国家地理-2008-04-12 Alternative Energy 可替代能源
When the wind picks up at the foot of the Rockies, there are those who believe they can hear the future. At the National Renewable Energy Laboratory, making alternative power sources competitive with fossil fuels has been a mission since the energy
国家地理-2008-04-14 A Cat Has Nine Lives 猫有九条命
A cat is said to have nine lives because it is more tenacious of life than many animals. People always think that due to the speed, cleverness and flexibility of cats, they can stay alive in most difficult situations when other animals would have be
国家地理-2008-04-17 New Search For ET 寻找外星人（上）
Is anyone out there? For over 40 years scientists have been searching for extraterrestrial intelligence, but theyve found nothing. Now the new Allen Telescope Array, a string of 350 radio telescopes, is being built 300 miles north of San Francisco a
国家地理-2008-04-19 New Search For ET 寻找外星人（下）
Is anyone out there? For over 40 years scientists have been searching for extraterrestrial intelligence, but theyve found nothing. Now the new Allen Telescope Array, a string of 350 radio telescopes, is being built 300 miles north of San Francisco a
国家地理-2008-04-21 Cheetah vs. Gemsbok 猎豹与大羚羊的角力
Two cheetah cubs think they've found an easy meal when they catch a gemsbok calf, until they are confronted by the calf's protective mother. It's morning in the Kalahari, and this female cheetah has discovered that her cubs are growing ever more ind
国家地理-2008-04-24 Spacewalks 太空行走，看上去很美
Floating free in the hostile vacuum of space, astronauts push the boundaries of exploration. Join them on an incredible journey as spacecraft Voyager explores the solar system. From planetary orbit, the earth and heavens look serene. But the vacuum
国家地理-2008-04-26 Kenya's Aids Crisis 肯尼亚的艾滋病危机
In Kenya, a Massaai elder is changing cultural practices that could help HIV infections spread. Learn how education and traditional customs affect the spread of diseases in Africa. This is Kibera, a slum in Nairobi, Kenya, home to about 1 million pe
国家地理-2008-04-28 Mount Kilimanjaro 乞力马扎罗山
It is called the Roof of Africa. Rising 19,340 feet nearly 4 miles into the sky, Mount Kilimanjaro is the highest point on the entire African continent. Located in northeastern Tanzania in east Africa, Mount Kilimanjaro is about equal distant from C
国家地理-2008-04-30 Farm Restoration 农场变湿地
Dale Aden has been farming most of his life, just like his father, and his fathers father. I am a third generation farmer on this land. His land is in Okabena, Minnesota, right along the Okabena creek, where for many years, Aden watched helplessly a
国家地理-2008-05-03 Planetary Life After Death 浴火重生的行星
Like a phoenix rising from the ashes, astronomers have found a whole new solar system may be forming in the wake of a star's violent death. This is the Hidden Universe of the Spitzer Space Telescope, exploring the mysteries of infrared astronomy wit
国家地理-2008-05-05 Vampire Bats 恐怖的吸血蝙蝠
Here are some happy vampire bats. What's causing all this giddiness? A great, big, fat meal has arrived. You can practically hear these bats going Oh, boy! Oh, boy! Better yet, the victim is asleep. This is gonna be like, well, taking blood from a s
国家地理-2008-05-08 Coral Reefs 岌岌可危的珊瑚礁
The waves of these azure seas hide an abundant treasure. Below the waves, coral reefs provide a habitat for teeming life, a life with a kaleidoscope of color. In oceans around the world, clear and well-circulating waters encourage corals to anchor a
国家地理-2008-05-11 Fighting Fire with Fire 以火攻火 保护森林
It's been protected from human impact since 1909. With three million acres, nearly a half million under water, Superior National Forest is largely unspoiled. But now the survival of this national treasure rest with those who would see some of it bur
国家地理-2008-05-12 Wolf Hunting Tactics 合作至上的狼群
We are here in Yellowstone National Park to follow some grey wolves and observe the deadly brilliance of the pack. Theyve learned to cooperate, hunting their prey with many acting as one pack. This mother grizzly knows how to protect its cub and its
国家地理-2008-05-15 Earthquake 地震的危害
April 18, 1906, California's San Andreas Fault snaps, shaking San Francisco for nearly 60 terrifying seconds .When the trembling stops, the disaster is only beginning. Gas lines rupture, setting off massive fires, some 700 people die. Most of the ci
