VOA常速英语2018-- 非害虫昆虫的减少引起科学家们的担忧

Scientists Fear Non-Pest Insects are Declinin Butterflies are as beautiful as the flowers they feed on.But they appear to be less abundant than in years past and that has scientists worried.Because butterflies, bees and other beneficial bugs pollinat

常春藤解析英语【82】Flying High with Sugar Gliders叫我

Flying High with Sugar Gliders 叫我小飞侠 by Chris Brown Meet a high-flyer with a taste for sweet treats. 来看看嗜吃甜食的空中飞鼠。 The next time you find yourself in a forest in Australia, look up. You might just see a small, grey

VOA慢速英语--研究人员发现入侵物种的“善良”一面

Researchers Find Bright Side to Some Invasive Species Non-native species present threats to natural environments across the world by pushing out native organisms. Their presence can seriously damage ecosystems that provide clean water, food and other

VOA标准英语2011--ontrolled Time Machine Tests Prairie Fut

Climate-Controlled Time Machine Tests Prairie Future Researchers from the University of Oregon have set up a kind of time machine to test how a warmer climate might affect grasslands and prairies around the world. Today, grasslands cover between 25 a

科学美国人60秒 SSS Widening the Suez Canal Ushers In Underwater Invaders

Widening the Suez Canal Ushers In Underwater Invaders 苏伊士运河对地中海水下物种的侵害 The Mediterranean Sea is home to some 17,000 native species. But it's also home to a growing number of non-native species: 756 at last count. 756 m

英语博客：Labels of the past.

have probably learned from my podcasts, that the region where I live is agricultural. It is rural, the communities are small, and its post native american indian roots lie in the apple tree. I realised the other day how I take the apple tree for gran

SSS 2011-06-08

You shouldn't judge a book by its cover, and you shouldn't judge a species by place of its origin, so say ecologists in the commentary in the Journal Nature. They argued that conservation should access organisms based on their impact on the local env

SSS 2012-02-10

This is scientific Americans, 60 second science, I'm Sarah Fecht. Got a minute Thats not a bird whistling. This sound was recorded 2000 feet below the oceans surface. Scientists postulated decades ago that deep-sea animals might use sound to navigate

VOA标准英语2012--Teens Help Revive California Nature

Teens Help Revive California Nature Changed ecosystem Located a little more than an hour off the coast of Southern California by the daily ferry, Santa Cruz Island is a a nature preserve. In the 19th and early 20th centuries, it was used for ranching

VOA标准英语2012--Tree Deaths Linked to Climate Change

Tree Deaths Linked to Climate Change Stanford University graduate student William Anderegg has seen this forest die-off firsthand. His doctoral thesis documents the impact of drought on trembling aspen, the most common tree in North America. These ar

VOA标准英语2014--本地蜜蜂可能帮助拯救农作物

Native Bees May Help Save Crops 本地蜜蜂可能帮助拯救农作物 BELTSVILLE, MARYLAND In June, U.S. President Barack Obama called for a federal strategy to promote the health of bees and other pollinators that have been declining. The honeybee

英语单词记忆法：3分钟教你学会背单词！

亲爱的同学们，期末考马上就要到啦，你是否还在抓耳挠腮地苦苦背单词?每天默念一百遍，但是明天起床又忘了有木有?那都是因为方法不对!掌握了好方法，背单词so easy! 难度指数：★ 时间要

Animal Sanctuary in Australia

Tasmanian Devils, pygmy-possums and native parrots are just some of Australia's threatened species. But thanks to a successful breeding season, one animal sanctuary is optimistic for the future survival of these creatures. Our reporter Li Dong has th

【英语时差8，16】海洋最需

Don: Today, on A Moment of Science, the Ocean's Most Wanted. Sure, they might seem innocent and downright lovely in your aquarium, but released into the wild, your plants and fish can knock aquatic ecosystems right out of balance. Today's invasive sp

经济学人285:转基因树木 进军森林

Science and technology 科学技术 Genetically modified tree 转基因树木 Into the wildwood 进军森林 A GM species may soon be liberated deliberately 一种转基因树木不久或将大量种植，但很审慎 ONCE upon a time, according to f

你们敢来中国吗 小龙虾占领苏格兰

Forget Nessie: there's another insidious creature living in the waters of Scotland. The story starts in the streams and lakes of the northwestern United States, where North American signal crayfish are a familiar sight. Turn over a rock and you may w

新西兰英语 286 Duck Shooting

From the first weekend in May until July, hunters in New Zealand are allowed to shoot ducks for sport. This is called the duck shooting season. Hunters have to get a licence and can kill only a limited number of ducks each day. There are only three t

我们终于知晓了树的秘密

I am vertical/But I would rather be horizontal, wrote Sylvia Plath, meditating on the consequences of a treelike existence. A team of researchers from the Vienna University of Technology recently announced another perspective on arboreal repose. Usin

听播客学英语 121 语言

Last week a woman called Marie Smith Jones died. She was 89 years old and she lived in Alaska in North America. Marie was the last person alive to speak a language called Eyak. Eyak is, or was, one of the native North American languages. Linguists ha

英语听力文摘 English Digest 239、外来物种入侵

Oceans Most Wanted 伴随着人们的经济活动和国际交往，一些物种由原生存地借助于人为作用或其他途径移居到另一个新的生存环境并在新的栖息地繁殖并建立稳定种群，这些物种被称为外来物种。