A time traveler's survival guide. The vertical green bars are the only times in Earth's history with enough oxygen to breathe (hypoxia) and low enough to avoid oxygen toxicity (hyperoxia):
Kids
Submitted 8 months ago by fossilesque@mander.xyz to science_memes@mander.xyz
https://mander.xyz/pictrs/image/627670e4-2765-445c-9e19-559f209caf50.webp
Comments
aramis87@fedia.io 8 months ago
Tar_alcaran@sh.itjust.works 8 months ago
That blue bar is extremely pessimistic. Humans can survive pretty well with 15% oxygen, and do so in several places in the Andes mountains, China and India.
Humans also don’t really have a problem with 30% oxygen, although that will definitely bring down the life expectancy.
On the other hand, note how those pointers talk about giant insects, megafauna and other scary things. Those are a much bigger problem than the air you’re breathing.
Eheran@lemmy.world 8 months ago
To add to this: At 3’500 meters above sea level, the pressure is down to 2/3 atmospheres. So instead of 21 kPa of oxygen partial pressure, it is only 14 kPa. So like breathing 14 % oxygen at sea level. People live at that height.
qjkxbmwvz@startrek.website 8 months ago
Dumb question, but in a very oxygen rich environment, can you just breathe through a paper bag or something? Mostly just breathe your own exhaled CO2 with a bit of O2 leaking in?
msage@programming.dev 8 months ago
So like how big mosquitos are we talking about?
About crabhead ticks?
refalo@programming.dev 8 months ago
bring down the life expectancy
why?
PeriodicallyPedantic@lemmy.ca 8 months ago
I’m super skeptical of this.
You don’t get oxygen toxicity, even breathing pure oxygen, unless you’re under significantly more pressure than atmospheric pressure…
So either this graphic is wrong/misleading, or the atmosphere was more than double current pressure for most of earth’s history… Which I’m pretty skeptical of.
peto@lemm.ee 8 months ago
My grandfather would tell stories of how the planet used to be covered in plants and you could breathe the air outside. Back when the sky was blue.
BuboScandiacus@mander.xyz 8 months ago
Where is this from ?
peto@lemm.ee 8 months ago
It is (I hope) an original. Though the form “my grandfather would tell stories” might be bordering on cliché.
Professorozone@lemmy.world 8 months ago
Sounds to me like Dad needs a little credit here.
Delphia@lemmy.world 8 months ago
Even if you arent good at improv “Thats a good question! I’m not sure, we should look that up!” Is an easy go-to.
Then after shower and get into bed we look up todays questions.
Professorozone@lemmy.world 8 months ago
Sounds like you need some credit too!
LotrOrc@lemmy.world 8 months ago
First off, weird to point out that they’re “age appropriate”
If your kid reads above the age level and understands it that’s generally a good thing
Number two I don’t get why this is such a weird concept on how to explain things to a child. Seems pretty normal and “age appropriate”
ripripripriprip@lemmy.world 8 months ago
Not only that, it’d be better to ask the kid why oxygen tanks are needed on spacecraft, then ask why we don’t need them here on earth.
It’s a weird post, in general.
AngryCommieKender@lemmy.world 8 months ago
Yep. I was reading at a 6th grade level in 1st grade, and had advanced to university level comprehension by 5th grade. WTF was an “age appropriate book?”
I’m pretty sure that those people would have been incensed, if they knew that I chose TLotR as my 1st grade book report. (This was in 1985, so while there was an animated movie, it didn’t cover the entire three books, so I had to read them.)
waz@lemmy.world 8 months ago
I assumed age appropriate was regarding content not difficulty. It is still a weird thing to emphasize though.
cheers_queers@lemm.ee 8 months ago
I’m extremely impressed that you were able to read and understand LotR at 7 years old. i read them at 15 and loved them, but definitely had trouble at the council of the elves etc
psud@aussie.zone 8 months ago
There’s some old sci fi that I read as a kid that I wouldn’t give to mine at the same age. Too much sexism, racism, incorrect astronomy
LotrOrc@lemmy.world 8 months ago
With sexism and racism I feel at least that’s a good place to have a conversation with your kid and show them why exactly it is wrong though uk?
Rozz@lemmy.sdf.org 8 months ago
Get some perri-air mel brooks sniffing perri-air
fsxylo@sh.itjust.works 8 months ago
God damnit I missed that pun until now.
Zink@programming.dev 8 months ago
This is just your “one of today’s lucky 10,000” moment.
dogsnest@lemmy.world 8 months ago
So, where do I find this dad, as opposed to, “Dunno, ask yer mom, and fetch me a
bud lightcoors.”?joyjoy@lemm.ee 8 months ago
They’re what you call “nerds.”
GraniteM@lemmy.world 8 months ago
They make great partners, because their spirits come pre-broken.
blanketswithsmallpox@lemmy.world 8 months ago
And they tell you to get whiskey or rum, not Coors.
Or a Coors. Who cares. It’s alcohol.
Also how many whys does it take to get to the big bang and final we can’t know before popping we need better instruments or math so difficult it’s impossible for even mathematicians to pretend to make sense of besides ‘maybe, the math works anyway.’
ayyy@sh.itjust.works 8 months ago
Almost everywhere…if all the men in your life are really that shitty it’s time to prioritize getting the fuck out of whatever community you’re stuck in.
Got_Bent@lemmy.world 8 months ago
I was both of those dads.
“Go get me a beer and let’s figure out the answer to your question!”
zea_64@lemmy.blahaj.zone 8 months ago
That’s awesome. I love weird questions with weird but accurate answers.
P4ulin_Kbana@lemmy.eco.br 8 months ago
Isn’t the ocean that produces most oxygen?
Glitterbomb@lemmy.world 8 months ago
Yes, the ocean grass
Doxatek@mander.xyz 8 months ago
Plankton
aqwxcvbnji@hexbear.net 8 months ago
yes, fytoplankton, but those are plants too. THey’ll be extinct in +/-500 years because of the ocean acidification, which is a result of the sea absorbing CO2 from the atmosphere.
P4ulin_Kbana@lemmy.eco.br 8 months ago
What can I do to prevent this?
averyminya@beehaw.org 8 months ago
The algae in it, specifically I believe
refalo@programming.dev 8 months ago
I’m very disappointed there was no praise for dad at the end of all that.
Got_Bent@lemmy.world 8 months ago
We don’t do that.
My kid is twenty three years old. I raised her alone. Crazy, I know, but she and I are pretty close.
To this day, I get dozens of adulating text messages on mother’s Day for “playing both roles.”
On Father’s Day, total utter crickets except from my daughter herself.
Fathers are here to donate sperm and fund other lives. That’s it.
AnarchistArtificer@slrpnk.net 8 months ago
Happy belated father’s day, from someone who is glad you made this comment. I appreciate you highlighting this issue, because this is something that is sorely lacking in progressive discourse; it’s getting better, I think, but that is likely due to people like you helping people like me to understand how caring fathers are often not respected or appreciated by the world.
tastysnacks@programming.dev 8 months ago
As far as I can tell, the whole thing was praising the dad.
Ripper@lemmy.world 8 months ago
Phytoplankton be like, what’d he say fuck me for (^_-)
HowMany@lemmy.ml 8 months ago
Aim her at Asimov and Clarke.
Dorkyd68@lemmy.world 8 months ago
[deleted]recklessengagement@lemmy.world 8 months ago
Never been a big fan of kids, but for some reason this post clicked with me. I think I get it.
P4ulin_Kbana@lemmy.eco.br 8 months ago
You sure about that? Having a kid means that you will have to dedicate your money and energy (working). But I hope this doesn’t stops you from being a parent.
Dorkyd68@lemmy.world 8 months ago
Dude… just like… think before you speak to a stranger on the internet. You assume. You assume I’ve never raised a child that wasn’t mine in a relationship that lasted 10 years. You assume I didn’t wake up 30 minutes early every morning to drive my exs’ kid to school for 5 years. You assume I don’t have my nieces and nephews over for sleep overs regularly. Mostly you assume that I don’t take the “financial possibilities” of having a child into consideration. Just like shut the fuck up. I’m sorry, but be quiet. The adults are speaking and you don’t know of what you speak. You spew, you throw up nonsense. Be quiet 🤫
Mostly, mostly you may assume I’m female. I’m a 40 y/o male that aches to have a child to love and raise. I yearn for the day when a child says “I love you dad” to me again. Cause it happened with my exs’ child and it’s like a hit from heroin, instantly addicted but in the best way possible
Comment105@lemm.ee 8 months ago
Why? To deny them bacon and eggs and instead hand them dehydrated bananas on whole grain pancakes?
10_0@lemmy.ml 8 months ago
This doesn’t have 105 comments on his account, mods ban him
Transporter_Room_3@startrek.website 8 months ago
Oh look, it’s buzz-Killington.
“Not on this planet… yet.”
Or if you want to go full crash course, “For now, but that hasn’t always been the case and might not be in another million years” and explain things like Oxygen Collapse/Great Oxygenation during the proterozoic when oxygen levels first shot up and killed off a ton of oxygen-hating things.
MeaanBeaan@lemmy.world 8 months ago
Not on this planet… Yet
icedcoffee@lemm.ee 8 months ago
You know that lil mf reading the expanse.
lightnsfw@reddthat.com 8 months ago
“No parenting class would have ever prepared me for having my kid ask me why we don’t need artificial oxygen storage.”
No, but a grade school science class would have…
EatATaco@lemm.ee 8 months ago
Yeah this is mindboggling. It wouldn’t have ever crossed her mind to tell her kid that they don’t need oxygen canisters on this planet? I mean, what the dad said is good, as it opened the door to some more learning… but wow.
Comment105@lemm.ee 8 months ago
Never underestimate just how clueless the general population is about how the world works. More than you’d expect would prove to not really grasp even the most basic mechanisms of their environment.
People turn to religion for a reason.
To the majority of people, understanding the world beyond “inexplicable god magic” is difficult to learn good-for-nothing trivia unless it’s needed for a good grade and maybe a job if you’re cut out for it.
Even the non-religious seem to make a habit of thinking like this. The kind of “not a Christian” alcoholic that is completely disinterested in the actual philosophies that allowed for a world where open disbelief is safe, and vocally in favor of “rights” of some sort for currently relevant minorities, with maybe a rare acknowledgement of some surface-level misunderstanding of humanitarian ethics.
0xD@infosec.pub 8 months ago
You completely missed the point.
This was about the elegance of the answer, not the answer itself.
AVincentInSpace@pawb.social 8 months ago
My first thought, when I heard that question, would be “do we have a backup in case the naturally produced oxygen for some reason goes away?” like some families have an emergency supply of food or water, not that the child did not know that Earth’s atmosphere naturally contains oxygen thanks to plants.
AVincentInSpace@pawb.social 8 months ago
I mean… I know perfectly well that plants produce oxygen, but it never would’ve occurred to me that that was waht a child asking about oxygen tanks wanted to know.
bluewing@lemm.ee 8 months ago
It wasn’t about wanting to know about photosynthesis, the original question was really about the oxygen tanks. Kids very often are looking for a simple answer. Even though the real answer is far more complex.
As a Dad who helped raise 4 Daughters, (a CPA, a Triage Nurse, PHD Mech Engineer, and a Computer Forensic Expert for the FBI), teaching at home is a crucial part of parenting. Beyond offering a wide variety of materials to learn from, (we built a library of books that filled my office), and being ready to answer those oxygen tank questions, you need to show and make asking those questions and learning from them fun.
TheFriar@lemm.ee 8 months ago
Right? This seems like a…strange problem to have. “Why don’t we need gas masks when we go outside?” “Why don’t we need to worry about rivers of lava?”
…because those aren’t problems on this planet. Lava stays underground unless there is an active eruption and the air outside isn’t toxic. Pretty simple.