共查询到20条相似文献，搜索用时 0 毫秒
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Balter M 《Science (New York, N.Y.)》2001,294(5550):2278-2281
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Lawler A 《Science (New York, N.Y.)》2007,317(5842):1164-1165
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It is suggested that the originally European species Littorina littorea was introduced to North Ameriea by Norse settlers about A.D. 1000. Its subfossil distribution might be used in tracing the extent of Norse travel in this region. Recent archeological finds match very well with the historical records of the Norse exploration and settlements. This activity seems to have been concentrated in Nova Scotia and Newfoundland. 相似文献
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Pennisi E 《Science (New York, N.Y.)》2011,334(6059):1050-1051
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Lawler A 《Science (New York, N.Y.)》2004,306(5704):2026-2029
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Lawler A 《Science (New York, N.Y.)》2007,317(5838):588-589
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Malakoff D 《Science (New York, N.Y.)》2000,289(5483):1274-1276
From the president on down, many are hailing science as the fuel for today's booming economy, and bigger research budgets are seen as essential to continued prosperity. But skeptics say the information technology revolution is overrated as a contributor to economic growth when compared to the truly society-shaking innovations of the past, such as electricity or the telephone. Even some science lobbyists worry that hitching basic research's star too closely to economic arguments could backfire, prompting legislators to take a firmer hand in guiding cash toward less risky projects that they believe will pay off big. 相似文献
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Enserink M 《Science (New York, N.Y.)》2008,321(5889):627
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