Intelligent Crows Use Tools

Intelligent Crows Use Tools What do otters, chimpanzees, and one species of crow have in common? All three are animals. They also use tools. Scientists have long known that a crow native to New Caledonia is able to use tools. The birds use them to re

发表于:2018-12-16 / 阅读(39) / 评论(0)

2016年VOA慢速英语(九)月

科学美国人60秒 SSS For River Otters, Social Life Is Shaped by the Latrine

River otters, like other social animals, have to carefully weigh the costs and benefits of hanging out in large groups. A big group makes it easier to catch fish, which seems like a good deal, but there's a downside to social life too. More otters me

发表于:2018-12-24 / 阅读(52) / 评论(0)

2016年Scientific American(十)月

国家地理:Sea Otters in Danger 拯救海獭

For several years something mysterious has been plaguing sea otter populations off the coast of California. The animal may have seizure s, it may shake, it may act like it's weak, uh, it may not seem like it's very aware of its surroundings, and it m

发表于:2018-12-30 / 阅读(47) / 评论(0)

国家地理2007年

经济学人11:野生水獭 Otters in the wild

Books and Arts; Book Review; 文艺；书评； Otters in the wild 野生水獭 Beguiling carnivores 欺骗性的肉食动物 A muse to poets, a mystery to scientists 诗人的灵感，科学家的谜团 Poets dig my style 诗人尽挖我的风采 Ot

发表于:2018-12-31 / 阅读(44) / 评论(0)

经济学人文艺系列

经济学人18:第一只会用工具的熊

Science and Technolgy. 科技。 Animal behaviour. 动物习性。 Smarter than the average bear. 一只特别聪明的熊。 The first case of ursine tool use. 第一只会用工具的熊。 PRIMATES apart, few mammals employ tools. Sea otters use r

发表于:2019-01-26 / 阅读(31) / 评论(0)

经济学人科技系列

VOA慢速英语20060607b

EXPLORATIONS - Above Ground but Under the Sea: Visiting Some Popular AquariumsBy Nancy Steinbach Broadcast: Wednesday, June 07, 2006 (MUSIC) VOICE ONE: I'm Steve Ember. VOICE TWO: The glass dome of th

发表于:2019-01-30 / 阅读(36) / 评论(0)

2006年慢速英语（六）月

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a. testudineuss

adjacent sea marginal sea

aspergillar pseudotuberculosis