SSS 2011-06-22

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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421 、 多刃切削刀具 multi-pointcutter 422 、 多孔塑料；泡沫塑料；海绵状塑料 foamplastics 423 、 多方榫接合 pinnedjoint 424 、 多媒体 multi-media 425 、 多晶性 poly

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Dieting isnt always easy, particularly if you have a sweet tooth. But by adding strawberries to your diet, you can enjoy a range of guilt-free dishes, drinks and snacks any time of day. Best of all, strawberries are low in calories, high in fiber, fa

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A healthy liver plays a key role in relieving digestive issues, such as a sluggish metabolism, gas, bloating, and constipation. It regulates blood sugar levels, which, when out of balance, can cause sugar cravings, fatigue, and fuzzy thinking. 健康的

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The proposal to have physicians practicing at multiple sites in China was conceived in 2009. It's regarded as a progressive move to meet the growing demand for medical treatment in rural areas. But while the idea might be sound in theory, it's expect

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Science and technology. 科技。 Medical implants. 医用植入设备。 A sweet idea. 一个甜美的想法。 Researchers are trying to harness glucose-the body's own fuel-to power implantable gadgets such as pacemakers. 研究人员正试图利用葡

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The proposal to have physicians practicing at multiple sites in China was conceived in 2009. It's regarded as a progressive move to meet the growing demand for medical treatment in rural areas. But while the idea might be sound in theory, it's expect