A Solid 20 Minutes of Useless Science Facts (ft. Hank Green & More!)

A solid 20 MINUTES of Useless Science Facts! After I went through this pain for 15 minutes, obviously it had to return - but which fact is the most useless?
Check out the inspiration for all of this, Austin McConnell's Useless Information Series: • A Solid 30 Minutes of ...
Thanks to ALL of the guests that took part, you're heroes 😍:
@austinmcconnell
Hank Green (@vlogbrothers @SciShow @crashcourse )
@johnnyharris Harris
@CorridorCrew and @Corridor 's Wren Weichman
@physicsgirl
@SteveMould
@answerinprogress 's Sabrina Cruz
@RealEngineering
@domainofscience
@CleoAbram
Vox's Joss Fong
@EmilyGraslie
@SimonClark
@MedlifeCrisis
@JohnCooganPlus
@MarenHunsberger
@Faultlinevideos
@IsaacJohnston
@KhAnubis
@PatKellyTeaches
@MatthewVandeputte
@DrAndrewSteele
@TravisGilbert
@JordanHarrod
@freethink 's Mike LaHood
@davidianhowe
@theHumanVerse
@HuwJames
@TristanSharman
Anna Rothschild
---------------------------------------------------------------------------------
👀 FOLLOW ME
Instagram: / tommo.carroll
Twitter: / tommocarroll
🎬 MAKING OF
Music I use: tinyurl.com/epidemicsound-Tom...
🐂 JOIN THE COMMUNITY
Discord: / discord
👋 GET IN TOUCH
Business Inquiries Only: [e-mail]
🎥 CREDITS
Additional Research & Fact Checking: Tristan Sharman
⏳ TIME STAMPS
00:00-00:05 HYPE
00:05-00:30 A call from a King
00:30-00:37 Austin McConnell
00:37-00:48 Facts
00:48-01:00 Hank Green
01:00-01:28 Facts
01:28-01:46 Johnny Harris
01:46-02:14 Facts
02:14-04:26 Wren (Corridor Crew)
04:26-04:57 Facts
04:57-05:22 Physics Girl
05:22-05:45 Facts
05:45-06:11 Steve Mould
06:11-06:22 Facts
06:22-06:34 Sabrina Cruz (Answer in Progress)
06:34-07:00 Facts
07:00-07:30 Real Engineering
07:30-07-53 Facts
07:53-08:14 Domain of Science
08:14-08:25 Facts
08:25-08:43 Cleo Abram
08:43-09:12 Facts
09:12-09:52 Emily Graslie
09:52-10:14 Facts
10:14-10:54 Simon Clark
10:54-11:10 Facts
11:10-11:42 Medlife Crisis
11:42-12:16 Facts
12:16-12:31 John Coogan
12:31-12:56 Facts
12:56-13:21 Maren Hunsberger
13:21-13:40 Facts
13:40-13:46 Faultline
13:46-14:17 Facts
14:17-14:26 Isaac Johnston
14:26-14:53 Facts
14:53-15:08 Khanubis
15:08-15:26 Facts
15:26-15:38 Patrick Kelly
15:38-15:52 Facts
15:52-16:16 Matthew Vandeputte
16:16-16:35 Facts
16:35-16:49 Andrew Steele
16:49-17:07 Travis Gilbert
17:07-17:11 Facts
17:11-17:29 Jordan Harrod
17:29-17:35 Mike LaHood (Freethink)
17:35-17:39 Facts
17:39-17:51 David Ian Howe
17:51-18:12 Verse
18:12-18:15 Facts
18:15-18:36 Huw James
18:36-18:47 Facts
18:47-19:16 Tristan Sharman
19:16-19:26 Facts
19:26-19:49 Anna Rothschild
19:49-20:31 Facts
20:31-20:41 20 Minutes BOSH

[@TommoCarroll]

Which fact was your favourite?

[@lizzieluz]

The factor of safety is my favourite useless fact

[@MedlifeCrisis]

Mine, obviously

[@ArlenKundert]

The part about fiber optic cables, but I also work in network engineering, so I might have a bias...

[@skyswinger5249]

The one about marine iguanas sneezing. I frickin' love marine iguanas.

[@TheRealQuickSilver]

I think the one that astounded me the most was the one about Mayflies. I don't understand how their cells could even generate that quickly.

[@MedlifeCrisis]

Mate you don’t take the easy option of just stitching it together, you really make it much more engaging…and much more work for yourself! Great stuff!

[@TommoCarroll]

Me thinking about taking the easy option is like putting a plate of Krispy Kreme donuts in front of me and trying to not hoover them up Thanks for being a part of it mate! I loved having you in this one :)

[@HaydenTheEeeeeeeeevilEukaryote]

@@TommoCarroll i wholeheartedly agree with medguy here, you did a great job making it feel much faster than 20 minutes

[@goonimann5028]

My favourite cardiologist, I’m so happy your in this video!

[@doctor_who1]

Cardiologist that knows more about anaesthesia than Anaesthesiologists? Hmm...

[@DrAndrewSteele]

This video is a complete waste of 20 minutes 41 seconds. I loved it! Thanks for having me!

[@TommoCarroll]

Haha, that's what I like to hear!

[@ZephyrysBaum]

@@TommoCarroll You are now one of my ~450 subscriptions!

[@Xenko007]

@@ZephyrysBaum What dose this even Mean

[@ZephyrysBaum]

@@Xenko007 I have subscribed to 450 people

[@jewelweed6880]

@@ZephyrysBaum 😂

[@omershalita9592]

Tommy: hey guys, please make sure that your videos are no longer than half a minute long Wren: *stares intensely*

[@whateverd]

literally. i dont wanna be that guy but it felt annoying

[@kindlin]

2:14 As a structural engineer, I loved this entire segment. And I had heard of the the super low factor of safety of aircraft, but I believe it's more like 1.5. While in spaceflight, it routine gets down to below 1.25, or even 1.1 or lower, depending on how much that extra design capacity affects the weight and how variable the loads are. Modern structural design mostly uses LRFD design, verse the ASD (Allowable Stress Design) being discussed with all of these factors of safety. FoS are easy to understand and implement (FS=5, *BAM,* you're much safer), but miss a lot of nuance is the statistical nature of the _maximum anticipated load_ that you expect your system to have to support/resist. In Load and Resistance Factor Design (LRFD), you apply a factor to various applied loads, like wind, earthquake, self weight, snow and live loads, based on how likely they are to occur simultaneously (1.2D+1.0E+0.2S), and you also apply a different factor to the capacity side of things, based on how variable the type of fabrication is for that type of member (rolled steel = 0.9, welded connections = 0.75, brittle concrete = 0.65). Taken together, the Load Factors and the Resistance Factors are intended to provided a 1:10,000 chance of failure of any given member experiencing its maximum design load.

[@user-gy9re6yn8b]

👆

[@artemisfowl9382]

ok

[@GabrielDemetriusSilva]

As a Engineer at the aeronautical industry I can say to you that there are REALLY strict rules on what is considered to be "the loads expected" on a airplane. Yes, the factor of safety can be considered "small", but the "expected loads" is actually waaaaaay higher than any regular operational load. The level of safety of a airplane is State of The Art in the engineering world. :) Fly safe, fly relaxed.

[@theresaduffy8222]

Thank you

[@feckineejit]

Yes I needed to hear this

[@Tht1Gy]

😱😱😱

[@bbgun061]

And the number of cycles is tracked so the airplane can be retired before metal fatigue occurs.

[@creativecraving]

That makes sense, because the airplane can easily increase the load on the fuselage and wings during an emergency event. It didn't make sense that you could have such a small safety factor and still have such insanely high survivability rates otherwise.

[@minecrafter0505]

Wren misunderstood the point a bit, so interesting :D But also, his safety factor is based on the carrying capacity of the aircraft, which isn't the only safety factor to consider. For example, four-engined planes can still fly with just one engine running.

[@samwalker2367]

He just wanted to be the center of attention

[@ScubaSteveabc]

I'm also pretty sure the standard safety factor for most commercial aircraft components is 1.5, and the factor for the pressurized fuselage is 2. Safety factors as low as 1.2 tend to apply to components like landing gear - which are obviously still critical but not somewhere where failure will likely result in serious injury.

[@danielm2549]

Wren's understanding of safety factor of airplanes was far off. While yes, the safety factor of airplanes are typically 1.5, not 1.2 mind you, planes are designed to actually hold up to 2-4 times their max gross weight, PLUS the actual safety factor on top of that. Although their landing gear probably couldn't, their wings can due to increased weight in turns and possible emergency situations.

[@willliamlockhart]

He was also generally wrong about structural safety factors which usually range from 1.2-1.5. I don’t know much about elevators but the IBC seems to say they have a safety factor of 5.

[@A_Random_Ghost]

@@samwalker2367 😶😶😶

[@peppersalt]

14:03 the female mayflies you are referring to do not die 5 minutes after being born, but 5 minutes after they molt from their juvenile form.

[@TommoCarroll]

True, my wording could have been better

[@lloydbush]

18:00 The only time I'm ever gonna see a guitar mistaken for a bass! LOVE IT!!!

[@TheBenenene10]

Did you just get EVERY sci KZbinr? With that lineup you could start a Edutainment YT Rewind

[@TommoCarroll]

If this video does well that is genuinely the plan! So…help a fella out and share this monstrosity!

[@EpiphoneShredzzzzz]

@@TommoCarroll you should get Kyle Hill on the next one! He's easily my favorite, right next to good ol' Hank

[@TommoCarroll]

@@EpiphoneShredzzzzz I tried for this one but will try again next year!

[@1qstudios]

but where is vsauce

[@petevenuti7355]

@@1qstudios oh that cartoon with the bulldog came to mind... This time I did not forget the gravy.....

[@szymonsowicki]

5:05 Maria Skłodowska-Curie was actually Polish, not French. The fact that she was married to Pierre Curie and that she had a French citizenship doesn't make her less Polish, as she was born and raised in Poland. Her last name Skłodowska should always be remebered as it was her real name and Curie was taken by her as a way to connect to the French science enviroment, besides of course being connected with her husband.

[@geekyvors2837]

🤓

[@coletm7146]

@@geekyvors2837 bruh this is a video on science facts tf else you expecting

[@camelliaraychaudhuri742]

And most importantly, she named the element she discovered after het homeland. 'Polonium'

[@josephc.9520]

@@camelliaraychaudhuri742 Rather than Francium Ill show myself out

[@camelliaraychaudhuri742]

@@josephc.9520 haha although we have her student to thank for that so...

[@nothingtoseemiano9895]

Its fun to see which ones youve already known simply by watching creators like these so much, and its fun to learn something new

[@JosefK29364]

Wren was the kid who didn't read the instructions and did the whole project the first night while everyone else just picked their topics.

[@Nufuckingway]

As a former lift/elevator engineer, a lift made for 10 people cannot lift 100. It will start sliding downwards because a lack of friction between the belts/ropes and the motor wheel. The safeties will catch you though, but it won't be pleasant and getting you out will be an absolute pain if you've gone down far enough. It will most likely start sliding around 15 isch depending on the lift, individual weights etc.

[@ctakitimu]

And is it 10 Filipinos or 10 Samoans? They should display the current load compared with its limit on a little digital readout. That always used to bother me a child.

[@user-ml6dk8sk4e]

Oh !😮

[@TristanSharman]

Fantastically useless video, it was an honour to be a part of it!

[@pythagoras646]

Actually your fact is not true...the largest single living organism, is a fungus, which is about 2300 acres in size

[@bernardkariuki1365]

@@pythagoras646 Oh yeah, I learned that useless fact from somewhere. A mycelial network that became it's own underground communication highway or something with a shared connection of roots. They'd all work together to keep the trees and plants on the network alive or share water and nutrients with those that didn't get enough. Weird community I'm a part of. Love it.

[@lunaakuma5044]

As someone Polish, It irks me just a bit when people "Marie Curie" her proper name is "Marie Sklodowska -Curie" and I know it is not the point (probably just English making it easier for people) but it feels like people are forgetting her Polish heritage by only using her husband's name

[@user-ue5lt7dz9v]

👆

[@jamesupton5914]

Love the eyes and ears fact. Makes so much sense when you think about how often one darts their eyes to try to locate a sound.

[@jackbrennecke3440]

i can legit feel my eardrums softly shift when i look side to side fast

[@brettbarager9101]

As a person who is a "Wealth of Useless Information," I appreciate being able to add this to my wealth!

[@georgielancaster1356]

A lot of these are spews of facts of decades old fact podcasts/videos. Disappointing. And appallingly vague and unacceptable. A lifetime of saliva is the same as 2 pools. What size pool? Kim Karcrapion factoid.

[@anon_imowy]

Marie Skłodowska-Curie wasn't French, she was Polish, that's why the element she discovred is called Polonium not Frenchium

[@bradh4848]

There is an element called francium though...

[@acidbunny999]

Yes. Please don't take this one from us

[@grzegorztlusciak]

05:05 - Maria Skłodowska-Currie as Polish! I hate when people don't acknowledge that and say that she was French. She was French only by marriage.

[@stefanyrojas8559]

It makes me so happy to know more than a half of these people, all incredibly talented and interesting human beings, such a good video¡¡

[@dylanpritchard4981]

This could have been 5 hours long and I wouldn’t have realized! I was just entranced by never ending facts!

[@HaydenTheEeeeeeeeevilEukaryote]

You can actually still hum with your nose plugged, just only for a short time before needing to stop to let the used air flow back into your lungs so you can push it back into your mouth and sinuses again. And this does technically allow you to hum. Fascinating. 6:30

[@KristenRowenPliske]

Not a very good hum, I’ve discovered just now. Sounds more like I’m trying to blow my nose 😁

[@MasterCrander]

If you allow the air to also empty into your mouth and fill your cheeks you get a little more time

[@DanWi90]

How do you hum? I can just hum normally trough the mouth!

[@HaydenTheEeeeeeeeevilEukaryote]

@@DanWi90 I think what makes humming "humming" instead of just..."musicing..."? is specifically having your lips closed while doing it. When I open my mouth I can make the sounds all the same, I just need airflow through somewhere. Plugging my nose and mouths gives me a time limit.

[@SirCutRy]

@@DanWi90 When you hum with your mouth closed, the lips don't contribute to producing the sound.

[@VectorScalar01]

Half of these facts come in exams

[@spacecase13]

I watched this in six sittings over two days. What an amazing ride!

[@whiteink225]

Marie Curie was polish not french. Her name was Maria Skłodowska Curie

[@Renuclous]

6:31 fun fact, you actually CAN hum with both mouth and nose closed! You can deposit the air in your closed mouth and shorty hum while lowering your jaw.

[@spacemanspiff3039]

I live maybe 20 minutes from Pando, and she's one of the most gorgeous creatures, especially in Autumn!

[@engineeringtehmetals]

In response to Wren's comments about the factor of safety of airplanes, it has everything to do with the material used. Aircraft metal is made to a much higher standard than the steel used in elevators and buildings (big part of why it's called aircraft aluminum or aircraft metal) and when the material is much more consistent the factor of safety doesn't need to be so high.

[@kamikazeviking3053]

6:22 The Japanese word for humming is "鼻歌" which roughly translates to "nose song"

[@TommoCarroll]

God damn it I love that

[@tommunyon2874]

One Easter vacation my sister and I attempted to hike from Los Alamos to the Valle Grande caldera. When we got into the aspen grove we met out match. The fallen trunks and tangled roots made it into a giant pick-up stick game that required one to climb over, duck under or squeeze through consecutively, in no particular order.

[@dzspdref]

Absolutely enthralling, and we are all waiting for the next 20+ minute episodes for Part 2, Part, 3,..... Part 56..... etc...

[@Sebastian-rf1hz]

The "why is the sky blue?" one is kind of incorrect. It has something to do with the shorter wavelength of blue light because shorter wavelength get scattered more, but as far as I know there's no resonance going on in Rayleigh scattering.

[@dhruvdas2770]

exactly! was looking for someone who noticed.

[@kindlin]

I was wondering if maybe I didn't understand scattering on some fundamental level. What I think he means is that the light can only be absorbed when it strikes the molecule at one of its fundamental frequencies, and the electron is sent to a higher excitation state (think: spectroscopy). But really, Rayleigh Scattering is not absorbing, but kind of deflecting or siphoning some of the energy from the incident light.

[@Sebastian-rf1hz]

@@kindlin Yes exactly, in Rayleigh scattering there are no real existing energy (and therefore no defined frequency for resonance) specific excitation states.

[@szymon.o]

5:05 there will never be a day when someone calling Maria Skłodowska-Curie "Marie Curie" or "a French scientist" will not bug me. I would expect more precision, especially from science entertainers, because this is truly disrespectful, both to Skłodowska-Curie herself and the Polish nation as a whole.

[@HawasPonders]

Yeah, like why would she call the very first radioactive element discovered "Polonium" if it wasn't for the fact she wanted to commemorate Poland (and also draw attention that it's been partitioned and erased from maps and Polish nationality was being repressed)

[@Night_Scroller]

Exactly! Thank you!

[@sachafriderich3063]

I love how i see a bunch of my favourite creators in the same video

[@user-ue5lt7dz9v]

👆

[@maryrosekent8223]

FAVORITE FACT: Bees using pumpkin flowers as sleeping bags

[@user-gh4gl8pk3u]

👆

[@CommandantNOVA]

This is the most ambitious crossover event in history.

[@TravisGilbert]

Thanks so much for including me on this Tom!

[@jeffhappens1]

Love your content!

[@TravisGilbert]

@@jeffhappens1 thank you!

[@TommoCarroll]

Thank YOU for being a part of it!

[@DampeS8N]

2Fast2Curious

[@Anvilshock]

There's a difference between being "included on this Tom" and "included on this, Tom". Did you ever get _off_ Tom again?

[@scept3r.studios]

Footnote on 4:26, the place is called Taal Volcano. Before it erupted in 2020, you can actually see the view of the volcano in Tagaytay, Batangas. The more you know :))

[@user-gh4gl8pk3u]

👆

[@nahidparvez7346]

When Wren arrives.. Man, I just love this guy a lot. The way he talks gives me vive of energy, excitements..

[@user-gh4gl8pk3u]

👆

[@Ballberith]

Marie Skłodowska - Curie wasn't French. She was Polish.

[@likebot.]

Man, you've really come a long way since your YT commenter days. The circles you travel in are amazing! Keep up the great work too.

[@TommoCarroll]

Haha my 'KZbin commentor days!?' what was that?

[@MrCodename]

"The internet weighs about a tennis ball" yup I'm stealing that

[@stefanschneider3681]

The one that struck me the most is the length of dna we produce over our lifetime - being a md and a hobby astrophotographer that hit me twice 🤣!

[@petevenuti7355]

Made me think of the spaghettivacation....

[@user-gu6td6hn2h]

The truest greatness lies in being kind, the truest wisdom in a happy mind.

[@coolguyhino92]

.....watching Wren's airplane speech hit different after the recent Boeing debacle.

[@sinfulhappiness]

For real. 😅

[@ckq]

Bro got half the people ived watched on KZbin

[@TommoCarroll]

I’m so stoked they were all so up for getting involved! They’re the MVPs!

[@xcoder1122]

My favorite facts were that arctica means "bears" and antarctica means "no bears." I have known these terms since I was in elementary school, but no one ever told me what they meant or where they came from and I never bothered to look that up. But it was also pretty cool to learn about the "safety factor," since I assumed there must be such a thing, but I had no idea what it was called or what values to expect in the usual cases.

[@poopandfartjokes]

Wait until you find out that Antarctica has two C’s. 🤯

[@Froahk]

17:55 talks about the similarities of the sky being blue and a guitar string shows a 5-string bass jokes aside I absolutely love this series, some of these facts have had me burst out laughing

[@guenthersteiner9252]

The scientist who named that fungus after Spongebob is a legend

[@teekaa2520]

Sorry the Factor of Safety part is wrong. And Wikipedia is partially wrong. The factor of safety accounts for uncertainties in the design, loads, material, manufacturing, environmental conditions... There is a misconception in that engineers calculate strength. They don't. They actually estimate strength with math and other means. Aircrafts have safety factors of at least 1.5 for most parts, but rarely exceeding 2.0. Also different factors of safety for different uncertainties are layered on top of each other (mostly by multiplication). A Factor of Safety can be decreased by increasing certainty. For example: more complicated math in the estimation process, strength tests (the best part of engineering), quality control during production...

[@teekaa2520]

But the rest of the video is pretty cool

[@teekaa2520]

To expand a little further on the safety factor (SF). Language and definitions differ between industries and areas. In general the highest load that can be reasonable expected during operation is the limit load. Based on standards and regulations (where they apply) and experience (where they don't) a SF or a set of SFs is defined. Limit load times SFs gives ultimate load. The design is based on the ultimate load. To exceed the limit load "because there's a safety factor involved" is wantonly negligent and if the justice system works as intended you go to prison. To suggest otherwise is incitement. I have seen regulations that state: You may apply a SF of 2.5 if you don't test the structure, but 2.0 if you test to limit load or 1.5 if you test to ultimate failure. The value of the SF may depend on the importance of the structure or the condition of the test. Extreme cold or extreme heat or both, maybe 90% humidity thrown in for good measure or you must use an intentionally degraded test subject. To select the appropriate safety factor is incredibly complex. To reason that it gives you a pass for misuse, well I made that point earlier.

[@JC-dt7jv]

Thank you. Came here to say this. Rockets are typically 1.1 to 1.2 per Tory Bruno. FAA wing test requires 1.5x max wing load per it's standard. In my industry 1.5 - 2.0 when comparing nominal load vs nominal strength is typical.

[@Nerdnotwashere]

Yep, just confirmed with my father who recently retired from working on aircraft after 30 years. Commercial aircraft is at least 1.5, and he knows several articles to prove this.

[@EpicSpaceman]

Love this, thanks for putting in so much effort to make it so interesting and entertaining!

[@TommoCarroll]

You're welcome! Thanks for watching the vid and dropping a comment :)

[@erichanson3369]

Many people are afraid of flying in an airplane because they can't overcome the thought of falling, or due to claustrophobia, or because of a fear that the plane will be highjacked, or for the perceived relative lack of physiological control while one is so unnaturally high in the air. I'm now scared to fly not for any of those much more common reasons, but rather because of my new knowledge of the comparatively low factor of safety sky vessels have. Thanks, Tommo Carroll and Wren, you just helped inspire a new phobia in my brain.

[@user-gy9re6yn8b]

👆

[@Fogmeister]

“Glass cow”?!? 😂 Scotland needs to have a word.

[@emfournet]

One thing to remember about that 1.2 FoS for the airplanes... That's loading it 20% above the absolute maximum, then subjecting it to the worst possible in-flight conditions the aircraft will ever encounter, and no airline would ever fly in- think loop-the-loops in a hurricane- and it won't break. That's pretty dang impressive.

[@ssdd28561]

... and every second in the air gives you fos "for free", because like 20-50% of the weight of the plane is fuel. But the thing that was helpful for my mind, is that you can break almost every system, and the plane will still be flying. Typical example is that 4 engine plane will survive with 1 engine left. So its "layman's fos" is like 4+ - if you can survive with 1/4 of the things that make you fly. And now you can think about max load on top of that and the worst possible weather conditions.

[@kindlin]

@@ssdd28561 And things like landing gear and your wings have a built-in dynamic FoS upwards of 2.0 (1.5 min). Also, anything directly necessary for humans to survive, like pressurization, etc., will be at the standard 2.0 minimum FoS.

[@rklauco]

This is getting progressively better :) Thanks! And great collabs!

[@TommoCarroll]

If this video performs well and there's a volume 3, I'll aim to make it progressively better again!

[@rklauco]

@@TommoCarroll The only problem with this video is that the facts are getting less and less useless :)

[@ThunderSnail.]

Ngl it's not useless at all 90% of all these facts were amazing and new to me Love your videos Tommo

[@chocolaterose3483]

I want to know more about all of the facts you guys shared. I felt so teased the whole time. Please keep up the good work guys. Forever a fan. 🙂❤

[@user-gh4gl8pk3u]

👆

[@bracco23]

Joke on you, i walked on the treadmill for the whole 20 minutes, no sitting!

[@Miss_Trillium]

As much as I like Wren & CD, I feel like his fact missed the mark (between the fat joke and pointing out that the Safety Factor was less than other things without explaining why it's still safe)

[@David-ln8qh]

Agree about the fat joke.

[@PageNeedsaLife]

Same the fat joke was really disappointing. I partially watched the video because he was in the thumbnail and it was just a bad time all around.

[@kskrastins30]

That is fun to watch. And very interesting. Opens some new perspectives 🎉 Thanks

[@gordohogo8016]

Can't believe I sat through the entire thing? Dude, I'm hitting replay!

[@Knooblegooble]

6:34 You had me looking at size comparison charts to make sure I wasn't crazy, I believe it's Jupiter is twice as MASSIVE as all the other planets combined.

[@Daymickey]

Wait wait… we don’t know how general anesthesia works?! But we use it everyday successfully. That’s crazy!

[@hannahlenk7426]

„the chair you’re sitting on” bold of you to assume I’m not laying in my bed

[@user-ue5lt7dz9v]

👆

[@MatthewVandeputte]

Thanks for having me my friend!

[@jakobmax3299]

10:11 is really fascinating. Only recently have we achieved high enough presicion that it cant be felt.

[@marcopohl3236]

Finally someone explained that Orca fact correctly

[@u1zha]

Amasia and mad hatterpillar = ❤ And noone dares to outdo Tom Scott's deadpan humor

[@kandystorressantiago8865]

10:47 creeps me out. I just imagine the moon falling into the Earth.

[@DragonMan5643]

19:55 I actually got a chance to experience a few minutes of totality back in 2017 during a school trip. I live in Nebraska, so it was just a 60 mile trip to Arthur so we could see it in full. Wild how such a short distance made such a difference.

[@user-gy9re6yn8b]

👆👆✍️

[@hannahbrown2728]

As my first exposure to your channel but not the format, putting Austin McConnell first of collabs has me cracking up!

[@TommoCarroll]

Haha glad you liked that!

[@DeRien8]

I was tickled every time one of these played that I had already seen. It's like a recap of my watch habits

[@user-tc5fv7wg3s]

Each time we face a fear, we gain strength, courage, and confidence in the doing.

[@sliceoflife4283]

I love this! Every single fact is a door to whole (useless) research

[@Sharonmxg]

I could watch/listen to 120 minutes easy. More please.

[@ChaoscelusApollyon]

this is like school but I actually enjoy it

[@iqtadarhaider]

3:30 So thoughtful of the editor to include a PIA plane 😉

[@user-ue5lt7dz9v]

👆👆✍️

[@saralynn518]

Wren: Chair designers know fat people love chairs. Me: I do. I do love chairs. I thought it was because of my spine and hip disorders, but I still love 'em! Oh, I'm lazy, too.

[@strlslvr987]

Don't all people love chairs though? Jeez

[@suchitrasridhar5313]

This was not only interesting, but also introduced me to a bunch of EduTube channels I had not heard of. Thanks!

[@itsgonnabeanaurfromme]

Pop science youtubers, you mean. Well youtubers and a neoliberal "journalist"

[@Bobolouis]

One of my favorites is one you might consider for your next compilation: Every planet in the solar system would fit between Earth and The Moon.

[@paulmarquardt6881]

About the humming: you actually can hum for a short while with your nose shut, the air that you would breathe out just is stored in your cheeks so it's only possible for like a second.

[@galaxiaknight]

the one about paintings has terrified me forever.

[@linuxliaison]

This is far better than any YT Rewind that the tube could make

[@TK-gz2sl]

I don't ever consider knowledge of how the world works "useless". There just isn't a time and place for that knowledge to shine yet.

[@user-gy9re6yn8b]

👆

[@randompheidoleminor3011]

17:06 Termites are well able to do this too - construction of their mounds requires a lot of dexterity on the part of the workers head and mouthparts, and many species' soldiers' heads are basically turrets mounted on a swivel that shoot a sticky resin at their enemies. Despite being totally blind they can accurately hit targets at relatively long distances. TBH I remember even some beetles being able to move their heads side-to-side.

[@user-gh4gl8pk3u]

👆👆✍️

[@skyswinger5249]

5:34 Okay, no joke. Marine iguanas have been my favorite animal for at least two years now. This fact is something I already knew, but still greatly appreciated 😊

[@TommoCarroll]

I've just wanted to share this fact for agessssss, so I'm stoked you still liked hearing it again!

[@playerguy2]

(Soon to be) Engineer here: The factor of safety thing was well explained, but a more detailed version would be "The factor of safety is there to account of mistakes and unknowns, such that the object surely breaks *after* it has served it's purpose. Airplanes are well understood and checked often to make sure they will surely survive 'n' more flights."

[@user-ue5lt7dz9v]

👆

[@user-li2du1ze4f]

my dad forced me to watch a science video cause i got a 56 in my mid-term exam but he never said which sort of video so thank you for 20 minutes and 41 seconds of useless information!

[@michaelafitzgerald721]

Mayflies actually live months to years in an aquatic nymphal stage after being born, and then those 5 minutes are when they molt and emerge from the water as adults! Very cool insects!

[@milandeclercq5747]

Man this video is a treasure full of conversation starters.

[@alexanderwinslow3422]

Putting faces to all these youtubers is incredible. Thank you for making this:)

[@TommoCarroll]

That’s a great comment to receive. Glad you liked it! :)

[@DJKHOTTA]

12:26 aw damn it, i wish we were on that side so i could take milkyway photos during summer in Costa Rica (that if the relative position to the sun stayed the same) because here we can see the center of the galaxy mainly during winter season, which is the rainy season, and when ghe rains start to go and the sky clears at night, the center of the galaxy is hidden by the mountains instead of at the top of the sky, which again, it happens during the rainiest months of the year here.

[@Pktommy1]

“Air planes go through so much testing so they’re strong enough to not break in the middle of a flight” 3:56 Boeing in 2024: 👁️👄👁️

[@Blaster_Unity_UB]

This was actually very fun to watch, although it could be called wasted, but I quite like useless facts!

[@MAGA_Extreamist]

I love stuff like this lots of rewinding and going back too

[@user-ue5lt7dz9v]

👆

[@Cloveis]

Even after the whole factor of safety bit, I’ll still say I feel safer on a plane than on an elevator.

[@timmytws]

4:09 really helps me. Going on an airplane overseas to the US lol Really good video!

[@VaterAyotte]

I multi tasked ... Don't judge me science dude!! Great video! Nice to see you all collaborating! 😀

[@user-gh4gl8pk3u]

👆👆✍️

[@cobaltchromee7533]

2:40 Jesus Christ, I didn't expect that. I love unexpected laughs