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Long ago, before BandAids, or even medicine of any kind, our ancestors evolved to heal cuts themselves. If you got sliced open, the body blocked it up, to prevent blood loss, water loss, infection. But as we gained that powerwe sacrificed something e
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Broadcast: May 6, 2003 By Caty Weaver VOICE ONE: I'm Sarah Long with Bob Doughty, and this is the VOA Special English program, SCIENCE IN THE NEWS. VOICE TWO: Today, we talk about some disorders of th
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VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Barbara Klein. VOICE TWO: And I'm Bob Doughty. Today, we will tell about some disorders of the skin, and ways to treat them. (MUSIC) VOICE ONE: Skin. It is the largest organ of the b
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The hypothalamus, the master controller of your hormones, releases something called corticotropin-releasing hormone. 下视丘是控制荷尔蒙的主宰，它会释放一种叫促肾上腺皮质释放素的物质。 This triggers the pituitary gland
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We all try to strike that balance between aging gracefully -- and not looking as though we're older than we really are. With age, your skin thins and grows less elastic. As a result, wrinkles, age spots and skin tags become more common. Generally spe
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What's sweat? 什么是汗水？ Your body works best when its temperature is about 37? Celsius. When your body gets hotter than that, your brain doesn't like it it wants your body to stay cool. So the part of your brain that controls temperature, ca
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