Recent comments in /f/todayilearned
mahmoudhanine9t7 t1_jdn4wga wrote
Reply to comment by BananaDilemma in TIL of the Bolvano Train Disaster which claimed the lives of more than 500 people in 1944. After the train became stalled in a tunnel, the passengers and crew succumbed to carbon monoxide poisoning when the locomotives attempted to continue and filled the tunnel with smoke. by MorsOmnibusCommunis
Yeah, dying in a tunnel filled with smoke from a stalled train is definitely a step up from getting hit by a meteorite.
JohnnyKaboom t1_jdn4t2t wrote
Reply to comment by MuggyFuzzball in TIL: Thanks to poor internal communication at NASA, information about a spacesuit water leak wasn't properly communicated. Later, Astronaut Luca Parmitano almost drowned on a July, 2013 ISS space walk, his helmet filling with several liters of water before they could get him back inside. by OvidPerl
Of course, happy to help. We didn't talk about Luca too much, mostly how to conduct research in space but it was certainly an interesting interview. https://youtu.be/ZJCvWxPnw60
JeTePlumerai t1_jdn4o5u wrote
Reply to comment by Due_Insurance8159 in TIL, the placenta that forms with a fetus isn't created by the mother. It grows from the fertilized egg and some fetuses actually develop outside the uterus attached to the intestines in the body cavity. by darw1nf1sh
It’s called placenta percreta. The risk to baby comes from the need to deliver prematurely. The risk to mom is >!bleeding out.!<
Oro-Lavanda t1_jdn4isa wrote
Reply to comment by MedicalJargon-itis in TIL: Thanks to poor internal communication at NASA, information about a spacesuit water leak wasn't properly communicated. Later, Astronaut Luca Parmitano almost drowned on a July, 2013 ISS space walk, his helmet filling with several liters of water before they could get him back inside. by OvidPerl
yo this makes so much sense. I visited a mountain town in colorado once for a ski trip and I was trying to boil some ramen on the stove. pacakge said like 3-4 minutes but it took me 7-9 minutes or more just to boil it properly! I thought the stove in the place I stayed at was just a low quality one.
UpInWoodsDownonMind t1_jdn4fq3 wrote
Reply to TIL that Australia's longest serving aircraft carrier never fired a shot in anger during her service, but did kill over 150 Allied soldiers in two separate accidental ramming incidents by nyckidd
Now imagine what Australia can do with the $300 billion nuclear submarines once we get them in 2 decades...
coolpapa2282 t1_jdn4f82 wrote
Reply to comment by fireandiceofsong in TIL: Thanks to poor internal communication at NASA, information about a spacesuit water leak wasn't properly communicated. Later, Astronaut Luca Parmitano almost drowned on a July, 2013 ISS space walk, his helmet filling with several liters of water before they could get him back inside. by OvidPerl
In The Enchanted Forest Chronicles (the first book specifically) there's a princess whose family keeps trying to get her into a fairy tale situation but it never works. They invite a wicked fairy to her christening, but the fairy just eats a lot of cake and dances with her uncle all night. She helps an old lady in the woods who's a powerful witch in disguise, but the blessing she gets is to never have any cavities. Etc.
Beli_Mawrr t1_jdn4bb1 wrote
Reply to comment by Paladin327 in TIL: Thanks to poor internal communication at NASA, information about a spacesuit water leak wasn't properly communicated. Later, Astronaut Luca Parmitano almost drowned on a July, 2013 ISS space walk, his helmet filling with several liters of water before they could get him back inside. by OvidPerl
Right, that's what I'm saying. Pop a tiny hole in it, Watney-style, then the vacuum of space hopefully sucks the water out through it. When it's done, plug the hole again. If it gets bad again, open 'er back up!
snowbirdnerd t1_jdn46y4 wrote
Reply to TIL, the placenta that forms with a fetus isn't created by the mother. It grows from the fertilized egg and some fetuses actually develop outside the uterus attached to the intestines in the body cavity. by darw1nf1sh
There are so many things that can go wrong and all these bills banning abortion ignore them. Some of the worse are defects that aren't dangerous to the mother but will absolutely kill the baby after it's born. Ectopia cordis is where the baby's heart develops outside the chest cavity, it doesn't cause problems in utero but is deadly once born. Only a few surgical specialists in the world can even try to treat it.
It is fucking monstrous to force a woman to carry a child to term knowing that it will die hourse if not minutes after birth.
[deleted] t1_jdn455z wrote
Reply to comment by Alex15can in TIL that Chinese Food was introduced into America during the California Gold Rush, starting in 1848. As 30,000 immigrants had arrived from the Canton region of China, the restaurants gave the predominantly male population a connection to home and provided gathering places for the Chinese community. by jdward01
[deleted]
ydoc04 t1_jdn3yoh wrote
...shoe sizes ARE based on the size of...
BananaDilemma t1_jdn3jpy wrote
Reply to TIL of the Bolvano Train Disaster which claimed the lives of more than 500 people in 1944. After the train became stalled in a tunnel, the passengers and crew succumbed to carbon monoxide poisoning when the locomotives attempted to continue and filled the tunnel with smoke. by MorsOmnibusCommunis
I suppose it's not the worst way to go but damn that's insane.
camwhat t1_jdn3gra wrote
_Haverford_ t1_jdn2pkz wrote
Reply to comment by britt_is_questioning in TIL that Chinese Food was introduced into America during the California Gold Rush, starting in 1848. As 30,000 immigrants had arrived from the Canton region of China, the restaurants gave the predominantly male population a connection to home and provided gathering places for the Chinese community. by jdward01
Honestly, I was kinda bummed. I was hoping for like, Sichuan plantanos. But stepping into a Quito Chinese restaurant and having it look EXACTLY like any Chinese restaurant in the US was quite a surreal experience. I even think there was an owner's kid doing homework in a booth!!
MuggyFuzzball t1_jdn2ml0 wrote
Reply to comment by JohnnyKaboom in TIL: Thanks to poor internal communication at NASA, information about a spacesuit water leak wasn't properly communicated. Later, Astronaut Luca Parmitano almost drowned on a July, 2013 ISS space walk, his helmet filling with several liters of water before they could get him back inside. by OvidPerl
That is incredible. Thank you interviewing him. There is nothing better than a direct source.
marsokod t1_jdn2kuc wrote
Reply to comment by Smartnership in TIL: Thanks to poor internal communication at NASA, information about a spacesuit water leak wasn't properly communicated. Later, Astronaut Luca Parmitano almost drowned on a July, 2013 ISS space walk, his helmet filling with several liters of water before they could get him back inside. by OvidPerl
It won't work, there is a protection for that. You can open it but then the suit will prevent air from leaking out there. Better lose your hand than the whole suit.
The only option was to drink it, but unless you absolutely know where the leak is from it can potentially kill you.
_Dnikeb t1_jdn2keh wrote
Reply to comment by camwhat in TIL, the placenta that forms with a fetus isn't created by the mother. It grows from the fertilized egg and some fetuses actually develop outside the uterus attached to the intestines in the body cavity. by darw1nf1sh
This article explains it very well.
Here's a shorter version of the story: some viruses exist as virions, ie. the virus itself is hidden within a little envelope of phospholipids. On the surface of this envelope, there is a protein called syncytin that can merge cell membranes (also made of phospholipids). Its role is to fuse the virion with the cell membrane so that the actual virus inside the virion can trojan horse itself into the cell and infect it. Infection consists of the virus releasing its DNA in the cell's cytoplasm, turning the whole thing into a virus factory. Sometimes, the virus' DNA gets fused together with the host cell's DNA. When that happens, that's what you'd call a retrovirus.
Now, At some point some 200 million years ago, for some freaky joke of nature, a virus entered a mammalian egg cell, transitioned into a retrovirus, that egg cell got fertilized, and the result was a mammal that could produce its own syncytin and thus have the ability to merge cell walls. That allowed for the evolution of a structure known as syncytiotrophoblast, which develops on the point of contact between the embryo and the womb and is basically created by many embryonic cells merging together into a single cavity. The whole point of this structure is to act as a buffer zone, allowing nutrient exchange between the mother and the embryo while at the same time preventing the mother's immune system from reaching the embryo and killing it. Thus the placenta was born.
Paladin327 t1_jdn26qf wrote
Reply to comment by Beli_Mawrr in TIL: Thanks to poor internal communication at NASA, information about a spacesuit water leak wasn't properly communicated. Later, Astronaut Luca Parmitano almost drowned on a July, 2013 ISS space walk, his helmet filling with several liters of water before they could get him back inside. by OvidPerl
It’s not like poking a small hole in a space suit would cause instant decompression of the entire suit. The difference in pressure isn’t big enough for that. There was a 2mm hole on a spacecraft docked with the ISS, and it was determined that was no danger to the station and could easily be repaired
effemeris t1_jdn20ud wrote
Reply to comment by The_Flurr in TIL: Thanks to poor internal communication at NASA, information about a spacesuit water leak wasn't properly communicated. Later, Astronaut Luca Parmitano almost drowned on a July, 2013 ISS space walk, his helmet filling with several liters of water before they could get him back inside. by OvidPerl
Yep, the real risk is getting The Bends
effemeris t1_jdn1x6d wrote
Reply to TIL: Thanks to poor internal communication at NASA, information about a spacesuit water leak wasn't properly communicated. Later, Astronaut Luca Parmitano almost drowned on a July, 2013 ISS space walk, his helmet filling with several liters of water before they could get him back inside. by OvidPerl
Serious question: Why don't EVA suits have an emergency air-straw?
I know that drowning is one of the biggest risks on EVA (water leaks, coolant leaks, vomiting, etc), and I would have assumed that the simplest safety feature would be a simple tube that the astronaut could reach with their lips, and would provide enough air to live, even if the helmet otherwise filled with liquid.
Is there some technical or practical reason why they don't?
Zoethewinged t1_jdn1nzj wrote
Reply to comment by Mosenji in TIL, the placenta that forms with a fetus isn't created by the mother. It grows from the fertilized egg and some fetuses actually develop outside the uterus attached to the intestines in the body cavity. by darw1nf1sh
It's why your fingers go wrinkly when you're wet
TheRealTwist t1_jdn1naj wrote
Reply to comment by chegg_helper in TIL: Thanks to poor internal communication at NASA, information about a spacesuit water leak wasn't properly communicated. Later, Astronaut Luca Parmitano almost drowned on a July, 2013 ISS space walk, his helmet filling with several liters of water before they could get him back inside. by OvidPerl
Can't imagine a boiling corpse would be very pretty.
Former-Darkside t1_jdn1n16 wrote
Reply to comment by darw1nf1sh in TIL, the placenta that forms with a fetus isn't created by the mother. It grows from the fertilized egg and some fetuses actually develop outside the uterus attached to the intestines in the body cavity. by darw1nf1sh
Check out the other comment…
mtled t1_jdn53f2 wrote
Reply to comment by Zombieff in TIL, the placenta that forms with a fetus isn't created by the mother. It grows from the fertilized egg and some fetuses actually develop outside the uterus attached to the intestines in the body cavity. by darw1nf1sh
The cells of the placenta are the foetus' DNA. It is not her organ, it is the foetus'.