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STEVE INSKEEP, HOST: Some new parents have started giving their newborns what's being called a bacterial baptism. The idea is to try to help their babies develop healthy microbiomes, the collection of friendly bacteria that inhabit everyone's bodies.
2018年NPR美国国家公共电台10月
This is Scientific Americans 60-second Science. I'm Adam Hinterthuer. Got a minute? The Komodo dragon is the largest living lizard and a fearsome predator. It has long been thought that some of its hunting prowess was due to a mouth teeming with bact
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Theres definitely methane on Marsand there are seasonal variations of how much is being released into the thin Martian atmosphere. Which means that Mar
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Mosquitoes carry nasty diseasesdengue fever, west nile, malaria. But the microbes that cause those diseases dont attach themselves to the mosquitoes an
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Afghanistan Continues to Be Hub of Poppy Cultivation 阿富汗仍是罂粟的重要产地 A recent U.S. government report notes that more Afghan land is under poppy cultivation today than it was under the Taliban in 2002. Demand for drugs, especially
VOA标准英语2014年(二月)
By Jeff Swicord Washington, DC 02 August 2006 watch Afghanistan Drug report The North Atlantic Treaty Organization has taken over command of international troops in southern Afghanistan from the U.S.-led coalition. It will now lead the fight against
2006年VOA标准英语（八月）