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YT&Twebzine
Apollo 13 kept nation on edge 45 years ago
Spacecraft to offer up-close view of Pluto
What were Lincoln's accomplishments?
Most teens go online daily, survey finds
Are we alone? Scientists seek answers
71: A gripping story of war's impact on children
Report: A dismal March clouds jobs picture
April Fools' Day: An ancient history
Quick Study: Who was Johannes Kepler?
Quick Study: How did the Secret Service start?
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