单词：global change
单词：global change 相关文章
By Mike O'Sullivan 27 July 2007 United Nations Secretary-General Ban Ki-moon is on a two-day visit to California to discuss climate change and other global challenges. Mike O'Sullivan reports from San Francisco, the secretary-general says the United
2007年VOA标准英语（七月）
Global Warming and Ozone 全球变暖和臭氧 Could the coming century bring a new threat to the ozone layer? Discover one scientist's model of the effect of global warming and greenhouse gases on ozone -- on today's Earth and Sky. DB: This is Earth and S
(科普英语)Earth and Sky
By Brian Byrnes More than 6,000 delegates from 194 nations have gathered in the Argentine capital of Buenos Aires for the 10th annual United Nations Convention on Climate Change. Monday's opening cere
VOA2004（下）--健康科技
By Scott Stearns White House 28 September 2007 President Bush says the challenges of global climate change are best addressed by each nation making its own choices about reducing emissions. VOA White House correspondent Scott Stearns reports, that is
2007年VOA标准英语（九月）
Aid agencies warn that East Timor faces a food crisis and more than half of its youngest children are going hungry as global food prices soar. A new survey reveals that more than 70 percent of households across East Timor are unable to find enough t
VOA标准英语2008年（十月）
By Kurt Achin Jeju, South Korea 14 September 2007 Global warming is often in the news these days, usually in connection with changing, and sometimes destructive, weather patterns. But the World Health Organization says rising temperatures also have a
2007年VOA标准英语（九月）