On a restricted site in northern Wisconsin, the hissing you hear is helping scientists see the future. Inside towering rings of pipes, aspen, birch, and sugar maples feed on measured diets of greenhouse gases. Our studies were looking at what forest

发表于:2018-12-30 / 阅读(96) / 评论(0) 分类 国家地理2007年

Rich cities around the world are largely responsible for greenhouse gas emissions, says a new study. The study measures emissions based on the use of goods and services, such as food, clothing and electronics, by people living inside cities. It inclu

发表于:2019-01-03 / 阅读(52) / 评论(0) 分类 2018年VOA慢速英语(三)月

DEVELOPMENT REPORT – March 18, 2002: Pot-in-Pot Cooling Device By Jill Moss This is the VOA Special English Development Report. In many developing countries, it is difficult to keep food cool. Most

发表于:2019-01-06 / 阅读(66) / 评论(0) 分类 农业与发展

Scientists Develop New Ways to Track Greenhouse Gases With more than 18 million people living, working and driving in Los Angeles, the city often is covered in a hazy layer of smog. Stan Sander, senior research scientist at the U.S. space agency's Je

发表于:2019-01-14 / 阅读(45) / 评论(0) 分类 VOA标准英语2013年(七月)

By Phil Mercer Sydney 02 April 2008 Australia's first large underground carbon storage facility has opened in the southern state of Victoria. The geo-sequestration plant will capture carbon dioxide from a power station and store it two kilometers ben

发表于:2019-02-05 / 阅读(44) / 评论(0) 分类 VOA常速英语2008年(四月)

Topics: Hip Hop Culture; The New York Stock Exchange; effectiveness versus efficiency; jilted; hence versus thus Words: hip hop DJ to rap graffiti breakdancing / breaking oppressive stock exchange stock trading floor NYSE Composite Index base value p

发表于:2019-03-05 / 阅读(188) / 评论(0) 分类 美语听力 English Cafe