单词：nereistoxin insecticides
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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As long as there have been mice, people have sought a better mousetrap. And since we figured out that bacteria can make us sick, weve searched for better
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University of Maryland scientists are working on a genetically-engineered fungus that would kill the malaria parasite. The battle against malaria continues to challenge doctors, scientists, and public health officials. Now, a team of British and Amer
VOA标准英语2011年(三月)
Rising Crop Prices Linked to Decline in World's Bee Population Terrence Ingram considers himself a naturalist. He said hes best able to commune with the natural world around him at the center of a swarm... of bees. I love beekeeping. Its one of Gods
VOA标准英语2013年(六月)
Pesticides Contribute to Decline in World's Bee Population Terrence Ingram considers himself a naturalist. He said hes best able to commune with the natural world around him at the center of a swarm... of bees. I love beekeeping. Its one of Gods grea
VOA标准英语2013年(六月)
AGRICULTURE REPORT - Study Says Genetically Engineered Rice Cuts Use of Insecticides By Mario Ritter Broadcast: Tuesday, May 10, 2005 I'm Gwen Outen with the VOA Special English Agriculture Report. A
农业与发展
The dengue virus is spread through the bite of an infected female Aedes egypti mosquito. The disease causes flu-like symptoms, including high fever, muscle aches and sometimes death. Each year, the disease strikes between 50 and 100 million people li
VOA标准英语2010年(三月)