This is Scientific Americans 60 second Science, I am Cynthia Craber, this will just take a minute. The biggest risk for breast cancer patients is usually not original tumor, which is removed by surgery. The cancer becomes particularly deadly if it me

发表于:2019-01-08 / 阅读(49) / 评论(0) 分类 Scientific American(六)月

This is Scientific Americans 60 second science, I am John Matson. Were just hours away from the last transit of Venus until the year 2117. A transit is when a planet passes in front of the sun, revealing itself as a tiny black dot on the suns face. T

发表于:2019-01-08 / 阅读(52) / 评论(0) 分类 Scientific American(六)月

This is Scientific American's 60 seconds science. I'm Kellen Horgon. This will just take a minute. Have you ever wondered what happens to mosquitos in the rain, a raindrop is like 15 times heavier than those little suckers. So getting hit by one, he'

发表于:2019-01-08 / 阅读(56) / 评论(0) 分类 Scientific American(六)月

Some dinosaurs were really huge, and now we may have a better way to estimate just how heavy these giants were. Researchers have developed a method to weigh dinosaurs based on laser scans of their skeletons. The study is in the journal Biology Letter

发表于:2019-01-08 / 阅读(80) / 评论(0) 分类 Scientific American(六)月

Sometimes women and men break a nail working on a tough task. Because our keratin claws are no match for the club-like appendages of a critter called the peacock mantis shrimp. They can hammer through crab exoskeletons and even mollusk shells to find

发表于:2019-01-08 / 阅读(61) / 评论(0) 分类 Scientific American(六)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

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City kids have smorgasbord of food choices. But they also face food allergies more than do their country cousins. Researchers mapped food allergies in children across the U.S. And they found more cases per capita in areas with high population densiti

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In the day of the dinosaur, insects had wingspans of nearly 2.5 feet. So why are today's bugs so puny? According to researchers at U.C. Santa Cruz, we may have birds and bats to thank. Their concludes appear in the Proceedings of the National Academy

发表于:2019-01-08 / 阅读(52) / 评论(0) 分类 Scientific American(六)月

After a hurricane or earthquake, people often band together and cooperate to deal with the recovery. And were not the only species that becomes more cooperative in tough times.Female Yuhina birds in Taiwan usually fight over space in the community ne

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Plants that use animals to disperse their seeds can find themselves in a pickle: They need to make fruit tasty enough to entice the local fauna, but they also need to make sure that their animal asssistants don't digest the very seeds that are meant

发表于:2019-01-08 / 阅读(54) / 评论(0) 分类 Scientific American(六)月

Deer tick and Lime disease go hand in hand in some places but you can't always put blame on Bambi. Because new research shows the incidence of Lime disease tracks less with the abundance of deer than those with disappearance of foxes. The study is in

发表于:2019-01-08 / 阅读(48) / 评论(0) 分类 Scientific American(六)月

Plants that use animals to disperse their seeds can find themselves in a pickle. Their need to make fruit tasty enough to entice the local fauna, but they also need to make sure that their animal assistants don't digest the very seeds they are meant

发表于:2019-01-08 / 阅读(46) / 评论(0) 分类 Scientific American(六)月

Dogs aren't just man's best friend. Previous studies have shown that kids with dogs are less likely to develop asthma. Now new studies may show how. For those (from) mice it applied was. The work was presented at the meeting of the American Society f

发表于:2019-01-08 / 阅读(65) / 评论(0) 分类 Scientific American(六)月

This is Scientific American 60 Seconds. I'm Cynthia Graber. This'll just take a minute. In Europe and the near east, people went from being mobile hunter gathers to more settled agriculture way of life. But in Africa, no matters domesticated animals

发表于:2018-12-24 / 阅读(53) / 评论(0) 分类 Scientific American(六)月

This is Scientific American, 60-second science. I'm Evelyn Lamb. Got a minute? That is Generation Zero of DarwinTunes. It is a website researchers are using to study how listener preferences affect the evolution of music. A new study claims that the

发表于:2018-12-24 / 阅读(40) / 评论(0) 分类 Scientific American(六)月

To make a big impression, youve got to grin and bare ityour array of teeth, that is. Because people gazing at a crowd find it easier to spot someone with a toothy facial expression, whether its a happy smile or an angry snarl, than someone with a tig

发表于:2018-12-24 / 阅读(43) / 评论(0) 分类 Scientific American(六)月

Remember those educational cassettes that youd supposedly learn from overnight? Well, scientific evidence says they're bunkunless you listen to them while youre up during the night, that is. But if youre actually sleeping and you play something that

发表于:2018-12-24 / 阅读(35) / 评论(0) 分类 Scientific American(六)月

A planet sees what we see, a planet sees light. Danel ** director of NANA center for planet boi-sciences at tele university, and the author of a new book, what a planet knows?. so he takes someone who is completely blind and by observe in some way gi

发表于:2018-12-24 / 阅读(37) / 评论(0) 分类 Scientific American(六)月

Every time you inhale, oxygen passes from your windpipe to your lungs and on into your bloodstream. But what if your windpipe was blocked? Getting the gas straight to your blood could save your life. Wait, put down that syringea large air bubble in a

发表于:2018-12-24 / 阅读(31) / 评论(0) 分类 Scientific American(六)月

For many people summer equals tomatoes. Thats when folks can get their hands on gorgeous heirloom and traditional varieties, full of tomatoey flavor. Such tomatoes provide a stark contrast to year-round supermarket ones, famous for tasting like, well

发表于:2018-12-24 / 阅读(41) / 评论(0) 分类 Scientific American(六)月