This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Batteries of the future need to deliver more energy, and they need to be smaller. Researchers at MIT think they have developed a technology that can, a

发表于:2019-01-08 / 阅读(78) / 评论(0) 分类 Scientific American(四)月

'Up All Night' Melds Country With Modern Rock Edge Up All Night, has brought the Georgia native praise from many music critics. Country Music Televisions website writer Chet Flippo said, I have to say I have not heard a more compelling and appealing

发表于:2019-01-13 / 阅读(32) / 评论(0) 分类 VOA标准英语2012年(五月)

First Solar Sail to be Launched into Orbit from Russian Submarine 俄潜艇首发太阳反射器进入轨道 A solar sail might do for space missions what fabric sails once did for sea travel.It would

发表于:2019-01-31 / 阅读(76) / 评论(0) 分类 VOA2005(下)--环境科学探索

American Millionaire space tourist Dennis Tito has unveiled plans to send a man and a woman around Mars in January 2018. The couple will embark on the 500-day journey which zooms past Mars and swings back to Earth as part of a historic Mission for Am

发表于:2019-02-14 / 阅读(96) / 评论(0) 分类 英闻天下