关于人类有哪些惊人的事实?

Dilki Dissanayake, Writer, Psychology books and content reader (2018-present)
We only need two close friends in whom we can trust. Having too many friends is lixed to depression and stress.
When you blush, the lining of your stomach turns red too.
You have enough iron in your body to make a 03 inch long nail.
Being tested on things, help you remember them better.
Those who don't socialize much, aren't really anti-social. They just have no tolerance for drama and fake people.
When a rule seems too strict, we tend to break more.
Alarm clock doesn't necessarily wake you up. They startle you, causing a panic that interrupts your sleep state which isn't healthy.

我们只需要两个可以信任的亲密朋友。朋友太多会导致抑郁和压力。
当你脸红时，你的胃粘膜也会变红。
人体内的铁元素足够用来制作一根3英寸长的钉子。
通过对事物的测试，可以帮助你更好地记住它们。
那些不怎么社交的人并不是真的反社会。他们只是不能容忍闹剧和虚伪的人。
当一个规则看起来太严格时，我们往往会违反更多。
闹钟不一定会叫醒你。它们会吓到你，引起恐慌，扰乱你的睡眠状态，这是不健康的。

Zaigham Qadeer, BS Biochemistry, PMAS Arid Agriculture University Rawalpindi
Hmm, let me tell you some cool facts about human evolution.
White skin is younger than agriculture revolution
The white color of european human skin is less than 10,000 years old. Today we know that 8500 years ago, most of humans in europe still had black skin. They lacked versions of two genes—SLC24A5 and SLC45A2—that lead to depigmentation and, therefore, pale skin in Europeans today. So, we can say that white skin is younger than agriculture revolution.
Blue eyes are older than white skin
Yes, you read that right, the blue eyes in humans are older than white skin color. Researchers extracted hunter gatherer dubbed La Brana 1 DNA, unearthed from the north-west of Spain. They came to know that, this person had black skin yet blue eyes.
Lactose tolerance is of same age as of white skin
White skin evolved round about 8–10 thousand years ago and at the same time humans evolved lactose tolerance. At this period of time a great famine hit turkey and neighboring area which let thousands to die, the rest tried to stay alive for years while drinking milk. Normally human adults lose lactose tolerance but due to this sextion pressure they turned their genes back on. Still more than 60% of human population is lactose intolerant.
Humans didn't domesticated cats
According to the prehistoric DNA of wild and domesticated cats we came to know that there is no much difference in between them. This gives us hint that we did not domesticated cats rather they domesticated themselves .
We are losing wisdom teeth
Toady more than 22% of population do not have wisdom teeth. Why? Because they didn't had any function in our body so sextion process had threw them away. We have been reducing our denatl size since astralopiths and it's been ~2 million years since we have been doing this.
Still there are millions of interesting facts about humans but i am afraid that i cannot write so much content so, please enjoy reading this. Thank you for reading.

欧洲人皮肤呈白色的历史还不到一万年。今天我们知道，8500年前，欧洲的大多数人仍然是黑色皮肤。他们缺乏SLC24A5和SLC45A2这两种基因，这两种基因会导致褪色，从而导致今天欧洲人的苍白皮肤。我们可以说，白皮肤比农业革命还年轻。
蓝眼睛比白皮肤历史久远
是的，你没看错，人类蓝色的眼睛比白色的皮肤更古老。研究人员提取了在西班牙西北部出土的La Brana 1的狩猎采集者DNA。他们逐渐了解到，这个人有着黑色的皮肤和蓝色的眼睛。
乳糖耐受性与白皮肤同时期出现的
白皮肤大约在8 - 1万年前进化而来，同时人类也进化出了乳糖耐受性。在这个时期，一场大饥荒袭击了土耳其和邻近地区，导致数千人死亡，其余的人在喝牛奶的情况下努力活了几年。正常情况下，成年人会失去对乳糖的耐受性，但由于这种选择压力，他们又重新启动了自己的基因。仍然有超过60%的人是乳糖不耐受症。
人类没有驯养猫
根据野猫和家养猫的史前DNA，我们知道它们之间没有太大的区别。这给了我们一个暗示，不是我们驯化了猫，而是它们自己驯化了自己。
我们正在失去智齿
如今，超过22%的人口没有智齿。为什么? 因为它们在我们的身体里没有任何功能，所以选择过程把它们抛弃了。从南方古猿开始，我们就一直在缩小牙齿的尺寸，从我们开始缩小牙齿尺寸到现在已经有200万年了。
还有很多关于人类的有趣的事实，但是我担心我不能写这么多的内容，所以请欣赏。感谢阅读。

Ahmed A.Bakr, Dental student
Eye:
Your eye is the fastest muscle in your body – hence why when something happens quickly, we say ‘in the blx of an eye!’
You see with your brain, not your eyes. Our eyes function as a camera, capturing light and sending data back to the brain.
Heterochromia refers to a condition where your eyes are two different colours.
The cornea is the only tissue in the human body which doesn’t contain blood vessels
When working at a computer, you should follow the 20-20-20 rule – look at something twenty feet away from your computer every twenty minutes for twenty seconds.
Human lips have a reddish color because of the great concentration of tiny capillaries just below the skin.
Right-handed people live, on average, nine years longer than left-handed people do. This is largely due to the fact that a majority of the machines and tools we use on a daily basis are designed for those who are right handed, making them somewhat dangerous for lefties to use and resulting in thousands of accidents and deaths each year.
Your ears secrete more earwax when you are afraid than when you aren’t.
A human’s ears and nose never stop growing.
The largest cell in the human body is an egg (or ovum) and is barely visible to the naked eye.
The smallest cell in the human body is a sperm.
Taste buds are not visible to the naked eye; the little bumps that can be seen on the tongue are actually papillae, on top of which rest the taste buds.
Rhinotillexomania is the excessive habit of picking one's nose.
Omphalophobia is the fear of the navel
Coprastasophobia" is the fear of constipation.
The space between the eyebrows is called the "glabella," which is derived from the Latin word glabellus, meaning smooth.

眼睛:
你的眼睛是身体中速度最快的肌肉，因此为什么当事情发生得很快时，我们会说“眨眼间！”
你用大脑看，而不是眼睛。我们的眼睛就像一台摄像机，捕捉光线并将数据传回大脑。
异色症是指你的眼睛有两种不同的颜色。
角膜是人体中唯一不含血管的组织。
当你在电脑前工作时，你应该遵循20-20-20规则——每隔20分钟，盯着距离你电脑20英尺的东西看20秒。
人的嘴唇是红色的，这是因为皮肤下面有大量的毛细血管。
惯用右手的人平均比惯用左手的人多活 9 年。这主要是因为我们每天使用的大多数机器和工具都是为惯用右手的人设计的，这使得左撇子使用起来有些危险，每年都会导致数千起事故和死亡。
当你害怕的时候，你的耳朵会分泌更多的耳垢。
人类的耳朵和鼻子从未停止生长。
人体最大的细胞是卵子，肉眼几乎看不见。
人体中最小的细胞是精子。
味蕾是肉眼看不到的; 舌头上可以看到的小疙瘩实际上是乳头状突起，上面是味蕾。
Rhinotillexomania是过度挖鼻子的习惯。
Omphalophobia是对肚脐的恐惧
Coprastasophobia是对便秘的恐惧。
眉毛之间的空间叫做“眉间”，这个词来源于拉丁语“glabellus”，意思是光滑的。

Hina Anser, Entrepreneur (2017-present)
Fingernails grow faster on the hand a person writes with. They also grow faster than toenails, and faster on longer fingers.
A human’s little finger contributes over 50% of the hand’s strength.
A human skeleton renews itself completely every 10 years.
For an adult human, taking just one step uses up to 200 muscles.
New research suggests that parents who stoke their children with harsh scolding may also be saddling them with anxieties that last a lifetime.
The brain contains 86 billion nerve cells joined by 100 trillion connections. This is more than the number of stars in a milky way.
The body can detect taste in .0015 seconds, which is faster than the blx of an eye.
Thanks for Reading!!

指甲在写字的手上长得更快。它们也比脚趾甲长得快，在长手指上长得更快。
人类的小指贡献了超过50%的手部力量。
人类骨骼每10年就会完全更新一次。
对于一个成年人来说，仅仅走一步就需要使用多达200块肌肉。
新的研究表明，用严厉的责骂来抚育孩子的父母，可能也会让孩子承受持续一生的焦虑。
大脑包含860亿个神经细胞，由100万亿个连接连接在一起。这比银河系中恒星的数量还要多。
人体可以在0.0015秒内感知到味道，比眨眼还要快。
感谢阅读!

Pranathi, lives in Hyderabad, Telangana, India
People with higher number of moles tend to live longer than people with lesser number of moles.
Thinking about your muscles can make you stronger.
Grapefruit scent will make middle aged women appear six years younger to men. The perception is not reciprocal and the grapefruit scent on men has no effect on women’s perception.
The world’s youngest parents were 8 and 9 and lived in China in 1910.
There are more people alive today than have ever died.
Women’s hair is about half the diameter of men’s hair
Women blx twice as many times as men do.
Intelligent people have more zinc and copper in their hair.
The lifespan of a human hair is 3 to 7 years on average.
Humans are the only animals to produce emotional tears.
It is not possible to tickle yourself. Even the most ticklish among us do not have the ability to tickle ourselves.
Your eyes are always the same size from birth but your nose and ears never stop growing.
After eating too much, your hearing is less sharp.
The surface area of a human lung is equal to a tennis court.
The human body contains enough fat to make seven bars of soap.
There are more than 100,000 miles of blood vessels in your body.
Hearts can beat outside of their bodies.

痣多的人往往比痣少的人寿命更长。
想想你的肌肉能让你更强壮。
柚子香味会让中年女性看起来比男性年轻六岁。感知不是互惠的，男性身上的葡萄柚香味对女性的感知没有影响。
世界上最年轻的父母分别是8岁和9岁，1910年居住在中国。
今天活着的人比死去的人要多。
女性的头发直径大约是男性头发直径的一半。
女性眨眼的次数是男性的两倍。
聪明的人头发中的锌和铜含量更高。
人类头发的平均寿命是3到7年。
人类是唯一会流泪的动物。
你不可能给自己挠痒痒。即使是我们当中最怕痒的人也没有能力给自己挠痒痒。
你的眼睛从出生起就一直是一样的大小，但你的鼻子和耳朵却从未停止生长。
吃得太多后，你的听力就不那么敏锐了。
人肺的表面积相当于一个网球场。
人体含有的脂肪足够制作7块肥皂。
你的体内有超过10万英里长的血管。
心脏可以在体外跳动。

Anthony M Anderson, studies Biology & Mathematics (2023)
More than half of the bones are located in the ankles, wrights, feet and hands of a human body
Humans are the only animals with chins
They tend to brush their teeth aggressive
Fingernails will not grow after you're dead
Thumbs have their own pulse
A human nose can detect 1 trillion smells
The skin is the largest organ in the human body.
One the genetic level, more than 99% of human are identical

超过一半的骨骼位于人体的脚踝、手腕、脚和手上
人类是唯一有下巴的动物
他们刷牙时有攻击性
指甲死后不会长
拇指有自己的脉搏
人类的鼻子能探测到1万亿种气味
皮肤是人体最大的器官
在基因层面，99%以上的人都是一样的
原创翻译：龙腾网 http://www.ltaaa.cn 转载请注明出处

Péter Tamas
Here are some interesting facts about us, humans.
By the time we turn 60, most of us have lost about half our taste buds.
Women blx twice as much as men.
We use 200 muscles to take one step.
Our tongue is our strongest muscle.
We cannot tickle ourselves.
Our brains are more active during nighttime than daytime.
Blond people have more hair.
Our sneeze travels at 100 miles per hour.
We, humans share 50% of our genes with bananas.
Our brain is 80% water.

以下是一些关于我们人类的有趣事实：
到我们60岁时，我们大多数人已经失去了大约一半的味蕾。
女人眨眼的次数是男人的两倍。
走一步就需要使用多达200块肌肉。
舌头是我们最强壮的肌肉。
我们没法挠自己。
我们的大脑在夜间比白天更活跃。
金发的人头发多。
我们的喷嚏以每小时100英里的速度传播。
我们人类与香蕉有50%的基因相同。
我们的大脑成分80%是水。