You might blame your pets for shedding all over the house, but we humans do it, too, and our staff is alive. We are constantly meeting microbes around us, and this is coming from shedding our skin, from exhaling, and our hair, and we are just full of

发表于:2018-12-24 / 阅读(28) / 评论(0) 分类 2015年Scientific American(九)月

You might say blue-green algae are optimists: they put things in the best possible lightliterally. Actually, the organisms arent really algae. Theyre photosynthetic ocean bacteria. And they can fine-tune their photosynthetic apparatus to take advanta

发表于:2018-12-24 / 阅读(37) / 评论(0) 分类 Scientific American(十一)月

No matter how seldom you've opened that calculus textbook on your shelf, the chances of worms having eaten it are pretty low. But books written back in the Renaissance have had much better odds of becoming worm food. Now we know that the holes left b

发表于:2018-12-24 / 阅读(31) / 评论(0) 分类 Scientific American(十一)月

No matter how seldom you've opened that calculus textbook on your shelf, the chances of worms having eaten it are pretty low. But books written back in the Renaissance have had much better odds of becoming worm food. Now we know that the holes left b

发表于:2018-12-24 / 阅读(36) / 评论(0) 分类 Scientific American(十一)月

No matter how seldom you've opened that calculus textbook on your shelf, the chances of worms having eaten it are pretty low. But books written back in the Renaissance have had much better odds of becoming worm food. Now we know that the holes left b

发表于:2018-12-24 / 阅读(33) / 评论(0) 分类 Scientific American(十一)月

This is scientific American sixty seconds science. I'm Christopher Intagliata. Got a minute? When Pyrex cookware first came out, it was advertised as icebox to oven. Because it was made of borosilicate glass which could weather large temperature chan

发表于:2018-12-24 / 阅读(29) / 评论(0) 分类 Scientific American(九)月

A male songbird's tune advertises his status and availability to choosy female. But rock sparrows offer a notable exception. Their crooning can also reveal when the male has been jilted. Researchers studied the songs of male rock sparrows in the Fren

发表于:2018-12-24 / 阅读(26) / 评论(0) 分类 Scientific American(九)月

They say that all's fair in love and war. But when it comes to making a deal, people have very definite ideas about what's fair. A recent study found that people will let a basic physiological need go unfulfilled rather than accept an unfair transact

发表于:2018-12-24 / 阅读(21) / 评论(0) 分类 Scientific American(九)月

How do you to find 1 kilogram? Easy. It's the exact mass of medal cylinder called the international prototype kilogram. IPK, for short. Kept in controlled conditions in France. But the standard kilogram has gained weight since its creation in 1875. T

发表于:2018-12-24 / 阅读(30) / 评论(0) 分类 Scientific American(一)月

What does an 800-pound gorilla eat? If you said: anything it wants, youre not thinking like a scientist. A scientist would say, Let me analyze the isotopic composition of its excreta and Ill get back to you. Because a new study shows that the ratio o

发表于:2019-01-08 / 阅读(42) / 评论(0) 分类 Scientific American(十二)月

You vote for politicians based on their views, right? Thats how it works in theory, but other facts can sway your votes like politicians voice. Because a study showed that the deeper the voice, the more electable the candidate. And not just for men,

发表于:2019-01-08 / 阅读(42) / 评论(0) 分类 Scientific American(十二)月

Cigarettes are bad for your health. But thats only if you smoke em. If you use them to line your nest, they might actually do you some good. Because birds that decorate their digs with discarded cigarette butts are less bothered by parasites. Thats a

发表于:2019-01-08 / 阅读(43) / 评论(0) 分类 Scientific American(十二)月

In the last decade scientists have managed to sequence the genomes of everything from bacteria and fruit flies to individual human beings. But often overlooked are the genomic sequences of our food. We know the genomes of apples, bananas, potatoes, w

发表于:2019-01-08 / 阅读(46) / 评论(0) 分类 Scientific American(十二)月

Rising season severe storm is the most talked about threats of climate change. But here is another. No more coffee. Because rising temperatures make cripple wild populations of Arabica coffee, and most cultivated species in the world. So says a study

发表于:2019-01-08 / 阅读(45) / 评论(0) 分类 Scientific American(十一)月

Nobel weeka fine time to celebrate sciences most notable achievements. As you raise your glass to this years laureates, why not toast one of chemistrys most delectable discoveries. Because its the 100th anniversary of the Maillard reaction, without w

发表于:2019-01-08 / 阅读(48) / 评论(0) 分类 Scientific American(十)月

Sauropods like Brachiosaurus and Diplodocus were the biggest beasts to ever roam the Earth. And these dinosaurs had enormously long necks. Which poses an anatomical problem: they needed to move their necks side to side and up and down to graze, but t

发表于:2019-01-08 / 阅读(42) / 评论(0) 分类 Scientific American(十)月

This is Scientific American 60-second science. Im ... Graber. This will just take a minute. The drought is big news in California, but California is not alone. Climate change will exacerbate water issues. So what should we do to save water? Turns out

发表于:2019-01-20 / 阅读(38) / 评论(0) 分类 2014年Scientific American(三)月

This is Scientific American -Sixty Seconds Science. I'm Sophie Bushiwick. Got a minute? During a physical exam, doctors pick up a lot from their patients, including that patient's bacteria. To keep infections from spreading, physicians try to always

发表于:2019-01-20 / 阅读(42) / 评论(0) 分类 2014年Scientific American(三)月

Im never drinking again, and this time i mean it. Anyone who suffered through bad hangovers have muttered these words. But just a hangover even delay your next drink?Scientists recruited almost 400 adults who consumed alcohol at least once a week.At

发表于:2019-01-20 / 阅读(40) / 评论(0) 分类 2014年Scientific American(三)月

Too little salt makes for(导致) a bland(温和的;乏味的) meal. But too much is offensively briny(海水的;咸的). Now, scientists have discovered why too much tastes bad. The work is in journal Nature. As the previous podcast noted, the c

发表于:2019-01-20 / 阅读(45) / 评论(0) 分类 Scientific American(二)月