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THE PROPERTIES OF WATER Earth is an ocean planet. About three billion years ago, life on our planet began in the deep blue seas. Ninety-nine percent of the living space on earth is in the oceans. Marine life is incredibly rich and varied. There are

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AS IT IS 2015-09-30 Glider Plane to Soar Stratosphere for Data Gliders are light aircraft that fly with no engine. They are pulled by a powered plane into the sky and set free to fly on air currents. They soar on wind currents called mountain waves.

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This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? Athletes have obviously been tempted to use performance enhancing anabolic steroids. Drug testing may discourage such use. But a new study finds that some of the perfo

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中文 英文 缩写 * （符） star (symbol) [美国]电气和电子工程师学会 Institute for Electrical and Electronic Engineers IEEE “请发码”信号

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Dieting isnt always easy, particularly if you have a sweet tooth. But by adding strawberries to your diet, you can enjoy a range of guilt-free dishes, drinks and snacks any time of day. Best of all, strawberries are low in calories, high in fiber, fa

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Theincrease inthenumbersofmarriedwomenemp- (50)loyedoutsidethehomeinthetwentieth centuryhadlesstodowiththe mechanizationofhouseworkandan increaseinleisuretimeforthesewomen thanitdidwiththeirowneconomic

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And then we decided to take New York as a test case, 后来我们决定拿纽约做实验案例， and we looked at Lower Manhattan. 研究曼哈顿下城。 And we mapped all the building area in Manhattan. 我们画出曼哈顿建筑区的地图。

TED演讲:如何重新设计公寓建筑(1)

When, in 1960, still a student, 1960年我还是学生时， I got a traveling fellowship 拿到出国留学的奖学金， to study housing in North America. 研究北美的住宅建筑。 We traveled the country. 我们游遍美国， We saw public

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This year, TV makers are doing their best to give huge-screen fanatics more breathing room. New ultrahigh-definition sets were shown off Monday by LG Electronics, Sharp, Sony and Samsung Electronics at the international CES gadget show in Las Vegas.

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One of the most impressive feats of muscular coordination in nature is the instance of a frog darting out its tongue in order to catch a fly. No matter how fast you are, you could never rely on plucking bugs out of the air to stay alive; but for frog