Lion Conservation Challenges Giraffe Protection The giraffe is an icon of the African savannah. The lion is the top predator of the ecosystem. Both animals face uncertain futures, and both are subjects of intense, ongoing conservation work. Now a stu

发表于:2019-02-13 / 阅读(105) / 评论(0) 分类 2018年科学美国人2月

Homebodies Economize on Energy Use 家庭节能有助于能源利用 The rise in technology, particularly for information and communication, is radically transforming lifestyles. For example, many people can now work from home and still be in almost

发表于:2019-02-13 / 阅读(78) / 评论(0) 分类 2018年科学美国人2月

Woodpeckers Drum to their Own Tune Humans can recognize each other by voice alone. I sound different from other 60-Second Science reporters, for example. In fact, lots of non-human animals, of all types, use voices to distinguish familiar individuals

发表于:2019-02-13 / 阅读(56) / 评论(0) 分类 2018年科学美国人2月

Holiday Cheer Leads to Birth-Rate Spike In the United States, theres a holiday that goes hand in hand with romance. So much so that nine months later, theres a spike in the number of babies born. Valentines day? Wrong! It seems that people in the U.S

发表于:2019-02-13 / 阅读(67) / 评论(0) 分类 2018年科学美国人2月

Killer Whale Culture Revealed By Mimicking Us Killer whales, also called orcas, are like dolphins and belugasthey all have a wide vocal repertoire. But orcas also have uniquedialects among different pods. Which suggests the animals can learn new and

发表于:2019-02-13 / 阅读(75) / 评论(0) 分类 2018年科学美国人2月

Canada Geese Taking a Winter Staycation Over the last few decades, Canada geese have been wintering further and further north, which was interesting, because the winters have gotten a little more mild over the last few years, but still its pretty col

发表于:2019-02-13 / 阅读(59) / 评论(0) 分类 2018年科学美国人2月

Aggressed-Upon Monkeys Take Revenge on Aggressor's Cronies Dont mess with a monkey. Because if you do, hes might take revengeon your family and friends. Thats according to a study of Japanese macaques, which shows that monkeys keep track of eachs oth

发表于:2019-02-13 / 阅读(104) / 评论(0) 分类 2018年科学美国人2月

Poorer Kids May Be Too Respectful at School Kids from different economic backgrounds behave differently in classrooms. For example, working class kids are less likely to ask for help from teachers than are their middle class counterparts. And when th

发表于:2019-02-13 / 阅读(66) / 评论(0) 分类 2018年科学美国人2月

Insects Donate DNA to Unrelated Bugs 昆虫捐献DNA给无关的虫类 You can thank your parents for your DNA. Because humans share genes through sexual reproduction, passing DNA from parent to child. It's known as the 'vertical transfer' of DNA. No

发表于:2019-02-13 / 阅读(65) / 评论(0) 分类 2018年科学美国人2月

Seabird Feathers Reveal Less-Resilient Ocean Today we have sophisticated buoys packed with instruments, and robotic underwater drones. But a more than a century ago the seas were surveyed by different types of autonomous data-gathering instruments. W

发表于:2019-02-13 / 阅读(71) / 评论(0) 分类 2018年科学美国人2月

Wildfires Spike Wine with Smoky Notes The fires that ripped across Napa and Sonoma last year damaged some two dozen wineries, and burned others completely to the ground. 去年发生在纳帕和索马诺的大火损毁了二十多家酒厂,并将其他

发表于:2019-02-13 / 阅读(70) / 评论(0) 分类 2018年科学美国人2月

Baby Whales Pecked to Death by Gulls Gulls. You may have noticed that gulls can be pretty aggressive when it comes to grabbing food. But that behavior is more intense than you may know. Some kelp gulls snack on baby whales. Live baby whales. 海鸥啊

发表于:2019-02-13 / 阅读(79) / 评论(0) 分类 2018年科学美国人2月

Mosquitoes Learn the Smell of Danger When it comes to sucking blood, mosquitos can play favorites: they show preferences for particular species or even certain individuals. At the same time, their tastes can change, depending on the circumstances. On

发表于:2019-02-13 / 阅读(84) / 评论(0) 分类 2018年科学美国人2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(71) / 评论(0) 分类 2018年科学美国人2月

Bees Prefer Flowers That Proffer Nicotine We humans enjoy coffee and tea, to give our brains a caffeine boost. And bees sometimes sip nectar that naturally contains caffeine, which seems to enhance their memory. Now a study suggests that bees enjoy a

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

Your Cat Thinks You're Cool We tend to see housecats as aloof and independent, mostly preferring to engage in their own kitty business. But that assumption may be littered with error. Because a new study finds that, given a choice, Fluffy would proba

发表于:2019-02-13 / 阅读(69) / 评论(0) 分类 2018年科学美国人2月

Spiders Gobble Gargantuan Numbers of Tiny Prey By now, you may have heard about a study that came out a couple of weeks ago about spiders. The study got a lot of attention because coverage of the research often focused on the idea that spiders could

发表于:2019-02-13 / 阅读(88) / 评论(0) 分类 2018年科学美国人2月

New Map Knows Noise It's harder and harder to find peace and, especially, quiet. Just ask a field researcher deep in the wilderness. Even in the most remote parts of Alaska the sound of a jet crossing overhead is all too common. 寻求安宁越来越难

发表于:2019-02-13 / 阅读(70) / 评论(0) 分类 2018年科学美国人2月

Fecal Transplanters Fish Out Key Ingredient These days, antibiotics are no silver bullet. In fact, if you get them in the hospital, you may end up with an additional infection. Like the bug Clostridium difficile, or C. diffwhich infects more than 300

发表于:2019-02-09 / 阅读(92) / 评论(0) 分类 2018年科学美国人2月

Undersea Recordings Reveal a Whale's Tale One of the drawbacks of researching blue whales is that most of the time you can't see what your study subjects are doing, or how many there areor even, where they are. Satellite tags have revealed some of th

发表于:2019-01-18 / 阅读(68) / 评论(0) 分类 2018年科学美国人2月