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While one of the most pressing political and social issues facing the Arab world rarely makes headlines, it is an issue that some political analysts believe could lead to the next great confrontation in the region. Rapidly expanding Arab populations
2005年NPR美国国家公共电台
By Paul Sisco Washington, DC 20 September 2006 watch Deepwater Oil Super computers, mathematical formulas, and advances in imaging all played a part in a much-publicized recent oil discovery beneath the Gulf of Mexico. ----- Consider the idea of dri
2006年VOA标准英语（九月）
Whales, seals and walruses stay warm in chilly water because they have a thick layer of blubber. We humans rely on something like blubberneoprene rubber wet suitsto spend time in cold water. But the thick versions for really icy water are heavy and u
2016年Scientific American(十)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
自然百科2012年
WILLIAM BRANGHAM: For more on how fire officials are coping with these many fires, we turn to Ron Dunton. He's with the Bureau of Land Management. And he is helping coordinate fire response at the National Interagency Fire Center in Boise, Idaho. Ron
PBS访谈环境系列
Gone when you get stuck Sleeping when you wake up Lover on the other coast Off to the races Headed other places Chasing a familiar ghost No one said it would be this hard How could I know? Why do we always get so far Before we let go? And we separate
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