This is scientific american sixty seconds science.I'm Julie Rosen, got minute. Each fall, thousands cohort samen flock to northwest river to spone. but many never get the chance especially near bit city like Seatle.and some of these urban areas'90 pe

发表于:2018-12-24 / 阅读(20) / 评论(0) 分类 2015年Scientific American(十)月

Senegal has severed diplomatic relations with Iran, accusing it of supplying weapons to separatist rebels in the southern Casamance region where three Senegalese soldiers were killed in attacks over the weekend. The two countries' previously strong d

发表于:2019-01-14 / 阅读(43) / 评论(0) 分类 VOA标准英语2011年(二月)

As these robot submarines accomplish great missions, the possibility of one day melting our way into Europas deep ocean is moving from fiction toward fact. Lets just imagine, there were on a little spacecraft with the capability to melt to the ice, w

发表于:2019-01-22 / 阅读(20) / 评论(0) 分类 自然百科2012年

United States Defense Secretary Robert Gates says it appears Russian troops are withdrawing from key positions in the former Soviet republic of Georgia, nearly two months after a brief war ended between Russian and Georgian troops. He made the comme

发表于:2019-01-31 / 阅读(34) / 评论(0) 分类 VOA标准英语2008年(十月)

Want to step outside to take in the scenery or pick up some rocks? As familiar as it might look beyond the port hole, Mars is dangerously alien. The upside is the low gravity will give you super jumping abilities, the down, the almost complete lack o

发表于:2019-02-03 / 阅读(31) / 评论(0) 分类 自然百科2012年

We are rediscovering the enigmas(谜团) of the Moon and they're really in our own backyard Dr Jim Garvin, Nasa Goddard Space Flight Center Moon water has world in a twitter A surprising amount of water has been found to exist in the Moon's soil. Data

发表于:2019-02-18 / 阅读(44) / 评论(0) 分类 英语新闻