asleep and rise up later than kids or adults for biological reasons?

There does appear to be fairly solid research backing this claim. A summary page from UCLA: Sleep and Teens One change in the body during puberty is closely related to how you sleep. There is a shift ...
Werrf's user avatar
  • 741
59 votes
Accepted

Can social isolation kill babies?

We cannot be sure exactly what happened 7 centuries ago; we only have the one account. However something akin to this experiment did occur, albeit without the controlled conditions. In Romania during ...
Paul Johnson's user avatar
  • 16.6k
44 votes

Is Michelle Obama a transgender woman?

It's pretty obviously a conspiracy theory rooted in transmisogyny and racism. Now, your question is a bit vague on what exactly the claim is. "chromosome abnormality" seems to indicate that Michelle ...
tim's user avatar
  • 52k
44 votes
Accepted

Is all disease caused by the electron spin of food?

The quoted text seems to refer to quantum-mechanical "spin". However "left" or "right" spin are not part of that concept, and it has nothing at all to do with the food we ...
Paul Johnson's user avatar
  • 16.6k
41 votes
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Do biological males who were castrated at birth and raised as females often behave like stereotypical men?

tl;dr- This claim is true. It may sound weird that some biological males are castrated and then raised as though they were female, however it's been done to address a birth defect where genitals ...
Nat's user avatar
  • 4,111
39 votes
Accepted

Is slime mold eaten in Mexico as a dish called "feces of the moon"?

Enteridium lycoperdon, a slime mold, is consumed by certain populations in Mexico and has the common name "caca de luna." Fuligo septica, another slime mold, is also consumed in Mexico. (...
Barry Harrison's user avatar
36 votes

Does science define life as "beginning at conception"?

Interestingly there's a survey: "Biologists' Consensus on 'When Life Begins'", 2018 of US biologists on this (the choice of profession/experts was motivated by a pre-survey of the US population at ...
Dolphin 613 Motorboat's user avatar
35 votes
Accepted

Is this Indonesian man, Mbah Gotho, 145 years old, as he claims?

The claims are nothing of any significance. Qouting (and translating) from the story Kenalkan Mbah Gotho, Kakek 146 Tahun dari Sragen: Lantaran bukti-bukti fisik yang menunjukkan kapan dirinya ...
thelawnet's user avatar
  • 5,276
35 votes

Are 30% of human embryos "spontaneously aborted"?

For those pregnancies that have already lasted 5 weeks, recent research sets an upper limit on the American public's cumulative "spontaneous abortion" of 22%, presenting the rate as a range from 11% ...
elliot svensson's user avatar
33 votes

Is there a point of no return when starving to death?

tl;dr: Yes, there is a point at which recovery is not possible without significant medical intervention. Death by starvation is not simply a matter of running out of energy to sustain life, so cannot ...
Dave Sherohman's user avatar
31 votes

Do humans share 50% of their DNA with bananas?

The claim that we share 50% of our DNA is likely a misquote of an older claim, that we share 50% of our genes with bananas. Both claims, as best I can tell, are false. I'll address each claim in turn. ...
Mark Amery's user avatar
28 votes
Accepted

Did a boy die after masturbating 42 times?

Snopes did a fact check and found that a recent variant of this story, set in Detroit - which they say was derived from the older Brazilian version - was false. They questioned how anyone knew the ...
A J's user avatar
  • 406
28 votes

Russian scientist injects himself with 3.5 million-year-old bacteria, says he is now stronger and hasn't gotten ill in 2 years

The one verifiable claim (assuming Mr. Brouchkov is not lying) made in the article is: Anatoli Brouchkov, head of the Geocryology Department at Moscow State University, says he has not had flu for ...
Sneftel's user avatar
  • 388
26 votes
Accepted

Did hundreds of birds die in a park the Netherlands? What caused it?

Seems to be true about a large number of suddenly dead birds. There are some articles in Dutch media reporting this. However the cause has not been determined and there is no mention of 5G antennas ...
Common Guy's user avatar
  • 4,648
25 votes
Accepted

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

As the top answer to this related question states, plants in general are oxygen neutral. In other words, whatever oxygen is emitted today will be emitted as CO2 later. So what really matters from a ...
Brian Z's user avatar
  • 7,470
25 votes
Accepted

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

Theoretically that is rough-ballpark-correct. But that is assuming that you would need only one sperm per woman, which is unrealistic. Using the... erm... "normal" way, not every sperm finds its way ...
DevSolar's user avatar
  • 19k
25 votes
Accepted

Does the AstraZeneca vaccine not come in contact with any animal product during production?

In the European Assessment Report for the AstraZeneca, they make that statement more specifically: The applicant also confirmed that no material of human or animal origin are used in the growth ...
0xDBFB7's user avatar
  • 1,934
23 votes

Are human fetal cells used to produce Pepsi?

Pepsi is certified kosher in the US, Mexico, and Canada (source), so there cannot be any human products involved in Pepsi made at those locations, as human flesh is not kosher. Kashrus certification ...
Menasheh's user avatar
  • 339
22 votes
Accepted

Has the synthetic bacteria Synthia become a rogue flesh-eating disease?

Upon closer inspection, it seems that this story can be traced to a single, very creative conspiracy theorist writing in 2010. As of 2020, the "World Vision Portal Forum" on which it was ...
Avery's user avatar
  • 45.8k
21 votes
Accepted

Did the BBC fake scenes in Planet Earth 2 with composite shots and CGI?

Sites that support the use of CGI or other digital manipulation effects do not provide supporting evidence. Specifically, what you see is really happening, whether in nature or in the lab. However, ...
Barry Harrison's user avatar
21 votes
Accepted

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

Yes, but it is spectacularly rare, and the one documented case I have found was not "one of the gonads gets the message", but a case of male/female chimerism or less likely mosaicism. Also ...
User65535's user avatar
  • 730

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