As many San Franciscans have noticed, sourdough bread stays fresher longer than the regular stuff. Sourdoughs extended freshness is due to extra fermentation that traps more moisture in the dough. But now we know that sourdoughs longevity is also bec

发表于:2018-12-24 / 阅读(56) / 评论(0) 分类 Scientific American(二)月

Early farming began in the Near East about 10500 years ago. Farming first reached Balkans in Europe some 8 to 9 thousand years ago and then crept westward. Locals in Britain seperated from mainland by the relatively newly formed English Channal did n

发表于:2018-12-24 / 阅读(60) / 评论(0) 分类 2015年Scientific American(二)月

Its a confusing world for babies. To make sense of it, they look for intellectual stimulation. But theyre only interested if what they look at is not too hard to comprehendor boringly easy. Researchers call it the Goldilocks effect, in a study in the

发表于:2018-12-24 / 阅读(41) / 评论(0) 分类 Scientific American(五)月

This is Scientific Americans 60 second Science, I am Christopher Intagliata, got a minute? You've probably seen clouds of insects swirling round a streetlamp at night. But something you may not have noticed is that streetlights attract bugs to the gr

发表于:2018-12-24 / 阅读(66) / 评论(0) 分类 Scientific American(五)月

Stockbrokers are some of the highest paid sales workers in the country. But they also have one of the largest gender pay gaps in sales jobsdata from the mid 90s show that women made 20 percent less than men. But stockbrokers are usually paid through

发表于:2018-12-24 / 阅读(56) / 评论(0) 分类 Scientific American(五)月

Does an ice-cold drink actually taste better than the same beverage at room temperature? Depends on what its taste is: a new study finds that the intensity of some flavors varies with temperature. The work is in the journal Chemosensory Perception. R

发表于:2019-01-08 / 阅读(62) / 评论(0) 分类 Scientific American(五)月

Have you ever wanted to turn down the volume at a deafening concert or noisy bar? Envy the whale: a new study finds that toothed whales can reduce their own auditory sensitivity when they expect a loud sound. The work is presented at this weeks Acous

发表于:2019-01-08 / 阅读(72) / 评论(0) 分类 Scientific American(五)月

If you enjoy sharing all your likes and dislikes on Facebook, youre definitely not alone: research finds that broadcasting personal opinions gives people the same sense of reward as earning money. The study is in the Proceedings of the National Acade

发表于:2019-01-08 / 阅读(63) / 评论(0) 分类 Scientific American(五)月

This is Scientific American 60 Second Science, I am Amy Kraft. Got a minute Jack Nicholson, playing the crazed caretaker in The Shining, makes me reach for a blanket. Now a study finds that people we find, well, creepy can actually make us feel colde

发表于:2019-01-08 / 阅读(60) / 评论(0) 分类 Scientific American(五)月

This is Scientific American 60 Second Science, I am Amy Kraft. Got a minute Jack Nicholson, playing the crazed caretaker in The Shining, makes me reach for a blanket. Now a study finds that people we find, well, creepy can actually make us feel colde

发表于:2019-01-08 / 阅读(72) / 评论(0) 分类 Scientific American(五)月

Jack Nicholson, playing the crazed caretaker in The Shining, makes me reach for a blanket. Now a study finds that people we find, well, creepy can actually make us feel colder. The research will be published in the journal Psychological Science. Rese

发表于:2019-01-08 / 阅读(74) / 评论(0) 分类 Scientific American(五)月

Heres a tale of genes, smells and pigs. Most people have two copies of a gene that enables them to detect a steroidal pheromone called androstenonewhich is found in male mammals, particularly porkers. But most pigs in developed countries have been ch

发表于:2019-01-08 / 阅读(82) / 评论(0) 分类 Scientific American(五)月

Most people have two copies of a gene that enables them to detect a steroidal pheromone called androstenonewhich is found in male mammals, particularly porkers. But most pigs in developed countries have been chemically castrated. Which means much les

发表于:2019-01-08 / 阅读(64) / 评论(0) 分类 Scientific American(五)月

A lethal dose cyanide of can take your life in minutes. It kills by blocking your cells used of oxygen, suffocating the body and brain. There are FDA approved antidote, but they are served via intravenous injection. Just imagine paramedics chucking u

发表于:2019-01-20 / 阅读(61) / 评论(0) 分类 Scientific American(二)月

That spoon sure looks yummy. Not that I am planning on eating my utensils, but the appearance and feel of cutlery influences the taste of food. That's according to a study in the journal Flavor. It was already known that plate size, background music

发表于:2019-01-20 / 阅读(62) / 评论(0) 分类 Scientific American(七)月

This is Scientific American 60-second Science. I'm Sophie Bushwick. Got a minute? Wolves and grizzlies sound like unlikely allies. But the resurgence of Yellowstone Park's canine population has helped the bears in a berry interesting way. In the 1990

发表于:2019-01-20 / 阅读(51) / 评论(0) 分类 Scientific American(八)月

This is scientific American 60 seconds science. I am, got a minute? Everywhere you go, the trillions of microbs is in you got go to. That is a compllicating sort, because according to a new study a more diverse population of testnal bacteria is links

发表于:2019-01-20 / 阅读(50) / 评论(0) 分类 Scientific American(九)月

If you need a new liver, doctors have about twelve hours to transport it from a donor. That ticking clock severely limits the ability of doctors to get organs to patients. Now researchers have demonstrated a method that kept rat livers viable up to f

发表于:2019-01-20 / 阅读(69) / 评论(0) 分类 2014年Scientific American(七)月

When you hear the word mutation, you may think of something destructive, or of Marvels X-Men. But some mutationswhich are just differences in DNAcan be historic. Take, for example, a genetic sequence found in the vast majority of people from Tibet. M

发表于:2019-01-20 / 阅读(67) / 评论(0) 分类 2014年Scientific American(九)月

This is scientific Americans sixty seconds science. I am Ie Welkinson. Got a minute? All rise. The twitter court public opinion is now in session and the next case on the dock will reach a quick verdict because public opinion solidifies rapidly on tw

发表于:2019-01-20 / 阅读(56) / 评论(0) 分类 2014年Scientific American(五)月