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Wetlands Could Save Cities--and Money, Too 湿地不仅能保护人类还能替人类省钱 As Houston begins recovery efforts from Hurricane Harvey, a new storm threatHurricane Irmais barreling west towards the Caribbean and Florida. We have few def
2017年Scientific American(九)月
World Wetlands Day (WWD) occurs on the 2nd of February each year. It marks the date of the signing of the International Convention on Wetlands in 1971 in Ramsar, Iran. WWD started in 1997. It aims to raise awareness of the value of wetlands around th
英语课程学习计划和讲义
World Wetlands Day (WWD) occurs on the 2nd of February each year. It marks the date of the signing of the International Convention on Wetlands in 1971 in Ramsar, Iran. WWD started in 1997. It aims to raise awareness of the value of wetlands around th
世界节假日博览
Broadcast: Apr 04, 2003 The war in Iraq is taking place around the Tigris and 2) Euphrates Rivers, what 3) archaeologists call the cradle of Western civilization. The historic rivers flow into the Mes
VOA2003（上）-科技先知
AS IT IS 2015-06-09 Conference Urges Protection of Wetlands Hundreds of millions of people around the world depend on wetlands for their livelihoods, such as fishing or farming. However, since 1900, experts say 64 percent of wetlands have disappeared
2015年VOA慢速英语(六)月
GWEN IFILL: Next: The coast of Louisiana is crumbling into the Gulf of Mexico at an alarming rate. Over the last 80 years, it's lost nearly 2,000 square miles. That's as big as all of Rhode Island. Now a political fight has broken out in the state le
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