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Captain Cook Arrow LegendIt was a great legend while it lasted, but DNA testing has ____1_____ ended a two-century-old story of the Hawiian arrow 箭头ca...

One Good Reason to Let Smallpox LiveIt’s now affair bet that we will never see the total extinction of the smallpox virus. The idea was to cap the glo...

Animal’s “Sixth Sense”A tsunami was triggered by an earthquake in the Indian Ocean in December, 2004. It killed tens of thousands of people in Asia an...

Singing Alarms Could Save the BlindIf you cannot see, you may not be able to1 find your way out of a burning building—and that could be fatal. A compa...

Car Thieves Could Be Stopped Remotely遥远地Speeding off超速行驶 in a stolen car, the thief thinks he has got a great catch2. But he is in a nasty3 surprise. ...

An Intelligent CarDriving needs sharp eyes, keen ears, quick brain, and coordination between hands and the brain. Many human drivers have all ____1___...

A Biological ClockEvery living thing has what scientists call a biological clock that controls behavior. The biological clock tells _____1___ when to ...

Wonder WebsSpider webs are more than homes, and they are ingenious traps. And the world’s best web spinner may be the Goldern Orb Weaver spider. The f...

Less Is MoreIt sounds all wrong—drilling holes in a piece of wood to make it more resistant to knocks. But it works because the energy from the blow g...

China to Help Europe Develop GPS1 RivalChina is to contribute to a new global satellite navigation system being developed by European nations. The Gal...