英语听力：探索发现 2013-01-13 冰河新新州 Ice Age Oasis—14

Some of this ice age dung was found beneath the skull in the Aucilla. The dung contained plant remains that tell us what the mastodon was browsing on 13,000 years ago or morea mixture of trees and grasses. This suggests that ice age Florida was drier

侏罗纪搏击俱乐部 第125期:躺下等待猎物

Like all raptors, Utahraptor was one of the top predators of its time. 和所有迅猛龙一样，犹他盗龙是当时的顶级掠食者之一。 But unlike its cousins, this raptor was not built for speed. 不过跟它的亲戚们不同，这种迅猛

60秒科学:大象果真怕蚂蚁

We all know that elephants arent really scared of mice. But a new study shows that theyre really not crazy about something even smaller: ants. In fact, elephants dislike ants so much that they avoid acacia trees that harbor the tiny, six-legged necta

Wild Africa - Deserts 浩瀚沙漠 - 14

The Arabian camel--not even a native , was domesticated in the deserts of Asia and brought to Northern Africa as a means of transport. In the past , Tuareg nomads used camels to move slaves, gold and

Wild Africa - Deserts 浩瀚沙漠 - 9

It’s the wettest of all African deserts, the great Kalahari. The sands of the Kalahari cover more of southern Africa than any other desert. But the higher rainfall here gives it a very distinctive a

VOA慢速英语2012 Agriculture Report - From Ancient Farmers, Lessons for Today's Amazon

Agriculture Report - From Ancient Farmers, Lessons for Today's Amazon 农业报道 - 亚马逊河流域远古耕作方法对如今的启示 This is the VOA Special English Agriculture Report. 这里是美国之音慢速英语农业报道。 South Ame

VOA常速英语2008年-Protecting Nature in Guinea Collides with Human

By Kari Barber Mt. Nimba, Guinea 29 February 2008 Where the West African nation of Guinea meets Liberia and Ivory Coast stands Mt. Nimba, the highest point in the region. The mountain range is home to rare plant and animal species. Because it is on t

美联社新闻一分钟 2006-12-10

1. A gunman identified as Joe Jackson fatally shot 3 people and held a hostage at gunpoint in Chicago over what authorities are calling a patent dispute surrounding a toilet seat invention. Police sho

美国国家公共电台 NPR Heavy Screen Time Rewires Young Brains, For Better And Worse

Heavy Screen Time Rewires Young Brains, For Better And Worse play pause stop mute unmute max volume 00:0003:17repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your Flash plu

科学美国人60秒 SSS 2013-09-11

In the east African savanna, pools of water form during the rainy season only to dry up a few months later. Being a fish in one of these temporary ponds is a challenge. To survive, they race to maturity, with the shortest generation time of any verte

英语听力：自然百科 大迁徙之繁衍生息 Need to Breed—8

In the war-racked country of Sudan, lies Boma National Park, the largest intact savanna in East Africa. Mile upon mile of what looks like pristine wilderness unfolds. But much of this is an empty paradise. During the Sudan's decades of ruinous civil

英语听力：自然百科 环球风情：非洲中西部

Were heading now to west and central Africa, well this region probably didn't get as much exposure as the rest of Africa, but for the intrepid traveler, that's just one of its many charms. You see, less tourists means more chances for you to meet loc

英语听力：2013-03-17 猛玛象进城记 Mammoths to Manhattan—21

This may look like a safari through the African savanna. In fact it's a theme park in Florida. And it allows people to experience a world outside their own. In some ways, they are visiting a land from another time. 14 thousand years ago, large parts

英语听力文摘 English Digest 223、DNA帮助捕获偷猎者

DNA Helps Catch Poachers 科学家们利用一种革命性的基因技术成功确定了走私犯屠宰大象的非洲地区，这些大象沦为全世界非法象牙贸易的受害者。利用非洲大象的DNA图谱，他们已发现最近缉获的象