Becoming Radioactive With Hank Green - Safety Third 94

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‪@TheBackyardScientist‬
‪@williamosman‬
‪@allenpan‬
‪@hankschannel‬
Safety Third is a weekly show hosted by William Osman, NileRed, The Backyard Scientist, Allen Pan and a couple other KZbin "Scientists". Sometimes we have guests, sometimes it's just us, but always: safety is our number three priority.
0:00 Does farting helium sound different?
4:57 Oxygenate blood through your butt
11:55 Failing at school
20:32 Starting a cult
28:20 Becoming radioactive
37:10 How do PET scans work
50:10 Cancer tier list
58:20 What if your bones disappeared?
01:04:44 3D printing your brain
01:10:27 Rehydrating grapes
01:17:39 Vidcon
01:30:05 Making education easier

[@Blue-Science]

Never would I ever think I would ever hear Hank Green say “let’s cut out the pedophilia joke”

[@WoodmanTK]

omg thats what going to happen

[@DominicI1]

9:29

[@bigtall25]

Because he would normally leave it in

[@5hirtandtieler]

@@DominicI1to hear him drop such aggressive language is so hilarious

[@girl.anachronism5639]

MISCARRIAGES IN GAZA ARE UP 300%, WOMEN ARE GETTING C SECTIONS WITH NO ANESTHESIA, CHILDREN ARE BEING MELTED FROM THE INSIDES, PEOPLE DYING IN THE STREETS, SHOT AT WHEN THEY GO TO AIDE TRUCKS, SPEAK UP FOR PALESTINE, BOYCOTT, PROTEST!!

[@budvic]

First the Yard, now here. Hank be Greening today.

[@axew01]

That was my first thought😂

[@tosh.07]

Was literally just watching the Yard and thought it would be so cool if Hank was on Safety Third

[@highbell5172]

I wonder how much overlap there is. Are we special?

[@loganstewart4100]

Add me to the group

[@connorhatchs]

alrighnt maaaans!

[@Steepled]

Hank going "are you fucking vaping into the CO2 meter?" had me fucking howling

[@FrostyLosty]

“You’d have to do 9/11 to kill Voldemort.” -Hank Green 2024

[@nathanandbear]

Seeing the 'game theory' pop into their heads and get fleshed out was a wonderful sequence

[@SeagodWolf]

Also almost calling terrorism “black magic”

[@bigboibif7798]

"The pentagon was the horcrux" -William Osman 2024

[@ponk414]

PET Tech here, answers to all the questions: -The isotope attached to the sugar is fluorine-18 -F18 emits positrons, which annihilates into two photons at 180 degrees, which is what the camera detects. The camera also takes a CT image that provides a map of the body that the PET is overlaid onto -The tracer naturally decays and also leaves the body through the urine, it’s indistinguishable from background radiation within 12 hours -The cameras cost 1 to 2 million, each injection costs a couple thousand since it has to be produced by a cyclotron -They were correct that cancer is far less common in cells that reproduce less rapidly (which is why the heart is extremely rare) -Yes, contrast can go in the butt. No, I don’t want to talk about it.

[@probablyaparent]

Oh man, I can fill the contrast in the butt part from the patient perspective. They insert a little bulb and inflate it so it stays in place while they pump in the contrast. It's horrible. 0/10 - don't recommend. (Thanks for your work, good folks like you are keeping me alive)

[@Problem-attic]

I love that you can use the term annihilate casually here, gotta appreciate good jargon when you see it :)

[@abigailsemple4985]

Thanks for the info :) learning is cool

[@kamrynsikes]

The fact that there are “positrons” that “annihilate” within the human body is a terrifying idea even if it’s 100% safe

[@RainbowCornet]

Getting cancer and becoming a cancer nerd who can spout all kinds of cancer-related trivia off the dome is SUCH a Hank Green move.

[@Zelmel]

"I invented VidCon and everyone clapped" being a real thing that happened is pretty hilarious.

[@vigilantcosmicpenguin8721]

Also Hank's fart being a real thing that happened is pretty hilarious.

[@jamesgcrawford]

"You're a human, you have tolerances" thank you Hank so glad you're here for these kids

[@duskpede5146]

everyone on this podcast is above the age of 33 lol

[@technophobian2962]

He sounded like he was genuinely concerned when he said it too lol

[@catlovingnerd21]

​@@duskpede5146that doesn't mean they don't act/think like kids 😂 they may be smart, but when you put a bunch of geeks together, they definitely don't act their age. this isn't a diss, just an observation

[@Channel95TV]

Not even 5 minutes in and Hank has gone from almost shitting himself to discussing inflation fetishes. Covering a lot of ground here real quick.

[@SomeThingOrMaybeAnother]

And he himself "derailed" the podcast with "guess my fart".

[@Fs3i]

And tomorrow his videos will, statistically, be shown in many classrooms. The duality

[@floatingblaze8405]

So many unhinged out of context quotable moments, this episode is a goddamn goldmine

[@djtreq]

"Red has been done to death" got me 💀

[@alexisatuatara570]

Honestly most of them are still unhinged in context which makes it so much better lol

[@theelectricant98]

you probably don't wanna get the mouths involved

[@Billywashere89]

Hank talking about Kathrine laughing at his jokes is the most wholesome thing ever...

[@JoshZanders]

This is Hank Green: Unhinged, and I am HERE for it! 🤣 Feels like the polar opposite of the Kyle Hill and Tom Scott episodes - instead of the boys' chaos breaking on the stalwart guest like ocean waves, Hank came in with so much feral energy that it put everyone else on the back foot!

[@vigilantcosmicpenguin8721]

I bet if they asked Hank for his thoughts on Caillou hentai he'd answer.

[@NoConsequenc3]

@@vigilantcosmicpenguin8721 curse you for writing such foul words

[@BelindaShort]

Man you know you're really following all the right people, or maybe the very wrong people, when they all show up on each other's podcasts. Hank green is the best

[@catlovingnerd21]

same here! edit: and definitely all the right people

[@jurian0101]

Are any of the S3RD guys going to be on the Scishow Tangent podcast? that is the question.

[@lukeskywalker2399]

exactly. It is so reassuring that that the "creators" i like and respect, also like each other. I feel that in this big bad weird internet, i am focusing on the right part

[@sambegley1273]

Hank: "I'd like to make sure I don't [make a mistake like going to Epstein's island]." Allen: "Well you're already here, so you've already made the same amount of mistake." I love the implication that Safety Third is the Epstein's island of podcasts.

[@jacewhite8540]

This -podcast- discord call has gotten so many influential KZbinrs at this point.

[@Znatnhos]

I love the subtle leak that Hank is doing a Last Meals... So excited for that to drop! I love that show.

[@Toum0]

Glad i wasn't the only one who caught that

[@Hat_shaped]

He's one of the few guests that would have very interesting answers about mortality

[@thelunaticco9320]

"Are you fucking vaping the CO2 monitor?" William 'Hank' Green 2024

[@YCbCr]

CO2, heh, mine only has an enviro (humidity, temp) and VOC sensor in it. Random number generator indeed :D A proper NIR CO2 sensor costs twice as much as these crap.

[@Real28]

Hank Greens brain is as manic, if not more than these boys and I'm here for it.

[@pissoffeachother]

Yeah I see hank in a different light now and I'd say it's 100% an improvement

[@seanvinsick5271]

I have only watched Hank on SciShow. So this is a completely new side to see of him see. It's like Dark Hank. I like it.

[@Tunkkis]

It's like watching Fred Knudsen outside of his docs talk about anime pussy and his ginormous nuts.

[@zane_sadauskis]

More like dank hank

[@lakovkreativity1451]

He's been doing his own thing on his personal channel for a while, I think I'd only heard him curse once ever since then and I was shocked and then I had a big smirk after 😂

[@rocketsocks]

You might like his appearance on Dimension-20's side quest "Mentopolis", the first episode is available free on youtube.

[@challennarose270]

watch og vlogbrothers. the bros were feral that first year absolutely wild to watch growing up 😂

[@goatcat2737]

Ok "The Voyager is someone's horcrux" is an amazing idea to build off of

[@myrealusername2193]

Just randomly flies into a sun lol

[@jbca]

Spoiler, but that’s a not-insignificant plot point in Harry Potter and the Methods of Rationality, which depending on the metric you choose, may be considered the most popular HP fanfic ever. (Although it was written as a piece of philosophical propaganda as much as anything.) I was reading a follow up meta fanfic where they chased down the probe using magic-enhanced spaceflight a couple weeks ago. Although voldy in that story also has some invisible lighter than air horcuxes floating in the upper atmosphere, and one made of enchanted lead (iirc) that was dumped through a volcano where the earth’s crust is thinnest so it’ll float around the mantle forever, which might be harder to hunt down than voyager.

[@emmettbrown3463]

@@jbca im pretty sure that's literally the context of that phrase, it's referred to in the video itself

[@jbca]

@@emmettbrown3463 oh cool, I haven’t gotten to that part of the video yet thanks

[@NoConsequenc3]

@@jbca all of that sounds dumb as hell if you form again around the horcurx... you'd spawn in lava, or space, or the ocean depths, or the upper atmosphere (this last one is survivable as a wizard probably tbh)

[@TheHookUp]

Love this, top 3 Safety Third episode ever. When I was a high school science teacher I got a massive amount of street cred with my students by telling them that Hank Green was in my college chemistry class (true story). My chemistry lab partner (different class) also created the first quantum machine, by association I've basically got a Nobel prize... does it work like that?

[@RandomUser7777777]

Hank fits too good with the crew it’s just wonderful

This is easily a top 10 safety third episode

[@theelectricant98]

top 1

[@jamieDodds56]

There was a phase at my college where people ripped out old transformers to make really shitty flails. Luckily our physics teacher found out and put a harsh stop to that with a quick science for them. I genuinely think he saved some lives that day

[@wonder_platypus8337]

It takes a wizard to teach the mages how the magic is done.

[@MrMctastics]

You must teach the young padawans the ways of the force

[@MrNoipe]

That's fine unless they were connected to power.

[@Fantasticanations]

If anyone's curious, apparently the PET scan machines start at an 'affordable' ~$300k and can go up to $750k+ for the 'premium premier in imaging technology'.

[@LogjammerDbaggagecling-qr5ds]

That's actually not as expensive as I thought. MRI machines can apparently cost up to 2 million dollars.

[@ConnorTheRed65]

PET scan: Radioactive fluorine is attached to glucose which is injected into a vein, glucose is taken up by cells that use glucose for energy (most organs, but significantly more in cancer cells). Radioactive fluorine decays and emits positrons, positrons collide with nearby electrons and undergo annihilation, firing two photons at 180 degrees apart. Those photons hit the ring of crystals which surround the patient, crystals convert photons to electrical signal, signal sent to computer to reconstruct into image. Overlay map of radiation events over a CT scan acquired concurrently. They're super neat!

[@CockatooDude]

Ahh ok this makes way more sense now. The way they were talking about it was kind of nebulous.

[@FishyBoi1337]

Hank Green?!??? Oh I know I gotta watch this in full

[@Tunkkis]

Do you regularly just leave these half-watched?

[@FishyBoi1337]

@@Tunkkis look man, I don't judge how YOU consume content

[@CockatooDude]

@@Tunkkis Yeah man they're long as hell there other things I also want to watch.

[@CommonBovine]

Hank fits so good with this group 😂 Allen "What's the first thing that went through your mind..." Hank "Piano strings." Lol so good. *Tires screech* *Car collision ensues*

[@Blend3rman]

That joke is so underrated, Hank is quick asf

[@harwil32]

thanks for finally bringing Nigel back!

[@jaegerjackz]

The yard and safety third posting a hank green podcast on the same day is wild.

[@outbakjak]

I've never laughed so many times at a Safety Third episode. Hank is so goddamn funny, and his chaotic good nerd energy matches up so well with theirs. Amazing 10/10 podcast episode

[@OyvindBjorgo]

"I have terrible news." Hank and I would get along swimmingly.

[@OyvindBjorgo]

Also, regarding the helium question: you would of course need an average for each test participant, which means you'd need at least a few tens of both helium and air (the control).

[@thatgreenguyplayer2]

"My teacher really hated me for some reason..." "because you're *William Osman*, no I get it." Hank Green winning the internet over and over. Man was on fire just before his standup, can't wait to see the show.

[@jacoL8]

coming from the yard straight to this ... today is hank green day it seems

[@connorhatchs]

literally same. what a good day lol

[@Mikeological]

The poem Alan referenced was "Harlem" by Langston Hughes. The play "A Raisin in the Sun" by Lorraine Hansberry about the same themes gets its title from one of the lines in "Harlem." I'd recommend both for anyone who didn't read them in school, they're good. Also y'all should get Dr. Mike on the show and see what he has to say about your questionable yet amusing practices lmao.

[@vigilantcosmicpenguin8721]

I love how they're like an hour deep into a conversation about the stupidest shit and then Allen just pulls out a Langston Hughes quote.

[@GuyPerson-jt9tv]

Watching a podcast where the hosts are talking about death right at the moment that you find out your grandma just passed away is a surreal experience.

[@5hirtandtieler]

Rip gram 😢

[@Leadvest]

It's okay, that's why you get two.

[@piratecheese13]

sorry to hear it my guy

[@joelnikula3545]

​@@Leadvest ooof

[@vigilantcosmicpenguin8721]

Well, now you'll never have to tell her if you ever get cancer.

[@DonutShoes]

Hank mentioned Last Meals, y'all need to get Josh on the podcast

[@suryat5785]

I'm so excited for that Last Meals episode now

[@YawnBlue]

Ooh it's Hank Green showing up on all the podcasts like he talked about doing a while ago! :O

[@itsvondell]

he really meant that

[@oafkad]

I agree with Hank. I've talked about this for years. Your micro self dies every single night, your macro self continues on.

[@nullvoid3545]

There is A great video by Jacob Geller that covers head transplants, and where ones "soul" or "self" resides when their brain turns off. It includes A clip from one of the new wolfenstien games where someone makes this exact case, that who you are when you wake up is not the same instance of "running" your brain and so it is not the same you. It was my first exposure to this fascinating fact.

[@Evelyn80264]

I've had the same idea. your consciousness ends when you sleep, but a new one is made with all the same memories stored in your brain, and all the same thinking and logical processes because it's all just a neuron circuit. so with teleportation, you would end the conciseness entering the teleporter, then create a new, identical one at the location you are recreated at. so from an outside perspective it's the same person, and as the person teleported, you have an identical brain so you know what happened and are the same person, but there is kind of another consciousness lost in the process.

[@NoConsequenc3]

@@Evelyn80264 there is no reason why any arbitrary change, even in external sensory input, isn't the level of change needed for a "new" you. All change is death. All time is change. Death is an extant form of life, in many ways.

[@lapispyrite6645]

1:00:30 Hank threatening William by Hank making sure Willy know that he can break his bones

[@Jim-Stick]

This absolutely made my day! Hank's story was amazing. I bought the Microcosmos microscope. That microscope changed my life. My friends and family were harassed with cool pictures I took. The big part for me was realising how small we all are. We are just blips doing our best to survive and be around for a bit longer. You guys have had so many great people here. Thank you for what you do.

[@LaEmporoar]

Never thought I'd hear Hank Green say " And then you gotta do 9/11 to kill Voldemort" LOL

[@obant]

I am a Testicular cancer (tumor migrated to my chest, no ball chopping), kidney cancer x3 (going in March to confirm its back then the whole kidney is getting removed), and have such bad Ulcerative colitis, they removed my colon so I didnt develop colon cancer. I agree with the list. I'm here watchin g, typing, no problems. No thank you to bleeding bones.

[@daniellovett577]

A good first step to testing helium farts would be just taking in helium via your mouth and then making the mouth sounds.

[@100GTAGUY]

A man of true science indeed

[@BelindaShort]

Just immediately into fart talk with Hank

[@shadowstorm657]

Give some credit, a reference to Epstein Island THEN a fart joke.

[@Voyajer.]

Is that an actual NDIR CO2 sensor? Apparently a lot of those use some other sensor to approximate CO2 rather than measure it directly.

[@Zelmel]

It's kind of amazing how much heavy medications will change someone's hair. Hank shows that a lot, not necessarily in a bad way but since he's so prominently on a visual medium it's noticeable.

[@jakass]

They really need to let Nile out of the cellar, he is running out of oxygen and the chemicals to produce more of it

[@NightVision387]

"Nothing causes cancer like cancer treatment" -Hank Green

[@YellowTailHorse]

This is crazy, they got Vsauce now a Green brother! This was hilarious !

[@GolenCheeseIt]

If you’d have told me a year ago that the Hank Green episode would be the first to make my tear up laughing, oddly enough, i think i might’ve believed you

[@James_taylor810]

Well it happened for me

[@aarongagne8918]

I have type one diabetes and have always thought it would be ironically hilarious to get a small, stable insulinoma, which is a tumor that produces insulin, and have them sort of balance out

[@TheNameIsBeard]

Regarding the oxygenated fluid breathing, the need to breathe doesn’t come from lack of oxygen, it’s because of the buildup of Co2. However, for someone that has trained to hold their breath past the urge to breathe, theoretically they could hold their breath longer. Maybe y’all just exposed David Blaine😅

[@JD2jr.]

Well, the **need** to breathe is indeed from lack of oxygen, the impulse to breathe comes from high co2 concentration.

[@Evelyn80264]

@@JD2jr. yes, but all are technically true. yes you need to breath to get oxygen, and yes you feel the need to breath from high co2, but also yes you need to get rid of that co2 as well. it is a waste product after all, you can't just keep pumping in more oxygen without getting rid of the co2

[@AtomicSniper22]

@@Evelyn80264also too much co2 will make your blood acidic, which is bad

[@wolfferoni]

The fact that Katherine goes to all of his shows and laughs the hardest is adorable

[@JD3Gamer]

I had Aplastic Anemia treated with a Bone Marrow Transplant. The process for me was less severe compared to someone with Leukemia because my bone marrow was already weakened. I got 5 doses of Chemotherapy and 1 dose of radiation to kill what was left of my marrow. My new bone marrow came from someone who had an 8/8 match with me which is very fortunate. What’s nice about bone marrow transplants is that you get to ween off the immune suppressant drugs that you need for other organ transplants. This is because you have a completely fresh immune system. When I say completely I mean it. I had to get re-vaccinated for every disease that I had been before the transplant. Bone Marrow Transplants are not perfect but they are a very matured process that’s been around since the early to mid 20th century.

[@johndillion5804]

this is such a whiplash start

[@Ewr42]

seems like hank not only knew what he was getting into, but came prepared to fight back

[@SnarkNSass]

I was doggedly determined to watch the whole video! Seven interruptions, came back every time ❤

[@2pppppppppppppp657]

I'm very glad Hank mentioned his thoughts about consciousness, because while I don't think sleep is enough to end and create a new consciousness, I do fear that that's what happens under general anesthesia

[@DrQuestern]

I really like how the yard episode came out 3 hours earlier, so we got to experience the oxygen up your butt lore in the correct order. The yard was an introduction to the idea, and this one is the further development. Such a beautiful story!

[@vigilantcosmicpenguin8721]

It felt really nice to hear William talk about college. I also did everything right, applied to like seven colleges, and only got into my safety. It's almost cathartic to know that William Osman did the same thing, and he turned out... actually, maybe that's not alright.

[@EostrixOfficial]

The random bouts of existentialism and laughter I felt were a roller coaster. Love safety third

[@LostLargeCats]

Hank is way more candid and dirty minded than I expected. XD

[@Zile.e]

Spoilers for last meals. But I've been watching all the podcasts Hank's appeared in over the past week. Its a wonderful delight to have all these podcasts

[@darnikrshowtime]

Holy. Shit. Did Hank Green really just say what I've been talking about forever??? I have posed that teleportation question to friends, it's always a good one, and I always bring up the discontinuity that you get with sleep. That is. How did. I am floored.

[@jordantaylor4390]

“How did you get your skull scan?!” Was fully expecting William to say “Well I built an X-Ray in my garage!”

[@zachheilman784]

13:30 I think Diana (Physics Girl) went to MIT. (Hopefully she is able to make a full recovery from her health issues)

[@bueb8674]

This is truly one of the episodes of all time

[@alexbutler1944]

Boy howdy you guys are hitting your stride. Favorite podcast of about 5 I listen to. Also, this Nigel is the perfect complimentary ratio of knowledgeable to unhinged.

[@aurora_dawn123]

This is such an awesome mix of people, I'm so glad I found this channel

[@Malzanar2010]

“Helium is unfartable” is a combination of words I never thought I’d hear 🤣🤣🤣🤣

[@izik2354]

"If you want me to die in your cult, you gotta pick a different flavor."

[@jacewhite8540]

God this was such a quote factory this episode!

[@amazingd0206]

this is one of my favorite episode from safety third, keep up the good work!

[@talkingdot]

I am so happy to see Hank here Love that man this is a fun episode

[@LostLargeCats]

I think this is my favorite episode so far. Hank seems like so much fun to be around.

[@Brok3nC4rrot]

Re: holding breath with oxygenated colon-fluid: I think no - the CO2 would still diffuse into your lungs causing a gasping response to relieve the pain, at the same rate as it does when you hold your breath normally. it's not lack of oxygen your lungs hate, it's an excess of CO2 (which is why carbon monoxide is so dangerous, your body literally can't tell the difference between it and regular air).

[@Yugemostsuj]

Not to be pedantic, but it's actually your blood that hates carbon dioxide. Your body responds to changes in ph to detect an abundance of CO2 rather than a lack of oxygen. That's why all odorless gases are a danger. Carbon monoxide on the other hand, permanently bonds to hemoglobin, making you unable to absorb oxygen.

[@MyNameIsNyx]

hank has indeed be greening. time for a yard x saftey third type of thing

[@connorhatchs]

I wish

[@MysterySteve]

There are very few experiences on earth that feel awesome in the same way as hearing a very experienced scientist answer silly questions happily

[@JoshuaCampbelll]

ahhh you guys are so funny, each episode slowly gets even more crazy >-< I love it. Keep it up!

[@Kai-Made]

I am not sure what I expected with H.G on here, but fart jokes, and potty humor was what we needed.

[@sativaburns6705]

Hank! Does this mean we get safety third guest spots on Tangents?

[@landonhicks4897]

holy shit, it's Hank Green

[@gcm_0]

Awesome podcast to listen to before going to sleep, thanks team

[@CapnBenN]

My buddy and I got our tickets for this years open sauce and we are stoked!

[@madsringswaldegan1058]

His chemo curls are so fun! I forgot that that happens!

[@MrPruske]

i love this show congrats on the new hair, Hank ;)

[@cjmassino]

I have that same CO2 meter and if you haven't calibrated it, it gets way off. It automatically sets a new baseline after 24 hours, and then you need to hold down all three buttons until it starts counting down from 200. Set it outside or in a window while it counts down.

[@epicthief]

This is by far the only podcast i have to put headphones on for, mostly beacuae people ask to many questions about whay they overhear

[@Tony3821]

This was such a great episode im so happy he came on

[@theoccasionalsnickerdoodle2525]

I have been waiting for so long for hank to be on the pod this is a godsend yipeee

[@matthewsharp1178]

This was probably one of the best if not the best episode so far

[@jogadorjnc]

BTW, you can't just turn the magnet in an MRI machine off The magnet is always on

[@hexen36]

You can in an emergency. It's called quenching. It vents the liquid helium to rapidly raise the temp to non-superconductive levels and the magnetic field dissipates. It is very expensive and time consuming to do the maintenance to reset it, so it's really only done if someone were actually dying because of the magnet.

[@jogadorjnc]

@@hexen36 I guess that makes sense, I must not have heard of it because it's probably very situationally helpful: in most cases when something goes wrong it goes wrong too fast to quench

[@AntiBlueFox]

1:24:00 I was there for that! That was such a wonderful moment. Love you Hank. 💙

[@Rmx2011]

I already love the guest of this episode!

[@martinnoreallymartin3661]

I love the dynamic between this and the yard. In the yard, Hank seems like the smartest person in the room because everyone around him is stupid. But here he seems just as stupid as everyone else. Because they're all very intelligent people that just act stupid.

[@sitroentje232]

Thank you!

[@PokefreakMaster333]

Hank brings life everywhere he goes

[@user-ys1sq7mp2k]

Incredible as always

[@Elaine-bz3yt]

I never thought I’d see these folks together, but here we are.