自然旅游   

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An epic journey lies ahead for this Arctic Tern, a Forty thousand mile flight from its Greenland spring nest to the same patch of rocky Antarctic ground as generations before. The Earth's magnetic fi...

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Today we visit the Indiana Dunes.These hills of sand are near Chicago,Illinois.They rise on the shores of Lake Michigan,one of America's five Great Lakes.(MUSIC)More than two million people visit the ...

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What do you think of when you hear bats flying near you? Do you imagine friendly looking creatures? Probably not! Bats are not very popular creatures! And many people find them a little frightening. T...

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When temperatures drop and the days get shorter, many animals wait out winter by hibernating or migrating to warmer climates. But honey bees do something a little different to stay cozy. They hu...

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Today we take you to the National Museum of Organized Crime and Law Enforcement.The museum opened earlier this year in America's gaming capital - Las Vegas, Nevada.Christopher Cruise went there and ha...

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Science and Technology. Prehistoric reptiles. A loving mother. Family life in plesiosaurs. THE Mesozoic land was dominated by dinosaurs. At sea, though, the most abundant reptiles were the icht...

科技 史前爬行动物 慈母 蛇颈龙的家族生活 中生代时期，恐龙统治着陆地。但是在海里，最繁盛的爬行动物要属鱼龙和蛇颈龙了。大致上讲，这些动物填补了由现代齿鲸目动物海豚和虎鲸所占据的生态龛位。 鱼龙看上去的确有点象...

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Hi, Phil. How [are] you doing? Phil Ross: Fine! Steve: So, tell me about viral nanoelectronics. You are actually using viruses to do what? Phil Ross: Well, to be essentially a clothes horse on whic...

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This is the ocean twilight zone. More than 30 metres below the surface, coral reefs still flourish in the gloom. But these deep reefs could be under threat from a powerful force: Hurricanes. Scient...