8 Truths and Myths About the Full Moon

With so many claims about the moon’s influence over everything from menstrual cycles to rainfall, SciShow is here to set the record straight with these 8 truths and myths about our moon.
Hosted by: Hank Green
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  1. avinash bhujan

    avinash bhujan2 soat oldin

    "Research actually has not found any connection". So does that mean it is definitely a myth? If you cannot prove something, does that automatically disprove it? You are implying that lack of evidence is evidence of nihility. Or does it mean that the research method is weak?

  2. nebulaunfolding

    nebulaunfolding5 soat oldin

    More babies are born under the full moon. Ask any experienced nurse in labor and delivery.

  3. photondance

    photondance17 soat oldin

    Okay. I’m comfortable with coincidences. Coincidi?

  4. liam redmill

    liam redmill20 soat oldin

    Superb new discoveries natural👍

  5. Theodore Seeber

    Theodore Seeber22 soat oldin

    Hmm- a solution to speed up corral evolution: Blue spotlights shining on the ocean all the time, triggering more sex parties, thus triggering hyperevolution for warming oceans.

  6. Aislin King

    Aislin King23 soat oldin

    Hank, I think those shirts clash a bit

  7. FriendlyShark Ce

    FriendlyShark CeKun oldin

    I apreciate that they didn't gender the users of the menstrual cicle app. Thank you for not using gendered language for that!

  8. Watermelon Warriors

    Watermelon WarriorsKun oldin

    Dung beetle: oh, dis is not so hard. Me: dats a weird looking poop ya got der

  9. MrWombatty

    MrWombattyKun oldin

    Why no mention of werewolves?

  10. Watermelon Warriors

    Watermelon WarriorsKun oldin

    It would be cool and scary to be a werewolf

  11. Jessikah I’m 2 F’ N REAL

    Jessikah I’m 2 F’ N REALKun oldin

    In the south when we see a couple pregnant women we say (must be a full moon) 🌕!!!!

  12. Jessikah I’m 2 F’ N REAL

    Jessikah I’m 2 F’ N REALKun oldin

    Omg😱😱😱 you the guy I watched for 4 years to get my degree from college online!!!!! It was you!!!! Thanks luv your Biology 🧬 videos SAVED ME!!!!!! I PASSED MANY TESTS!!!!! ❤️❤️❤️ I’ll never forget your voice!!!!

  13. Ken O

    Ken OKun oldin

    Isn't the most obvious one, the origin of the words lunacy and lunatic?

  14. RyanWake bradtelle

    RyanWake bradtelleKun oldin

    if the menstral cycle is a couionsidance then why did it change

  15. Sandman

    SandmanKun oldin

    there is always a different outcome between science tests and practical real world. You are more likely to get people acting crazy on a full moon. Control ab tests will always alter the outcome

  16. - { Nay } -

    - { Nay } -Kun oldin


  17. Amanda Powell

    Amanda PowellKun oldin

    If women did not have all the chemicals running through it, you would find a greater correlation with the moon cycle. Not that everyone will start and stop their cycle on the same day; but you can correlate a daughter's cycle from their mother's cycle.

  18. AgeingBoyPsychic

    AgeingBoyPsychicKun oldin

    10:30 Your moon seems to have a big chunk missing... Or is the grid pattern in front of the moon?

  19. Funny Memes

    Funny MemesKun oldin

    Annual Sex Festival is actually an underwater snowstorm...

  20. Michal Grňo

    Michal GrňoKun oldin

    0:15 Hank: Must be a full moon and- Also Hank: BUT!

  21. Positron Decay

    Positron DecayKun oldin

    3:23 That is so COOL!!

  22. Lovely Doll Time

    Lovely Doll Time2 kun oldin

    This video somehow reminds me of the Friday the 13th harvest moon in 2019.

  23. kez kezooie

    kez kezooie2 kun oldin

    This got me wondering about why scorpions would glow under UV light if it was something that put them in greater danger of predation. You'd think that natural selection would weed out this trait. Is there a metabolic reason for this trait? Is there something that is either beneficial or so necessary that it's let this trait survive?

  24. SlyPearTree

    SlyPearTreeKun oldin

    Their predators do not see in UV, at least I don't think so.

  25. dreadthedays says

    dreadthedays says2 kun oldin

    If you watch the moon cycle you will bleed on the full moon. This is pretty well know in celtic communities to reduce period pain and shorten the days as drastic as 4 dsys less. You do not need to do anything other than be aware of the moons current phase. Nearly everyone I have ever challengeed to try this alignment do agree in the effects.

  26. Kay Carle

    Kay Carle2 kun oldin

    What about the belief that full-term pregnant women are more likely to go into labour on the full moon? I've heard some midwives say that's not true, but that there is a spike in women being admitted to labour units when there is a thunder storm. Thoughts?

  27. CrunchyLikeness

    CrunchyLikeness2 kun oldin

    I wasn't ready for Hank's shirt

  28. Cat Poke

    Cat Poke2 kun oldin

    The thumbnail is like a cryptic way of saying "The blood moon is rising..."

  29. MultiRobotnik

    MultiRobotnik2 kun oldin

    Water Bending.

  30. bilias hour

    bilias hour2 kun oldin

    its interesting when people say , its super small effect im sure it doesnt effect us ... but ... how do you know for sure?

  31. Brian Steele

    Brian Steele2 kun oldin

    Internal worms and parasites in the human body could be affected by the moons place in orbit. Causing them to release hormones in the body that could cause a disruption in the human hormones. This would cause erratic behavior if there was a over abundance of worms and parasites.

  32. bilias hour

    bilias hour2 kun oldin

    All of my EMT and police friends believe in the full moon bringing out the crazies. 😂

  33. Chris Mcmullen

    Chris Mcmullen2 kun oldin

    Wilder,weirder and harder to believe? A third of the oceans dying off? Animals loosing contact with the voice of God in these times. Where did the 'fallen one's fall from? Not that far away. Theres a reason people would be very uncomfortable with a very simple and understandable truth. The basis for what constitutes almost all of human knowledge is arrogance

  34. aola wili

    aola wili2 kun oldin

    night....especially in King's Cross Sydney...

  35. Cats Are YES

    Cats Are YES2 kun oldin

    Why is there a f*cking ovary on the moon in that thumbnail!

  36. Caterfree10

    Caterfree102 kun oldin

    Clue is the best menstruation app bc it doesn’t force flowers on my nonbinary ass like every other period app on the App Store.

  37. aola wili

    aola wili2 kun oldin

    I must have miss- heard him when talking about creatures in Australia...I thought he said immoral trollops ...I've seen plenty of those doing the spawning thing on a dark moo

  38. Frederic Louf

    Frederic Louf2 kun oldin

    A vagina for thumbnail, somehow ? Should I understand that of all those eight stories, the menses' was the top relevant one or that the rough of a vajay's so much seemlier than that of a nudibranch ?

  39. Jason Lueker

    Jason Lueker2 kun oldin

    6:46? You said all scorpions, isn’t only venomous only?

  40. bilias hour

    bilias hour3 kun oldin

    Truth: Sailor Scouts fight evil by moonlight.

  41. Private Person

    Private Person3 kun oldin

    Where did you get the crime statistics ? When I charted the FBI reports of nation wide crime it was higher during the full moon. Less light polution back then.

  42. Dreamweaver

    Dreamweaver3 kun oldin

    I disagree. I work in an ER. Things are crazier on full moon nights, and that is consistent every month. We get more assaults and more psych patients than on other nights with the only acception being around the holidays those things are higher. But yeah, the full moon does affect human behavior.

  43. J P

    J PKun oldin

    I agree. My parents had several Taverns (one at a time at different locations) and I noticed that 4 days before a full moon there was an increased likeliness of a bunch of crazy bar stool jerks to get into a violent fight, especially when it was a Friday and pay day at the same time. Was it a coincidence? No I don't think so because it happened over many years always shortly before or on a full moon.

  44. bilias hour

    bilias hour3 kun oldin

    Hey, Tom Cullen, how do you spell "awesome"? M-O-O-N spells "awesome," laws yes!

  45. Raffa Luisi

    Raffa Luisi3 kun oldin

    Kos or some say Kosm

  46. James Bond

    James Bond3 kun oldin

    Perhaps more seizures occur under less moonlight because there would be more contrast between the darkness and headlights, flashlights etc...?

  47. xoobo vola

    xoobo vola3 kun oldin

    "chimps have a menstrual cycle of a whopping 39 days" me: mmm so I'm a chimp. That's nice.

  48. Nostr' Alma Mater

    Nostr' Alma Mater3 kun oldin

    Yeah ummm...tell a 911 dispatcher that people don't get weirdest during a full moon....cause they do.

  49. Ash Carruth

    Ash Carruth3 kun oldin

    I want to call Shenanigans on the menstrual cycle test. I'm not saying that they are definitely linked, but how many of all of those people were on birth control, other medications that affect hormone levels, live in a city with constant high light pollution, Etc? There are just too many new variables in our modern life that wouldn't have been present when that myth got started

  50. xoobo vola

    xoobo vola3 kun oldin


  51. Amber Smith

    Amber Smith3 kun oldin

    All of my EMT and police friends believe in the full moon bringing out the crazies. 😂

  52. Ilena Starbreeze

    Ilena Starbreeze3 kun oldin

    its interesting when people say , its super small effect im sure it doesnt effect us ... but ... how do you know for sure?

  53. okow tina

    okow tina3 kun oldin

    Me: Oh, finally a video debunking all myths like the moon's influence on surgeries. Hank: Lemme tell you about dung beetles!

  54. Starseed-bb

    Starseed-bb3 kun oldin

    i think human's sleep and menstrual cycles are linked to the moon for a reason. Full moon are religiously significant events in most of the world (a little bit less in Christianity and Islam, but these are organized religions that reject nature worship), so we can probably be pretty sure that humans have been getting up to some kind of special activity once a month or at every full moon. Women might have been consuming natural medicines to control their fertility cycle, and have used the moon to keep track of that which could slowly adjust their cycle to match up tot he moon's. Wouldn't be weird if tens of thousands of years of this have caused humans to have an internal clock sense of the lunar cycle.

  55. psycronizer

    psycronizer3 kun oldin

    I must have miss- heard him when talking about creatures in Australia...I thought he said immoral trollops ...I've seen plenty of those doing the spawning thing on a dark moonlit night....especially in King's Cross Sydney...

  56. okow tina

    okow tina3 kun oldin

    early hominid multi-day hunting parties to correspond with the full moon. Thus, males home for the new moon and some consistency in the periodicity of menstruation with th

  57. vulcanfeline

    vulcanfeline3 kun oldin

    "the effect is very small and wouldn't affect us at all" but it's enough to be felt by nudibranchs??

  58. Katie •

    Katie •3 kun oldin

    I and soooo many I know our cycles are synced with the moon cycles ovulating on new moon and mensuration on full moon.

  59. Crazy Average Asian Bitch

    Crazy Average Asian Bitch3 kun oldin

    fun fact: people who believe in myths won’t understand anything from this video explanation

  60. Cat Poke

    Cat Poke2 kun oldin

    Not all myths are obvious, like the myth that snakes can't hear. Their ears aren't external, so when you hear that myth, if you don't have experience with snakes, it's not going to sound stupid or wrong in any way. Same goes for many other myths. I'm sure you believe in some myths too, y'know. Not everyone who believes a few myths is stupid.

  61. mixio hili

    mixio hili3 kun oldin

    Is that a uterus in the thumbnail?

  62. LMacNeill

    LMacNeill3 kun oldin

    #3 "When the moon hits your coral photoreceptor, like a big pizza pie, that's amoré." Doesn't quite have the same ring as the original...

  63. J.R. Caldoon

    J.R. Caldoon3 kun oldin

    Hey, Tom Cullen, how do you spell "awesome"? *_M-O-O-N spells "awesome," laws yes!_*

  64. Symbi O'Tech

    Symbi O'Tech3 kun oldin

    Really good episode!!

  65. Symbi O'Tech

    Symbi O'Tech3 kun oldin

    @mixio hili First of all, light cannot be cold or hot. Temperature is a thermodynamic state that is applicable to matter. Light is not matter. Secondly, if we were speaking color temperature the moons lumens would be warmer than the sun. But I am sure you were trying to be mysterious. 😒

  66. mixio hili

    mixio hili3 kun oldin

    Moonlight is colder than the darkness and shade..

  67. drchpt

    drchpt3 kun oldin

    Hank the champ, a great 2020 to you and all of your team! Yes!!

  68. WWZenaDo

    WWZenaDo3 kun oldin

    I've spoken to policemen about the effects of the full moon on crime, and it seems there's more crime on the *new* moon, when there's less light. Moonlight can expose criminals to being spotted and caught.

  69. aola wili

    aola wili3 kun oldin

    I was expecting to hear about the infinite tsukoyomi.

  70. Coanda Effect

    Coanda Effect3 kun oldin

    Dung beetles can also navigate without the moon by using starlight, even the artificial starlight of a planetarium! www.sciencedirect.com/science/article/pii/S0960982212015072

  71. Greta Iceburg

    Greta Iceburg3 kun oldin

    Judging by just the thumbnail I would of thought it was a video about the moon's vagina.

  72. Greta Iceburg

    Greta Iceburg3 kun oldin

    @aola wili I love crazy.

  73. aola wili

    aola wili3 kun oldin

    ER’s and paramedics deal with “crazier” situations and don’t have a comment saying “I’m a nurse and I don’t see anything crazy” lol that’s just you.

  74. Jose Antonio Quintana aka Laz Aleman

    Jose Antonio Quintana aka Laz Aleman3 kun oldin

    The Moon 🌚 affects the tides and EPSTEIN DIDNT KILL HIMSELF!!