Video: WWII Ship’s Bell Recovered, Mission Led by Microsoft Cofounder
00:30Microsoft cofounder, Paul Allen, heads underwater mission, recovering the bell from sunken WWII British battleship – the HMS Hood.
What happens in your brain when you’re falling in love
01:542004: Mars rover discovers evidence of water on Red Planet
01:37This powerful laser beam is helping track the moon
02:56China's experiment proves life is possible on the Moon
01:21Watch this huge floating ice disk found rotating in Maine river
01:08This is how solar panels work
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