Don: Time to go again to the A Moment of Science mailbag. Yal: A listener writes: Dear A Moment of Science, Scientists know that one day we'll run out of oil and other natural sources of energy. Beyond solar power and wind power and ethanol, what are

发表于:2018-12-27 / 阅读(53) / 评论(0) 分类 英语时差8,16

World Tai Chi and Qigong Day is an annual event held on the last Saturday of April each year. Its aim is to promote practices of Tai Chi and Qigong. In particular, followers of Tai Chi and Qigong hope to educate the world about the health benefits of

发表于:2018-12-29 / 阅读(43) / 评论(0) 分类 英语课程学习计划和讲义

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This'll just take a minute. It sounds like something out of a bad science fiction novel. During World War II, a fungus called Tricoderma reesei ate its way through US military unifo

发表于:2019-01-08 / 阅读(62) / 评论(0) 分类 Scientific American(五)月

Scientists in Brazil are turning fruit fibers into car parts. At a recent meeting of the American Chemical Society, the researchers described their work in making the next generation of automotive parts made from natural fibers from bananas, pineappl

发表于:2019-01-09 / 阅读(63) / 评论(0) 分类 VOA标准英语2011年(四月)

Turning Cigarette Butts to Batteries 烟头转变成电池 If you see a person carelessly throw a cigarette to the ground, what are you likely to think? That depends. If you hate people throwing things on the ground, you might think, That person shou

发表于:2019-01-12 / 阅读(72) / 评论(0) 分类 2014年VOA慢速英语(九)月

I have time to join the IGO and be an ambassador to help new incoming international students get use to the environment here at Georgetown University and Washington, DC. Shu Tao is a second-year PhD student in the Department of Biology specializing i

发表于:2019-01-13 / 阅读(50) / 评论(0) 分类 VOA标准英语2010年(八)月