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发表于:2018-12-24 / 阅读(61) / 评论(0) 分类 2015年Scientific American(二)月

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Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you! 科学美国人60秒

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Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you! 科学美国人60秒

发表于:2018-12-24 / 阅读(58) / 评论(0) 分类 2015年Scientific American(一)月

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you! 科学美国人60秒

发表于:2018-12-24 / 阅读(62) / 评论(0) 分类 2015年Scientific American(一)月

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you! 科学美国人60秒

发表于:2018-12-24 / 阅读(45) / 评论(0) 分类 2015年Scientific American(四)月

Polar Bears Must Work Harder On Faster Sea Ice Treadmill奔跑吧!北极熊 Polar bears live on floating rafts of sea ice, hunting for seals. But in the Arctic Ocean north of Alaska, the cold polar wind constantly blows that ice from east to west. Wh

发表于:2019-01-20 / 阅读(60) / 评论(0) 分类 2017年Scientific American(四)月

Selective Breeding Molds Foxes into Pets狐狸变成狗 Want to make a dog? Well, wolves evolved into dogs at least once. But it turns out you can also make whats basically a dog by starting with wild foxes. Select the ones that do not seem to want t

发表于:2019-01-20 / 阅读(45) / 评论(0) 分类 2017年科学美国人(五)月

Some Hotel Bed Bug Sightings May Be Bogus酒店有臭虫?可能是假的! If you're a savvy traveler, when you hunt for a hotel you probably search TripAdvisor for any mention of bed bugs. But here's the dirty secret behind those bed bug sighting

发表于:2019-01-20 / 阅读(68) / 评论(0) 分类 2017年Scientific American(六)月

Chromosomes Combat Counterfeit Caviar染色体来打击冒牌鱼子酱 Caviar is one of the world's priciest foods: it can cost thousands of dollars a pound. And caviar from the beluga sturgeon is the most exclusive of all. But even experts have a ha

发表于:2019-01-20 / 阅读(63) / 评论(0) 分类 2017年Scientific American(六)月

For Halloween, Consider the Chocolate Midge As you unwrap a Halloween candy or two, it's worth paying your respects to the real reason for many of the treats: a tiny fly whose trick is to make chocolate possible. They're all in the family Ceratopogon

发表于:2019-02-03 / 阅读(57) / 评论(0) 分类 2018年科学美国人10月

Old Trees Are Ecosystem Gold Well, lots of people recognize that as humans get older they tend to have less and less children...trees do it the other way around.David Lindenmayer. He studies conservation, landscape ecology and biodiversity at the Aus

发表于:2019-02-13 / 阅读(74) / 评论(0) 分类 2018年科学美国人2月

Neandertal Face Shape Was All Over the Air The jutting midface of Neandertals seems to have evolved to help get large volumes of air into an active body that needed lots of oxygen. Full Transcript Neandertal walks into a bar. Bartender says, Why the

发表于:2019-02-14 / 阅读(67) / 评论(0) 分类 2018年科学美国人4月

Planting Milkweed for Monarchs? Make Sure it's Native Monarch butterflies depend on milkweed. They lay their eggs on milkweed, and their caterpillars eat only the leaves of the plant. No milkweed means no monarchs. So the best way to help declining m

发表于:2019-02-14 / 阅读(65) / 评论(0) 分类 2018年科学美国人4月

To See Gun Injury Drop Hold An NRA Meeting The annual meeting of the National Rifle Association is coming up in May. It's scheduled for Dallas. And if past events are any guide, gun injuries may actually go down in Texas, during the event.When a conv

发表于:2019-02-14 / 阅读(70) / 评论(0) 分类 2018年科学美国人3月

Psychologist Saho Takagi, a graduate student at Kyoto University in Japan, strolls into one of Japan's many cat cafes. These establishments allow customers to pay an hourly fee for the chance to cuddle some cats. They're popular in Japan because so m

发表于:2019-02-14 / 阅读(76) / 评论(0) 分类 2018年科学美国人3月

Ravens Crow with Individual Flair There's a well-known conspiracy of ravensthat's what you call a group of ravensthat likes to hang out near a zoo in the Austrian Alps. Every day these ravens conspire to steal the food that's set out for the wild boa

发表于:2019-02-14 / 阅读(94) / 评论(0) 分类 2018年科学美国人3月

Right Whales Seem To Think Before They Speak As animals grow, the sounds they make change. But some sounds continue to change, even after an animal matures. That's true for humans, and now it turns out to be true for North Atlantic right whales, too.

发表于:2019-02-14 / 阅读(123) / 评论(0) 分类 2018年科学美国人4月

Head to the mountains, and if the steep trails don't slow you down, the thin air will. There's less oxygen up thereso strenuous activity can leave you dizzy, out of breathor worse. But even though you're beat, biochemical processes are already busy a

发表于:2019-02-14 / 阅读(113) / 评论(0) 分类 2017年Scientific American(二)月