英语听力：自然百科 达芬奇的自画像？

Experts have revealed what they believe is a previously unknown portrait of Leonado da Vinci. It shows Da Vinci as a middle-aged man with piercing eyes and long flowing hair. The painting was found in December by a medieval historian, studying in the

英语听力：自然百科 墨西哥的巫师镇

In the coastal Mexican city of Catemaco, indigenous traditions have mixed with Catholicism to create a unique brand of spirituality that sometimes puts spells ahead of crucifixes. People patronize brujos, or witches, like Julia Garcia to remedy physi

英语听力：自然百科 考古揭秘佛罗里达州

The cool waters of Wakulla Springs makes it a popular place to beat Florida's heat. Tourists lounge on the May beach, while the locals prefer the opposite bank. Despite the cold-blooded company, people have visited these historic springs for years. B

英语听力：自然百科 玻利维亚金字塔

Transcript by myconsent One thousand years before Columbus, there were pyramid builders, warriors -- the architects of an empire in South America. The Tiwanaku(蒂瓦纳科人) lived in a valley of Lake Titicaca（的的喀喀湖） for 1,500 hundred

英语听力：自然百科 马丘比丘

The ancient city of Machu Picchu attracts visitors from all over the world. The most famous archaeological site in Peru, this Inca ruin floats among the clouds, 2,000 feet above the Urubamba River that runs below, and 7,700 feet above sea level. Hist

英语听力：自然百科 永恒的钻石（二）

The secret of the diamond lies in the carbon bond. Carbon is one of the most plentiful substances known to science. We find carbon in plants, animals and our bodies. Carbon everywhere. And yet diamonds are some of the rarest, most beautiful of all su

英语听力：自然百科 海水侵蚀日益严重

Climate change is hitting hard in this village in Senegal on Africa's west coast. Houses along this stretch of beach have been abandoned and left to the waters. The advance of the water is damaging many houses around and the cabanas. At one time ther

英语听力：自然百科 鸭嘴兽

They are extremely awkward on land, and not exactly graceful in the water. But there's something endearing about these egg-laying mammals. Platypuses can only be found in the rivers, streams and lakes along the east coast of Australia. But they range

英语听力：自然百科 尼尔斯湖怪之谜

Loch Ness(尼斯湖), a beautiful but forbidding（可怕的）lake in the Scottish Highlands. The first recorded sighting of a Loch Ness monster goes all the way back to the 6th century when an Irish monk was said to have chastised（责骂） the v

英语听力：自然百科 吴哥窟

In Southeast Asia, an abandoned city sprawls magnificently across the heart of Cambodia. Its hundreds of monuments contain more stone than the Egyptian pyramids, and cover more ground than modern Paris. This is Angkor, the capital of an Empire that o

英语听力：自然百科 澳洲海龟

Moreton Bay, on the eastern coast of Australia, is always a rich and diverse ecosystem. Beds of sea grass stretch over miles, providing the foundation for fish, marine mammals and some truly ancient mariners（海员）. Protected areas, like Moreton

英语听力：自然百科 约柜之谜

The Ark of the Covenant. Down through the ages, it has inspired devotion, terror and obsession. It has long been believed that this gold-encrusted chest was built to hold the Ten Commandments. The Israelites carried the Ark into virtually every battl

英语听力：自然百科 非洲沙漠化威胁民生

When Amna Ment Mohamed opens a window in her home, a fountain of sand tumbles to the floor. I am always afraid as our house can fall on our heads. The sand comes in from all sides and the windows. To reach her front door, she must climb over the sand

英语听力：自然百科 蝙蝠医院

Its nestled in the tropical landscape of north Queensland, the Tolga Bat Hospital. Here volunteers hand-raise up to 500 baby spectacled flying foxes each year. These young bats have lost their mothers to a disease caused by ticks. The bat hospital st

英语听力：自然百科 迷幻鱼

A recently discovered species of frogfish(襞鱼科) has been dubbed(授予称号) the psychedelic(引起幻觉的) fish because of the swirl of beige(米黄色的)and peach(桃红色的) zebra stripes that run from its blue eyes to its tail. Histiop

英语听力：自然百科 伊斯坦堡地下古迹

Construction of a railway tunnel under the Istanbul or Bosporus Strait in Turkey has uncovered ancient ruins older than historians believed existed. The Marmaray Project aims to upgrade about 47 miles of commuter rail that includes connecting either

英语听力：自然百科 化石改变全球变暖预言？

15 million years ago, New Zealand was a different place. The country was blanketed by dense rainforests and partially submerged under the ocean. Analysis of sedimentary(沉淀性的) rocks has shown that sea temperatures in this part of the world ros

英语听力：自然百科 海牛

The Florida Everglades, each winter, hordes（群） of manatees congregate in the warm waters here to survive the cooler weather. But they are not alone. Manatees share these waterways with boaters, and that has put them in a harm's way（危险的境

英语听力：自然百科 古罗马雕像

Israeli archeologists have discovered a rare, well-preserved, 1800-year-old figurine in Jerusalem. Dating from the time of the Roman Empire, the two-inch marble bust depicts the head of a man with a short curly beard .Archeologists believe it was use

英语听力：自然百科 麦哲伦企鹅

If you are a Magellanic penguin, this ten-mile stretch of Argentine beach is where the action is--a place to scout about a new partner(物色新伴侣), conduct a courtship and settle down to raise the youngsters. National Geographic Grantee Dee Berg