This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? Over the years regulations have developed to limit the hours of hospital interns and residents, because someone putting in a 100-hour workweek might not be at their best w

发表于:2018-12-02 / 阅读(109) / 评论(0) 分类 Scientific American(十二)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Sticks and stones may break some bonesunless you're a young female chimp. In that case, you're more likely to cradle your stick like a dollie. That findi

发表于:2018-12-02 / 阅读(114) / 评论(0) 分类 Scientific American(十二)月

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? A new development in malaria: Plasmodium vivax, the worlds most common malaria parasite, now infects people previously considered to be resistant. Peter Zimmerman from Cas

发表于:2018-12-24 / 阅读(66) / 评论(0) 分类 Scientific American(二)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? There have been tremendous declines in fertility. The key has been the prevention of unwanted births, really around the globe. John Casterline directs the Initiative in

发表于:2018-12-24 / 阅读(65) / 评论(0) 分类 Scientific American(二)月

Vaccines are desperately needed in the developing world. Even when theyre available and inexpensive, theres still a major problem: most vaccines need to be refrigerated. Reaching the relevant populations often means traveling to areas where electrici

发表于:2019-01-08 / 阅读(94) / 评论(0) 分类 Scientific American(七)月

The eyes are the windows to the soul. As such they can reveal if someone is lying, right? Cop shows, advice shows, even some organizational training courses hold that if somebody looks up and to the right, theyre probably lying. Up and to the left me

发表于:2019-01-08 / 阅读(102) / 评论(0) 分类 Scientific American(七)月

This is scientific American-60 second science,Im Cynthia Graber.This will just take a minute.You talk to a friend and then you talk to a theory on the iphone.I found forty resting rents.Dose your brain function differently when interacting with machi

发表于:2019-01-08 / 阅读(107) / 评论(0) 分类 Scientific American(七)月

The same mathematical models used to study the hunting range of lions have many other applicationsthey describe the flight patterns of honeybees. And now researchers say these math models can help explain the stability of gang territories and pattern

发表于:2019-01-08 / 阅读(103) / 评论(0) 分类 Scientific American(七)月

Spring is in the air. And so are those dang insects, hungry for a blood meal. The victim can wind up with a bunch of bites, red and itchy. So what drugs can quench that itch? Maybe none, according to a study in the Drug and Therapeutics Bulletin. Res

发表于:2019-01-08 / 阅读(91) / 评论(0) 分类 Scientific American(四)月

Global warming might seem like a mechanic boom after all milder temperatures in more carbon dioxide and nitrogen should feed flower. But ten years study has found that any initial positive effect on plants from climate change may soon disappear. The

发表于:2019-01-08 / 阅读(66) / 评论(0) 分类 Scientific American(四)月

This is Scientific American 60 second Science, I am Christopher Intagliata, got t minute. City dwellers compete with the din of traffic to be heard. And its not just urban humans. Sparrows living in San Francisco's Presidio district actually tweet th

发表于:2019-01-08 / 阅读(90) / 评论(0) 分类 Scientific American(四)月

This is Scientific American 60 Second Science, I am Sophie Bushwick, got a minute? Is the attempt to make environmentally friendly roadways doomed to wind up in the toilet? Actually, it may be the other way around. To earn a green certification, the

发表于:2019-01-08 / 阅读(86) / 评论(0) 分类 Scientific American(三)月

This is Scientific American 60 Second Science, I'm Cynthia Graber, this will just take a minute~ You know the sceneits a Friday night, and your date just canceled. Youre bummed, maybe a little hurt. You think now might be a good time for a beer, mayb

发表于:2019-01-08 / 阅读(87) / 评论(0) 分类 Scientific American(三)月

This is Scientific American 60 Second Science, I am Sophie Bushwick, got a minute? Typing can be tough for your handsbut can it also mess with your head? Researchers have discovered that words typed on the right side of a QWERTY keyboard, for example

发表于:2019-01-08 / 阅读(88) / 评论(0) 分类 Scientific American(三)月

This is Scientific Americans' Sixty-Second Science, I'm Christopher Intagliata, got a minute? Vampire spiders, as the name suggests, like blood. And they feast on blood-filled mosquitoes to get it. But only female mosquitoes suck blood. So how do spi

发表于:2019-01-08 / 阅读(89) / 评论(0) 分类 Scientific American(六)月

This is Scientific American 60 science, I am Charles Q. Choi! Psoriasis is an autoimmune diseasethe immune system mistakenly attacks its own body, causing red, itchy, scaly patches on the skin. But there may be a hidden upside. People with psoriasis

发表于:2019-01-08 / 阅读(81) / 评论(0) 分类 Scientific American(三)月

This is Scientific American's 60-Second Science. American is still far short of the recommend daily portions of food and vegetables, and kids are no ...veggies at school cafateria. So researches tested whether visual cuse at hopeful foods could incre

发表于:2019-01-08 / 阅读(79) / 评论(0) 分类 Scientific American(二)月

This Scientific Americans 60 senconds science. I'm Cythia Graber. This will just take a minute. How did the zebra get stripes. One theory holds that stripes help confused predators. But stripes might be primarilly to protect zebras from ferocious ins

发表于:2019-01-08 / 阅读(108) / 评论(0) 分类 Scientific American(二)月

This is Scientific American's 60-Second Science. I'm Sophine Bushwick. Got a minute? Crickets make a big contribution to the sounds of a summer night. And theyve been doing so for some 165 million years. Now paleontologists have reconstructed the son

发表于:2019-01-08 / 阅读(88) / 评论(0) 分类 Scientific American(二)月

This is Scientific American 60 second science, I am Christopher Intagliata, got a minute The sounds many animals make are determined by their genesthey don't have to learn them. Humans, on the other hand, have all sorts of languages and accents, stuf

发表于:2019-01-08 / 阅读(80) / 评论(0) 分类 Scientific American(二)月