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Recent Audio Podcasts
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Why Diamonds Really Are Forever
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Nothing will scratch or damage a diamond, while a diamond can scratch any other material on Earth. So what makes them so tough?
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A Brief History of the Early Earth
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What is our earth’s history? New research suggests that life on Earth has existed without interruption for longer than we thought.
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Why We Refrigerate Fruits and Vegetables
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Everyone knows you should put spinach and berries in the refrigerator, but how do cooler temperatures keep most fruits and vegetables from spoiling rapidly?
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Why A Boy’s Voice Changes
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For adolescent boys, a changing voice that cracks in the middle of a sentence can be embarrassing. But a cracking voice is a natural part of development.
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How To Make Paper In Your Own Kitchen
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Paper is an indispensable part of modern life. In fact, each American uses about 600 pounds of paper every year. Where does all this paper come from?
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Stem Cells That Help Leukemia Patients
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Can you name three types of stem cells in your body? Learn about the different kinds of stem cells in the body and how they can help treat leukemia.
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A Dandelion Is Born
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While annoying to most adults, dandelions are loved by children. But what makes these “flowers” so widespread?
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Healing Rate Of Elbows And Eyeballs
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Ever wonder why it takes so long for a scratch on the elbow to heal? After all, it takes just minutes for a scratch on the eyeball to heal.
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Key Factors That Determine Your Salary
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Do people that are better looking get a higher salary? Does it all depend on smarts? Psychologist agree that both brains and beauty are the key to big bucks.
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