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The solution lay in three key architectural innovations that formed the secret of Rome's great monuments. The most important, is the arch. The arch is an almost perfect design for bearing heavy loads. And that design is so simple. A series of wedge -

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This is Scientific Americans 60-second Science. Im Karen Hopkin, This will just take a minute. Have you ever said, I know it like the back of my hand? Well, how well do you know the back of your hand, or the back of your knee, or behind your ears? Pr

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This is Scientific American's 60-Second Science,I am Steve Mirsky.Got a minute? Its accepted that a large meteor impact 65 million years ago was responsible for the mass extinction of the dinosaurs. Which opened up niches for birds and mammals. But l

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This is scientific American sixty seconds science, I'm Cynthia Graber, this will just take you a minute. Tea and coffee are drunk worldwide, far beyond their original ecological niches. Now it looks like another caffeinated beverage also gained popul

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Adidas AG will aim at niches such as high fashion and children's wear as it seeks to overtake Nike Inc. in China and become the nation's top sports-apparel brand. 为超越耐克(Nike Inc.)成为中国最大的运动装品牌，阿迪达斯(Adidas AG

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Insect exoskeletons also work like body armor, 昆虫的外骨骼就像保护身体的盔甲一样 protecting insects against the outside world and helping them cope with habitats that other creatures can't. 抵御外部环境的伤害，帮助它们应

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If it is possible, imagine the effect upon the beholder: 不妨想想旁观者的内心震撼， this precipice of ice, with tremendous cracking, is falling toward us with a majestic and awful motion. 那悬崖峭壁的冰山上端，訇然巨响纷纷

经济学人83:蛇颈龙的家族生活

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经济学人58:史前爬行动物 蛇颈龙的家族生活

Science and Technology 科技 Prehistoric reptiles 史前爬行动物 A loving mother 慈母 Family life in plesiosaurs 蛇颈龙的家族生活 THE Mesozoic land was dominated by dinosaurs. 中生代时期，恐龙统治着陆地。 At sea, though,

经济学人66:金融技术公司

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60秒科学:Bacteria on the Skin You're In

Have you ever said, I know it like the back of my hand? Well, how well do you know the back of your hand? Or the back of your knee? Or behind your ears? Probably not as well as scientists at the National Institutes of Health who just completed a sur

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China shuts down 97,000 blog, microblog accounts in anti-porn campaign

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For most of that time of life on Earth, living organisms have been relatively simple -- single cells. 地球的大多数时间，生物体多是以简单的单细胞存在的。 But they had great diversity, and, inside, great complexity. 但是它们是

经济学人:当机器成为超级智能 人类该如何应对?

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Internet Opens World to Microloan Investors

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The guards smiled at him from their niches as he wound his way down the turret stair, carrying the sword in his good hand. 他佩着宝剑走下高塔楼梯，站在壁龛里的守卫微笑着看他。 Sweet steel, one man said. 真是把好剑。其中