2 Ergebnisse für: 1.132.131
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WTC 7 Free Fall Collapse - YouTube
http://www.youtube.com/watch?v=Ml_n5gJgQ_U&NR=1
WTC 7 Falls in under 7 seconds. The rate of free fall for the 47 story building is 6.8 seconds.
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President Obama's COSMOS Introduction | Cosmos: A Spacetime Odyssey - YouTube
https://www.youtube.com/watch?v=qcdYYISYh0I
Introducing the series premiere of the new COSMOS, President Obama invites a new generation of explorers to make the next great discovery. ➡ Subscribe: http:...