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4/6/2009
Where Does The Word "Clock" Come From?
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4/5/2009
What Are The Advantages Of Big Dams?
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4/1/2009
Who Invented Smoothies?
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3/30/2009
Who Invented Tobacco?
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3/27/2009
What Country Was The Compass Invented?
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3/26/2009
When Was Fathers Day Invented?
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3/22/2009
What Did The Chinese Invent?
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3/20/2009
Who Invented The First Side View Mirror?
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3/20/2009
When Did Dr Patricia E Bath Invent Her...?
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3/19/2009
What Are Some Roman Inventions?
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3/19/2009
Who Invented Heroin?
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3/18/2009
What Are The Differences Between A Light And Electron Microscope?
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3/15/2009
What Items Are Made Out Of Thermoplastic?
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3/11/2009
Did The Light Bulb Have A Significant Impact?
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3/11/2009
When Was The Vacuum Invented?
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3/10/2009
Who Invented The Smart Board And When?
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3/8/2009
When Was The Electric Kettle Invented?
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3/4/2009
How Does A Simple Machine Make Work Easier?
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3/3/2009
Who Invented Solar Power?
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3/2/2009
How Did The Invention Of Paper Change Lives?
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