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科学美国人60秒 SSS 生物多样性的信息随时间变化
Needed: Info on Biodiversity Change over Time We find that the composition of ecosystems around the world is changing much more rapidly than we expected. Indeed, much more rapidly than ecological theory predicts. 我们发现,世界各地生态系统
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科学美国人60秒 SSS 大城市人均推文减少
Big Cities Have Fewer Tweeters Per Capita Walking in New York City is almost a competitive sport. And people in cities really do walk faster than their country counterparts2.8 feet per second faster, according to a worldwide study in the 1970s. But t
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科学美国人60秒 SSS NRA会议期间枪击事件下降
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
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科学美国人60秒 SSS 船只噪音干扰鱼儿学习
Boat Noise Means Fish Can't Learn Their Lessons If you've ever gone snorkeling or scuba divingyou know how peaceful it sounds under there... aside from the crackling sound of snapping shrimp. 你如果浮潜或者潜过水,就会知道水下听起来
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科学美国人60秒 SSS 别忘了退后一步看问题
Animal Coloration Can Serve Double Duty Nature may be red in tooth and claw. But one plucky caterpillar dresses in orange and black to avoid becoming somebodys lunch. Whats really surprising, though, is that this distinctive set of stripes can serve
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科学美国人60秒 SSS 科学合作 无所不能
Worldwide Effort Says Together Science Can Collaboration in science across the world is the key to a better world in the future. Doesnt matter whether its drug resistance or climate change or social inequalities. All of these, I believe, can be broac
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科学美国人60秒 SSS 人类回声器原理类似蝙蝠回声
Human Echolocators Use Tricks Similar to Bats Many bats use a system similar to sonar to navigate in the dark. They send out high frequency sound, sometimes as clicks, and get information about their surroundings by the timing and quality of the soun
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科学美国人60秒 SSS 萌宠猫咪
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
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科学美国人60秒 SSS 寻找天外之山
Searching the Heavens for Mountains In the last few decades, astronomers have discovered thousands of exoplanets orbiting other stars. Now, scientists want to know what they look like. Do they have oceans? Atmospheres? Researchers have even searched
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科学美国人60秒 SSS 唾液蛋白可能抑制肠道无序状态
Saliva Protein Might Inhibit Intestinal Anarchy 唾液蛋白可能抑制肠道无序状态 Every day, you produce one to two liters of spit. It kick-starts digestion and helps you swallow. And it helps prevent bacterial infection in your mouth. 每天,
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科学美国人60秒 SSS 多活多遭罪?!
Life Extension May Add Just Bad Time Living longer doesnt necessarily mean living better. Thats the lesson from the tiny roundworm called C. elegans, long a workhorse in basic biology lab work. The research is in the Proceedings of the National Acade
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科学美国人60秒 SSS 无人机的生物用途
Drones Could Help Biologists Tally Birds Ecologists crouching quietly amidst vegetation, using binoculars to tally birds in a roost, may soon be a charming relic of the past. Because a new study shows that, when it comes to getting an accurate avian
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科学美国人60秒 SSS 北极热浪与雪风暴有关
Arctic Heat Waves Linked to Snowpocalypse-Like Storms February was unusually hot in the arctic. Thawing out temperature: 35 degrees Fahrenheit.It made big news when it got to 35, I don't know if that's t-shirt weather yet, but 北极在二月时异常炎
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科学美国人60秒 SSS 心情很重要哦~
Bouncy Gait Improves Mood 心情很重要哦~ A good mood may put a spring in your step. But the opposite can work too: purposefully putting a spring in your step can improve your mood. Thats the finding from a study in the Journal of Behavior Therap
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科学美国人60秒 SSS 路易丝斯劳特是国会食品安全领导者
Louise Slaughter Was Congress's Food Safety Champion 路易丝斯劳特是国会食品安全领导者 Legislation to restrict the current overuse, I would say abuse, of antibiotics by farmers who raise livestock for human consumption.Louise Slaughter