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A lot of people have a lot of different questions,
许多人都有大量不同的问题
and sometimes those questions line up so that a lot of people have the same question.
有时候那些问题会联系在一起 以至于 许多人会有同样的疑问
And people ask the internet for answers to these questions like "Why are tears salty?"
然后人们会在网上寻求答案 例如“为什么眼泪是咸的？”
or "How do I get rid of bedbugs?" or maybe just "How do I see more cat videos?"
或者“我怎么样摆脱床虱？”或者可能仅仅是 “我怎样能看到更多猫的视频？”
We're all about fostering curiosity here at SciShow -
我们会在SicShow来培养你们的好奇心
that's why we've worked with Google and YouTube to answer 10 of the most googled questions on the internet.
这也就是为什么我们会和Google(谷歌) Youtube合作 回答10个最受关注的问题
This is The World's Most Asked Questions.
本集是《在世界上 这些问题提出最多》
Today's question: "How do I grow a beard?"
今日的问题:"怎样才能长胡须？"
Well I can't really help you sprout a stylish Van Dyke or a bushy Shenandoah or a Lincoln-esque chin curtain,
当然我不可能真的帮到你长出像Van Dyke（范戴客）那样时尚或者是像浓密的仙度纳（国家公园）或者是林肯式的下巴幕帘
but I can explain the science of facial hair; all you need to have for a big, bristly beard are two things.
但我能解释面部毛发的科学原理 浓密的胡子是由两个因素决定的
First: testosterone. Both males and females produce the sex hormone testosterone,
首先:睾丸素 男性和女性都会生产荷尔蒙睾丸激素
but the highest levels typically occur in males who have reached sexual maturity.
但通常的最高水平是出现在男性中的 也就是说他们就已经达到性成熟的水平了
Testosterone is responsible for all of the secondary sex characteristics you generally find in men,
睾丸素对在普遍的男性中都可以找到的第二性特征起到促进作用
like more muscle mass, more body hair, and an enlarged larynx resulting in a deeper voice.
像身体上多处肌肉块 多处体毛的增长外 同时喉部发育会致使更低嗓音的出现
It also triggers the growth of facial hair.
这也同时引起了面部毛发增长
But the whiskers don't just show up out of nowhere;
但胡须并不是到处都是
testosterone actually interacts with the little wispy peach-fuzzy hairs that everybody already has,
睾丸素与每个人都有的小细桃红色毛发相互作用
pigmenting them to make them darker and stimulating them to grow thicker.
使得毛发颜色变深并渐渐变粗
But make no mistake, the bushiness of a man's beard is not a measure of how much testosterone he's producing.
但不要弄错 人的胡须 的数量是不能估测他能生产多少的睾丸素
Lots of research comparing men across various ethnic groups found that
很多对比不同种族男性的研究发现
guys who produce less facial hair have the same hormone levels as those who look like Duck Dynasty stand-ins.
面部毛发较少的人和那些看上去像鸭子王朝替身的人们有着相同的激素水平。
So what else do you need? The right genes.
那你又需要什么？正确的基因
'Cause it takes two players to make a whisker after all.
原因是配偶之间的交配得到的基因毕竟会影响胡须的生长
The testosterone and the follicle, or sac in the skin where the little fuzzy hair grows into a thick bristle.
睾丸素和卵泡 或是使小绒毛长成毛发的皮肤上的囊泡
But the thing is, not all follicles respond to testosterone's chemical signal in the same way.
但事实是 并不是所有的卵泡都以同样的方式回应睾丸素发出化学信号
Genetic variations can change your follicles' sensitivity to hormones;
遗传变异可能会改变你的卵泡对荷尔蒙的敏感性
as a result some guys' hairs have a hard time reading and responding to the signal,
结果 有些人们的毛发在读取和回应信号时都很困难
resulting in your kinda patchy Bob Dylan scraggle.
结果会像 Bob Dylan scraggle毛发发展不协调
While others are really sensitive to the hormone, giving you your Sacha Baron Cohen types.
而其他人对荷尔蒙反应敏感 就会产生像 Sacha Baron Cohen这样的例子
So just as the hair on your head is a certain color and texture depending on your genes,
所以这就像你头发的颜色和质地取决于你的基因一样
so is your beard, or lack thereof.
胡须也一样
Finally, a tip that might save you some trouble: shaving really does not make your beard grow faster!
最后 有个小窍门也许能够挽救你这些困难:那就是刮胡须 它真的不能让你的胡须长得更快
We're not sure how that myth got started,
我们不确保这段神奇般的旅程是怎么开始的
but it probably has to do with the fact that hairs are long and tapered, coming to a narrow point at the end.
但是这很可能与 毛发既长又尖细直到发尾变成一个小点 的事实有关
When you shave off the skinny top of the hair, you leave the thicker lower part exposed, making it look a little bigger.
当你剃掉毛发的尖端 留下比较粗的毛发根部 这样所以看起来就更浓密一些.
But your whiskers won't grow in any more full or lush because you shaved them.
但是你的胡须不会因为你剃掉它们就变得更多或更密
Like it or not, you're stuck with whatever your face can produce;
不管喜欢与否 你的脸能长出什么样的胡须你就得接受什么样的胡须
for me it's mostly just...right here...ughh.
对我来说一般情况下 是…真的啦…嗯 可以这么说
Unscientific survey analysis time:
不科学调查分析时间:
SciShow Space watchers, according to the survey, were way more likely to have beards than people who don't watch SciShow Space.
根据调查 SciShow观察者 可能会比不看SicShow的人们长出更多胡须
Now that seems really weird until you realize that SciShow Space viewers also are much more likely to have Y chromosomes,
那似乎太奇怪了 直到你意识到SicShow观众他们更可能拥有 Y染色体
and thus a lot more testosterone, which is why statisticians are important.
因此就会有更多睾丸素 这也就为什么说统计员的职位是很重要的
Of all the fascinating questions in the world, what question do you want answered most?
对于世界上所有的吸引人的问题 有什么问题是你最想回答的呢？
Let us know on Facebook or Twitter or in the comments down below,
让我们知道Facebook或者Twitter下方的评论
and we will answer the best questions in a new video at the end of the month.
我们会 在这个月末的最新一期视频 回答你们最想提问的问题
And don't forget to use the hashtag #WMAQ for World's Most Asked Questions and stay tuned to SciShow for more answers.
你们不要忘了在#WMAQ标注你们的疑惑 世界的大多数被提问的问题都可以在SciShow找到更多的答复
