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AS IT IS 2013-11-01 Scientists Say Air Pollution Threatens Honeybees 科学家说空气污染威胁着蜜蜂 From VOA Learning English this is As It Is. Welcome back. Im Caty Weaver. Today, we go to a school near Washington where meals are being serv
2013年VOA慢速英语(十一)月
Anil Gupta 在发展中国家内寻觅着那些不知名的发明家们--那些本地的被贫困所掩盖的天才企业家，他们的能力可以改变很多人的生活。他展示了小蜜蜂网络（Honeybee Network）是怎么帮助这些人去建
TED公开课:地球村
Orchids are botany's great mimics, all in the service of getting pollinated. Some have evolved to resemble female wasps to attract males. Others produce odors that smell like potential mates or like more attractive flowers. Now a study published in t
Scientific American(八)月
AS IT IS 2015-09-22 Saving the Honeybees, One Hive at a Time American Billy Davis has been keeping bees since the 1960s. He has followed the sharp drop in the number of honeybees across the country. Two years ago, he set up a non-profit group called
2015年VOA慢速英语(九)月
Over the last year, beekeepers in the U.S. lost nearly half their honeybee hives. And there are a lot of suspected culprits for this so-called beepocalypsefrom parasitic mites, to viruses, to simple land use changes. But a study out earlier this year
2016年Scientific American(八)月
模仿文本： I'm Adam Hart, and this is Discovery, On the Trail of the American Honeybee. Bee-keeping in the United States takes place on an industrial scale. Nowhere more so than in California Central Valley which, as I discovered last year, is h
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