单词：Intelligent Antenna Arrays
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This is Scientific American's 60-Second Science. Im Cynthia Graber. This will just take a minute. One of the problems with large-scale solar power plants is that they require a huge amount of space. To rise above that problem Israeli researchers rece
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Brian didnt have cable TV. He didnt have satellite TV. He had an antenna for his TV. He had an indoor antenna. But it was an old antenna. The reception was bad. He needed to buy a new antenna. He went to Best Buy. The antennas were in boxes. He looke
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By David McAlary Washington 14 September 2006 The International Space Station has spread a new pair of golden wings. They are solar panels that will double the amount of power available to the outpost. Unfurling them took longer than expected becaus
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On my 89th birthday, I ask indulgence to depart from customary journalistic detachment (Our very senior News analyst, Daniel Schorr ) into the long running argument about creationism versus evolution. There has lately been added a new catch phrase, a
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Early warning systems can be the difference between life and death in earthquake-prone regions. But they are expensive. The US, Mexico and Japan have such systems. That leaves large swats of central and South America, Asia and the Caribbean unprotect
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Scientists Renew Effort Looking for Intelligent Alien Life 科学家们重新努力寻找外星智慧生命 After the 1982 megahit E.T. the Extraterrestrial, the search for alien intelligent life was much in focus. And although no evidence has yet be
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