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恐惧研究 Few behaviors are more hard-wired into the human psyche than fear. And its a good thing，too. Fear of outsiders keeps members of animal troops safe from rivals. Fear of predators protects against crushing canines and masticati...

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机器模拟人 Robot soldiers in any form may be decades away, but that task is simple compared with the skills and efforts needed to produce a robot that could be mistaken for a real human. Creating a humanoid robot is the ultimate goal f...

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美国电影 Beside Macys Department Store in Herald Square New York City，there is a plaque commemorating the first public showing of a motion picture on a screen in the United States. It was here，on April 23，1896，at Koster and Bial...

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天才本质 In 1904 the French minister of education，facing limited resources for schooling，sought a way to separate the unable from the merely lazy. Alfred Binet got the job of devising selection principles and his brilliant solution...

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电击实验 Few years ago，in one of the most fascinating and disturbing experiments in behavioural psychology，Stanley Milgram of Yale University tested 40 subjects from all walks of life for their willingness to obey instructions given...

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英国天才工程师 Isambard Kingdom Brunel(1806-1859)，English engineer，only son of Sir M.I Brunel，was born at Portsmouth on the 9th of April 1806. He displayed in childhood singular powers of mental calculation，great skill and ra...

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计时器发展史 In Europe during most of the Middle Ages(roughly 500 CE to 1500 CE)，technological advancement virtually ceased. Sundial styles evolved，but didnt move far from ancient Egyptian principles. During these times，simple s...

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海底热源 The three-person submersible Alvin sank through the cold，dark waters of the Pacific Ocean for more than an hour, finally touching down on the sea floor more than 8,000 feet below the surface. It was December 1993，and the sc...

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未来汽车 There is still a lot of fossil fuel in the world but the fuel that is easy to find and to extract from the ground is disappearing. Those searching for new supplies of fossil fuel must search in places that are more difficult to...

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小冰河期 Most of the Little Ice Age occurred well before the Industrial Revolution and the widespread burning of fossil fuels，so scientists are confident that its climatic convulsions had purely natural causes. The event fascinates sc...