The massive earthquake that struck Chile in February 2010 might have shortened Earth's day by 1.26 microseconds, according to calculations by a NASA scientist. An EarthSky Facebook friend asked us how. And the answer is for the day to get shorter, Ea

发表于:2018-12-28 / 阅读(49) / 评论(0) 分类 初学者听力文摘精选

Some call it the hormone of love. Its oxytocin and it helps moms bond with and breast-feed their babies, and even keeps romantic couples content. Now a study suggests that this same hormone might also help people with autismby improving their social

发表于:2018-12-28 / 阅读(46) / 评论(0) 分类 初学者听力文摘精选

Jon Foley: Agriculture turns out to be one of the biggest emitters of greenhouse gases. About 30% of all of our greenhouse gases come from either clearing land or farming land we already have. That's more than all the worlds electricity. It's more th

发表于:2018-12-28 / 阅读(59) / 评论(0) 分类 初学者听力文摘精选

The complex vocalizations of songbirds are learned, not inherited. Some even have regional accents. Wrens, thrushes and other songbirds don't hatch with their impressive musical talents. They learn to sing their extensive repertoires by listening to

发表于:2018-12-28 / 阅读(71) / 评论(0) 分类 初学者听力文摘精选

Don: Some people seem to need significantly less sleep than others. Yael: Tell me about it. I have a friend who swears that she sleeps only five hours a night. If she's telling the truth, then she must be bionic. She seems to have plenty of energy, a

发表于:2018-12-28 / 阅读(54) / 评论(0) 分类 初学者听力文摘精选

In this Moment of Science Yael and Don discuss how women can see more color. Yael: Not only are eight percent of men colorblind, but even compared to men who can distinguish between reds and greens, many women may live a more colorful existence. That

发表于:2018-12-28 / 阅读(130) / 评论(0) 分类 初学者听力文摘精选

The title track of Black Rose's newest CD, is called Sky Stamp. It opens with a traditional Mongolian long-song: This is the music of vast open spaces and big blue skies. It is the music of Mongolian nomads, calling out across the grasslands, soothin

发表于:2018-12-28 / 阅读(64) / 评论(0) 分类 初学者听力文摘精选

Don: All right, Yael, you're a moth. And mating for you is a big deal because it takes eight or nine hours. So the last thing you want is for some predator to interrupt you and your mate in the act. Yael: I'm guessing that's true not just for moths.

发表于:2018-12-28 / 阅读(85) / 评论(0) 分类 初学者听力文摘精选

Picture this: A foraging squirrel comes into range of a hungry, coiled rattlesnake. The squirrel realizes the danger too late--the rattlesnake strikes out and bites, fangs pumping venom deep into the squirrel's small body. The poison doesn't kill imm

发表于:2018-12-28 / 阅读(80) / 评论(0) 分类 初学者听力文摘精选

Lots of people have had dreams that seem to foretell the future. Some psychologists attribute this to retrieval cues. 很多人都曾做过似乎能预示未来的梦。一些心理学家把这种现象归因于复得线索。 Retrieval cues? 复得线

发表于:2018-12-28 / 阅读(80) / 评论(0) 分类 初学者听力文摘精选

Some methods of preserving food are easy to understand. 一些保存食物的方法很容易理解。 For example, it's easy to see that freezing your food, or packing it in salt, would make it inhospitable to the microbes which would otherwise cause

发表于:2018-12-28 / 阅读(72) / 评论(0) 分类 初学者听力文摘精选

Baby's Bacteria Related to Birth Method 出生方式决定婴儿携带什么样的细菌 Each of us harbors a unique collection of bacteria, on our outsides and our insides. Now, scientists are finding that the bacteria you get at birth may depend on

发表于:2018-12-28 / 阅读(84) / 评论(0) 分类 初学者听力文摘精选

十几岁的孩子,在身体、智力、品德等各方面都在快速地成长,也会跟父母发生很多碰撞和冲突。如何把握好这个阶段的教育,对很多父母来说都是人生最大的考验。 You've lived through 2 AM feed

发表于:2018-12-28 / 阅读(83) / 评论(0) 分类 初学者听力文摘精选

Secondhand Smoke 二手烟 Secondhand smoke is the combination of sidestream smoke (the smoke given off by a burning tobacco product) and mainstream smoke (the smoke exhaled by a smoker). 二手烟包括侧流烟(烟草产品燃烧释放的烟)和主

发表于:2018-12-28 / 阅读(82) / 评论(0) 分类 初学者听力文摘精选

The 2008 Sichuan earthquake was a deadly earthquake, and occurred on May 12, 2008, killing an estimated 68,000 people. The earthquake was also felt in nearby countries and as far away as both Beijing and Shanghai where office buildings swayed with th

发表于:2018-12-28 / 阅读(102) / 评论(0) 分类 初学者听力文摘精选

To Juice or Not to Juice? 果汁该喝还是不该喝? Nutrition 营养 Juice may be tasty, but its not really that nutritious. While orange juice is an excellent source of vitamin, it doesnt contain a significant amount of other minerals and vitamin

发表于:2018-12-28 / 阅读(135) / 评论(0) 分类 初学者听力文摘精选

Under Pressure压力之下 In physics, pressure depends on the amount of force acting on a surface and on the size of the surface. The smaller the surface, the greater the pressure. Lets say that a woman steps on your toe; she weighs 120 pounds. If s

发表于:2018-12-28 / 阅读(92) / 评论(0) 分类 初学者听力文摘精选

Believe In God And Feel Better 有信仰会感觉更好么? Whether or not a treatment for an illness or disorder works usually doesnt depend on whether we believe it will work. For example, if you have an MRI, barring a malfunction, the technology

发表于:2018-12-28 / 阅读(44) / 评论(0) 分类 初学者听力文摘精选

NASA Wants To Teach You About Hydroplaning 美国宇航局教你如何防滑 What is hydroplaning? 什么是打滑现象? Hydroplaning happens when a vehicle moves too quickly along a wet road. A layer of water accumulates under the tires; they lif

发表于:2018-12-28 / 阅读(39) / 评论(0) 分类 初学者听力文摘精选

How Far Away Is The Horizon? 地平线有多远? Heres a neat question you may have never thought to ask. How far away is the horizon? 你可能从未思考过这个简单的问题,地平线有多远? Flat Earth 地球是平的 Think about it.

发表于:2018-12-28 / 阅读(49) / 评论(0) 分类 初学者听力文摘精选