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This is East Africa, the Great Rift Valley, a land in constant upheaval. The flamingos and baboons here at Lake Bogoria live in harmony. They share this landscape and all it has to offer. They may not be compatible. But in the midst of Bogoria's bou
国家地理2008年
By Cathy Majtenyi Nairobi 05 January 2007 watch Kenya Climate report The U.N. Climate Change Conference, held recently in Nairobi, Kenya, renewed the world's attention to what is commonly known as global warming, which most scientists say is caused
2007年VOA标准英语（一月）
This is the VOA Special English Development Report. Rift Valley fever mainly affects farm animals. But the virus can also infect humans, and South Africa has been experiencing an outbreak. The National Institute for Communicable Diseases reported two
2010年VOA慢速英语(七)月
By Cathy Majtenyi Nairobi 26 January 2007 Health authorities in Kenya say an outbreak of Rift Valley Fever that began last month appears to be tapering off. The outbreak has killed more than 100 people. Cathy Majtenyi reports for VOA from Nairobi. A
2007年VOA标准英语（一月）
This is East Africa, the Great Rift Valley, a land in constant upheaval. The flamingos and baboons here at Lake Bogoria live in harmony. They share this landscape and all it has to offer. They may not be compatible. But in the midst of Bogoria's boun
自然百科2008年
By Derek Kilner Nairobi 23 November 2007 The Food and Agriculture Organization has cautioned that an outbreak of Rift Valley Fever in Sudan could spread rapidly in coming weeks due to the widespread movement of livestock in preparation for the Muslim
VOA常速英语2007年（十一月）