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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. If you spent any time in your car this summer you probably sat in some traffic. Maybe youre in a jam right now. If so, a study in an upcoming issue of Ph
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Suspension bridges such as the Golden Gate Bridge and the Brooklyn Bridge are some of the most amazing structures on earth. These aesthetic and technological wonders span rivers, and other obstacles with enough strength to support endless streams of
今天我们要学的词是collapse。 Collapse, 坍塌。 The main building of the factory collapsed because of the fire, 大火造成工厂主楼的坍塌。 Nearly a foot and a half of snow fell in Minneapolis last Saturday, causing the roof of Vi
今天我们要学的词是collapse。 Collapse, 坍塌。 The main building of the factory collapsed because of the fire, 大火造成工厂主楼的坍塌。 Nearly a foot and a half of snow fell in Minneapolis last Saturday, causing the roof of Vi