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This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Saliva contains many useful components: lubricants, enzymes for breaking down food and now compounds that can reveal a persons age. Thats according to a

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Ever get a sour stomach after your morning coffee? Well, you might end up switching to a dark roastbecause that coffee concoction may leave you with a happier tummy. That's according to the research presented at the American Chemical Society meeting

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农业与发展

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By Caty Weaver Broadcast: September 12, 2003 This is Bob Doughty with the VOA Special English Environment Report. Scientists in the United States have reported some good news about the 1)ozone in the

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VOA2003（下）-环境与健康

经济学人69:外因遗传与压力新生儿蓝调曲

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经济学人科技系列

Omega Pharma-Quick Step grabs world team title

Omega Pharma-Quick Step grabs world team title THE HAGUE, Sept. 16 (Xinhua) -- Belgian cycling team Omega Pharma-Quick Step rode to victory in the men's team time trial at the road World Championships in Limburg, the Netherlands on Sunday. The team,

发表于:2019-02-06 / 阅读(62) / 评论(0)

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