标签:sahara 相关文章
This is Scientific Americana 60 Seconds Science, I'm Christopher Intagliata, got a minute.The Sahara desert isn't known for its greenery, but there's evidence it was once much lusher than today, dotted with waterfall and lakes, now a study suggests t
The city of Tenness was consumed by the desert in the sandstorm of the last of the holy year. Wiped clean by ? Indiana Jones' friend, ?, explaining the fictional fate of the City of Tenness in Raiders of the lost Ark. Back in real life scientists hav
VI. Furthering Listening and Speaking Task 1: Dust Storms American researchers say dust clouds from dry African deserts may be a threat to human health in the United States. The dust may contain many small organisms that could be dangerous. Each year
By Chris Simkins Washington, D.C. 29 March 2006 watch Training report The U.S. Defense Department continues an ambitious military counter-terrorism program in nine nations across poor and largely Musl
Climate Change Blamed for Dying African Trees A lot of trees are dying in Africas Sahel region and new study says climate change caused by humans is to blame. Whats more, many tree species are also disappearing. The study appears in the Journal of Ar
Africa's Sahara Desert, as seen from the International Space Station's new seven-windowed cupola Crew members of the U.S. space shuttle Endeavour opened the shutters on the International Space Station's new observation deck Wednesday, revealing a spe
For some Africans, southern Sudan's expected independence is a cautionary tale; others see it as a pathway for their regions to gain full sovereignty. According to Bloomberg News, Somaliland's foreign minister, Mohamed Omar, says his government plans
society, that first brought civilization to the desert. Far from just scraping by in this harsh landscape, the Garamantes were flourishing. They grew crops, such as cereals and grapes. They kept horses and pigs. Clearly, they needed large amounts of
So the rigid hierarchical structure of Egyptian society wasn't just dictated by the Pharaohs. It also emerged because the Egyptians had only one water source - the Nile. 5,000 years ago, it wasn't just the ancient Egyptians who noticed the value of r
It takes about two months to cross the Sahara Desert by camel from top to bottom, 骑骆驼从撒哈拉沙漠北边到南边,大约需要两个月的时间。 and there is no other way to go than by camel or airplaneno railroads, no auto roads, no
By Phuong Tran Northern Niger 27 February 2008 For centuries, routes through the Sahara Desert have been used to transport goods. In recent years,4x4 convoys of cocaine and hashish have joined caravans bearing salt, cigarettes and fuel. VOA reporter
By Jordan Davis Dakar 07 February 2007 Defense chiefs of the United States and nine African countries are wrapping up a two-day meeting in Dakar, Senegal on increasing military cooperation around the Sahara. As the conference was taking place in Sen