Extras
A long lost ancient cemetery opens the door to a unique period in Egyptian history.
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E4
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0:30
Our skies are full of objects, natural and manmade, that are not as strange as you might think.
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E1
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2:17
Getting the right bag to the right plane requires an ingenious system. Here’s how it works.
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E2
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2:34
Area 51’s UFO myths became a cover for secret testing of cutting-edge military technology.
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E1
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2:35
What does the government know about UFOs? Experts weigh in on the need to identify these objects.
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E1
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1:03
Here are three moves in breaking, the newest Olympic sport, that appear to defy the laws of physics.
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S51
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1:19
Can scientists identify the man buried inside a mysterious coffin found under Notre Dame?
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E18
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3:00
Fossils reveal how birds survived the killer asteroid and became today’s only living dinosaurs.
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E3
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0:29
Follow the race to build a world-class airport on the site of one of America’s busiest flying hubs.
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E2
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0:30
Can science reveal the secrets of mysterious objects seen in our skies?
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E1
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0:30