英语听力：自然百科 创意环保屋

20 homes soak off the suns rays on Washington D.C.s National Mall. They need all the energy they can get to power everything from ventilation systems to home entertainment centers. Its required in the recent Solar Decathlon(十项运动) sponsored by

英语听力：自然百科 夏威夷火山

The lava, unleashed, transforms the earth. Along its way from comb to sea, it is a force of change, leaving in its wake a course of destruction and creation. The volcano sculpts a surreal moonscape. Huge rocks ferry on the backs of flows, tower over

英语听力：自然百科 野生狮群

Many animals are born into volatile and treacherous communities. Lion cubs start by avoiding the pride. Mothers behave as though society were a dangerous thing. The cubs are born blind and helpless; and she hides them for the first six weeks, visitin

英语听力：自然百科 阿布扎比海牛

From the sculpted beauty of dessert dunes to the undersea realms of the Persian Gulf, the United Arab Emirates is a study in contrast. And while most people associate Arabia with desert life, the region is in fact teeming with marine animals as well,

英语听力：自然百科 澳洲野骆驼繁殖成灾

Camels are not usually associated with Australia, but Australia is home to the largest herd of feral camels in the world. About 12,000 dromedary camels were brought to Australia in the mid 19th century to carry people and supplies during the explorat

英语听力：自然百科 当北极变成无冰海洋

Data released this week by a team of explorers who trekked through the Arctic for three months this spring shows that North Pole will be an open sea during the summer months within 20 years. The Catlin Arctic Survey team, led by explorer Pen Hadow, m

英语听力：自然百科 太阳核磁爆

NASA's twin Stereo spacecrafts called Behind and Ahead captured rare footage of the Sun erupting over about a 30 hour period between September 26th and 27th. From the Behind perspective on the left, the long filament, darker than the Sun's surface, c

英语听力：自然百科 地震袭击太平洋岛国

A woman alive is pulled from the rubble of a hotel in Padang, Indonesia. The brunt of Wednesday's 7.6-magnitude earthquake, which originated in the sea off Sumatra Island, appeared to have been born by Padang. The death toll throughout Indonesia is o

英语听力：自然百科 天然巨钻

Miners in South Africa have found a white diamond about the size of a chicken egg. The diamond may be among the world's top 20 high-quality gems. It was discovered at the Cullinan mine, northeast of Pretoria. Petra Diamonds Limited chief executive sa

英语听力：自然百科 LCROSS 探测器撞击月球

NASA has accomplished another first. I guess my summary is really cool. Today we kicked up some moon dusts and all indications are.. its going to be a very interesting set of results. As we, uh, approach very rapidly the surface of the Cabeus crater.

英语听力：自然百科 诺贝尔奖的历史

Al Gore accepted the Nobel Peace Prize in 2007 along with Rajendra Pachauri accepting on behalf of the UN's intergovernmental panel on climate change for their work to sound the alarm over global warming. The Six Nobel Prizes are traditionally awarde

英语听力：自然百科 危险的海洋黏液状物质

It resembles the blob from science fiction stories, but it's very real. These jell-like sheets of disease-carrying mucus are spreading across portions of the Mediterranean and Adriatic Sea, where this video was taken. This stringy mass is known as ma

英语听力：自然百科 墨西哥古迹重见天日

A 16th Century convent in Mexico has reemerged as water levels in a dam reservoir have fallen to low levels. Low water levels at the Malpaso hydroelectric dam in the southern Mexican state of Chiapas have uncovered part of the convent, which was subm

英语听力：自然百科 动物大迁徙

Every fall, this herd of pronghorn antelope treks more than 100 miles from Grand Teton National Park to their winter habitat in the Upper Green River Valley of Wyoming. This phenomenal migration, one of the longest in North America, has been taking p

英语听力：自然百科 宠物针灸治疗法

At 10 years old, Maddie the Great Dan is feeling her age, arthritis and damaged nerves in her spine weakened her hind legs and brought her pain. It got so bad she had trouble walking and spent months on steroids. She faced possible surgery, but then

英语听力：自然百科 萤火虫为何会发光？

This week on Why? Tell Me Why! We are answering a viewer question as to why lightning bugs light up. Lightning bugs light up basically to find a mate. Its a way that lightning bugs communicate with each other, to call each other together, because som

英语听力：自然百科 迷路者绕圈走？

A familiar legend is that when people get lost in the woods, they walk in circles. Now, according to research conducted at the Max Planck Institute for Biological Cybernetics in Tuebingen, Germany, this is a natural human behavior. What we found was

英语听力：自然百科 死海未来可能干涸

Praised far and wide for the reputed healing powers of its minerals and waters, the Dead Sea has been luring visitors for thousands of years. But these days tourists see a very different lake from the one that others would have witnessed a few decade

英语听力：自然百科 肯尼亚：过百大象非正常死亡

In hot and dry conditions, Kenya's elephants are forced to forage for food and water along dry river beds. These majestic mammals are now under threat from the country's worst drought in twelve years. Despite desperate attempts to stay alive, many el

英语听力：自然百科 世上最高的人

A man from Turkey was officially crowned the world's tallest man on Thursday. Sultan Kosen measures 8-foot 1-inch and his status as the tallest man on the planet was verified by the Guinness Book of Records. The 27-year-old Kosen was given a tour of