Score
Title
15
How To Search ELI5: A Quick Reminder About Rule 7
6394
ELI5: Why does a familiar word sound unfamiliar after you overly repeat it?
388
ELI5: There's 21% oxygen in air. When we breathe out, there's still 16% oxygen in the exhaled air. Why's our lung so inefficient?
7656
ELI5 why is it that we always see so many new awesome ways to fight cancer and yet it seems nothing of it is ever being used?
2710
ELI5: Why is CTE brain damage such a hot topic in the NFL, but don't hear anything from the Rugby community?
20
ELI5: say if Kim Jon Un got assassinated; what would happen to the country?
57
ELI5 If symptoms of a cold serve the function of ridding our body of the illness, then do cold medicines that reduce these symptoms slow our recovery?
16
ELI5: how did women shaving their legs/armpits come about and why did men not do it too?
51
ELI5: That feeling you get when you’re traveling in a car and you go over a small but quick hill and your stomach has that weird sensation in it right as you reach the top and are hearing back down.
169
ELI5: A lot of toddlers have a physical reaction to eating something they really enjoy (usually a little dance of some sort) Why do we stop doing this as grown ups?
12578
ELI5:How is it that sperm and eggs can be frozen for years to be used later but we can't freeze a living person without killing them?
9
ELI5: How did it happen that the population of Oman upwards of age 25 contains a lot more men than women?
53
ELI5: Why do some plastics discolor and turn white when they are stressed/bent?
4
ELI5: Why might it be so hard for me to fall asleep again after waking up, but once my alarm goes off and I'm supposed to wake up, I suddenly can't stop hitting snooze and going back to sleep?
3
ELI5: Why doesn’t the United States have a high speed rail system?
4
ELI5 why is there so much activity with the Ring of Fire recently? How do we know which earthquakes are directly linked? Should California be as worried as the media makes out?
4
ELI5: Why do we feel the need to swallow when we are in tense situations?
62
ELI5 - Is someone born a narcissistic or is it learned behavior?
2
ELI5: For cold prevention, why are disinfectants recommended for cleaning public surfaces but discouraged for washing hands?
155
ELI5: How come the same prescription for eyeglasses produces thick "coke bottle" lenses can be used for paper thin contacts?
2
Eli5:Why are some people naturally better at fighting than others?
19
ELI5: Why does laying down help with nausea?
2
ELI5: How some people who smoke 2 packs a day have the lung film of a person who has never smoked?
17
ELI5: How are those giant prize winning vegetables, like the 150lb zucchini, grown?
2
ELI5: Why is air trapped in ice that's been still for hours?
2
ELI5: Why does "HD-ready" 720p TV panels have a resolution of 1366*768 rather than a 1280*720.
2
ELI5: Why do football coaches make substitutions in the last 10-15 mins in a game? What is the logic?
7
ELI5: Why is it bearable to look down from thousands of feet in the air, but terrifying to look down from only about 50 feet or so?
5
ELI5: When a candle burns, where does the wax go?
4
ELI5: Why when nervous does our mouth become dry ?
1
ELI5: What happens in our bodies in we get scared?
1
ELI5: Why do online transactions not require PIN?
1
ELI5:How does Modernity and Modernism affect Physical Space?
1
ELI5: Why are there still a few operating Blockbusters, and where does the money that they make go?
5
ELI5: What is the science behind ICBMs?
1
ELI5: What is the reason for people/investors to put a lot (!!) more money into a crowdfunding project than the final product is actually worth?
1
ELI5 Why do salt and vinegar flavour crisps turn my lips purple and tingly?
0
ELI5: Why do sports have seasons? Why are they not played year round?
3
ELI5: Why is it when my stomach is doing soothing, it makes a loud audible sound? What causes it and why is it so loud?
1
ELI5: how does copyright work?
1
ELI5:Why is the Atompower treaty so important to Iran?
22 wille179 It's psychological. The best explanation of it I've heard is that yawning serves to aid the brain in getting more oxygen, something to help fight fatigue. In pre-civilization tribal groups, if you're tired, it's almost certain that the people traveling/working alongside you are also tired. Yawning thus is effectively also a way of subconsciously telling the group that, "Hey, I'm tired. Are you tired? Perhaps we should all wake up a bit and pay attention to our surroundings some more." It's a group survival mechanism, and an ancient one at that, seeing as animals like dogs and cats also yawn.
5 Zombiac3 They are contagious, not infectious. No one knows the exact answer and all we really have is some speculation as to why.
1 [deleted] [removed]
1 Veritas3333 It's a sign of empathy. One sign of a psychopath is that they don't "catch" a yawn. Humans can even catch yawns from other animals. Only one other animal on earth can catch a yawn from another species... Dogs! My dog always yawns in response to my yawns!
1 Genothegreat I've also heard that yawning was a mechanism in early man to signify safety. When we were more nomadic, people at the front or back of a group of traveling people would yawn. The yawn would then pass through the group, showing that currently there was no danger.
22 0 wille179 It's psychological. The best explanation of it I've heard is that yawning serves to aid the brain in getting more oxygen, something to help fight fatigue. In pre-civilization tribal groups, if you're tired, it's almost certain that the people traveling/working alongside you are also tired. Yawning thus is effectively also a way of subconsciously telling the group that, "Hey, I'm tired. Are you tired? Perhaps we should all wake up a bit and pay attention to our surroundings some more." It's a group survival mechanism, and an ancient one at that, seeing as animals like dogs and cats also yawn.
6 0 Zombiac3 They are contagious, not infectious. No one knows the exact answer and all we really have is some speculation as to why.
1 0 [deleted] [removed]
1 0 Veritas3333 It's a sign of empathy. One sign of a psychopath is that they don't "catch" a yawn. Humans can even catch yawns from other animals. Only one other animal on earth can catch a yawn from another species... Dogs! My dog always yawns in response to my yawns!
1 0 Genothegreat I've also heard that yawning was a mechanism in early man to signify safety. When we were more nomadic, people at the front or back of a group of traveling people would yawn. The yawn would then pass through the group, showing that currently there was no danger.