科学美国人60秒 SSS 鞋带易结也易解

Shoelace Study Untangles a Knotty Problem 鞋带易结也易解 Youre strolling down the street or maybe hauling that load of laundry down a flight of stairs when all of a sudden. [sound fx] Your laces come undone. If youve ever pondered what precipi

科学美国人60秒 SSS 舌头之谜

You might think frogs catch insects cause their tongues are sticky. But why is the tongue sticky, and how does it actually adhere to these insects at these very high accelerations? 也许你认为青蛙能捕食昆虫是由于舌头很粘的缘故。但

科学美国人60秒 SSS 一条小鱼

Hundreds of millions of years ago a humble fish swam in the lakes and rivers of the supercontinent Gondwana. Eventually Gondwana broke apart, becoming the continents we know today. And the descendants of that fish, now called cichlids, continue to sw

科学美国人60秒 SSS 眼睛也要休息

So were inside, were in fake lighting, were not spending as much time outside in the context in which our visual system evolved. 在室内，处在人造光中，由于我们的视觉系统在发育，所以我们不能在光下呆太长的时间。

科学美国人60秒 SSS “美食”共分享

Microbes play a huge role in our nutrition, our immunity, maybe even our mental health. But we arent the only ones that rely on these armies of resident bacteria. Baby cockroaches, the ones that just emerge from the egg, don't have any gut bacteria.

科学美国人60秒 SSS 沐浴雨中 随风飘荡

Back in January, one of California's oldest and most iconic residents keeled over: the Pioneer Cabin tree, a giant sequoia in Calaveras Big Trees State Parkso big you used to be able to drive through it. 在今年一月份，加州一座最古老、最

科学美国人60秒 SSS 肠道细菌：我们饱啦

This Thanksgiving, as you savor your turkey and stuffing, here's something else to give thanks for: the army of microbes that help you digest the feast. Because when you eat, you're feeding them tooand triggering an enormous bloom of gut bacteria. In

科学美国人60秒 SSS 意外带来的不止是惊醒

Exposure to the unusual, the jarring, the culturally shocking may be beneficial for your cognitive reasoningand your waistline. 接触与众不同、不和谐文化方面的冲击可能会有益于认知推理甚至你的腰围。 Thats according to

科学美国人60秒 SSS Biggest Rivers Are Overhead

Back in January, one of California's oldest and most iconic residents keeled over: the Pioneer Cabin tree, a giant sequoia in Calaveras Big Trees State Parkso big you used to be able to drive through it. The giant was blown over by high windsdelivere

科学美国人60秒 SSS How to Find Loooong Gravitational Waves

In 2016 the Laser Interferometer Gravitational-Wave Observatory, LIGO, made the first accepted detection of gravitational waves. So any time you move a mass it produces a gravitational waveso black holes, like the ones LIGO detected, these are stella

科学美国人60秒 SSS Forensic Science: Trials with Errors

We have increasing doubts about this evidence, but we dont feel yet that we have the scientific knowledge and basis to exclude it altogether. Jed Rakoff, United States District Judge for the Southern District of New York. He spoke about forensic evid

科学美国人60秒 SSS 金屋藏“娇”

How do you attract a mate? If youre a male mouse, you take the Frank Sinatra approachyou sing. Scientists have known about crooning male mice for years. And past experiments showed that if you leave male mice alone with an unconscious female or even

科学美国人60秒 SSS 美国疾控中心对于枪支一直保持沉默

CDC is afraid to fund firearms research. 疾控中心是害怕得到武器研究的经费资助。 David Hemenway, professor of health policy at the Harvard T.H. Chan School of Public Health. 大卫海明威是美国哈佛大学公共卫生学院卫生

科学美国人60秒 SSS 嗅觉——鲨鱼导航秘诀

Sharks Head Straight Home by Smell嗅觉鲨鱼导航秘诀 Some sea creatures can find their way through thousands of miles of seemingly featureless oceans. Even more impressive is the route that they take. 一些海洋生物能够在茫茫的大海中

科学美国人60秒 SSS “盖子”的神奇之处

LSD is one of the most potent hallucinogenic drugsactive at just around 100 microgramsa miniscule amount. That fact has fascinated pharmacologists for decades. Namely, how can it have such long-lasting effects12 hours or moreat such tiny doses? 麦角酸

科学美国人60秒 SSS 墨西哥湾“死区”对虾业的影响

Every spring, the Mississippi River dumps tens of thousands of tons of nutrient runoff into the Gulf of Mexico. Add temperature, current and wind to that pollution, and you have the Western Hemisphere's largest stretch of oxygen-poor watersa so-calle

科学美国人60秒 SSS 未来声带研发方向

Voice is generated by a complex and beautiful biological system, and this is a system that allows all of us to communicate messages, concepts, and emotions. 声音是由负责、美丽的器官系统产生的，该系统可以让我们交流信息、想

科学美国人60秒 SSS 吃零食须等价训练

Super Bowl Sunday is almost here and theres one question on everyones mind: How can I tackle a plate of chicken wings without adding yardage to my end zone? 超级碗星期天马上就要来临了，每一个人的心头都有这样一个问题：我怎

科学美国人60秒 SSS 香甜可口的咖啡

What's the liveliest part of your kitchen, in terms of harboring bacteria? Is it the cutting board? The dish sponge? Or maybe your coffeemaker? Because even though caffeine has antibacterial effects, it turns out espresso machines can harbor a whole

科学美国人60秒 SSS 降温层

You've probably seen pictures of Greek villages, where every house is painted bright white. The paint reflects the intense sunlight of the Mediterranean. And it works pretty well to keep the houses from heating up in the sun. But it doesn't actively