Video: WWII Ship’s Bell Recovered, Mission Led by Microsoft Cofounder00:30
Microsoft cofounder, Paul Allen, heads underwater mission, recovering the bell from sunken WWII British battleship – the HMS Hood.
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2004: Mars rover discovers evidence of water on Red Planet01:37
This powerful laser beam is helping track the moon02:56
China's experiment proves life is possible on the Moon01:21
Watch this huge floating ice disk found rotating in Maine river01:08
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