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Turmfalke im Rüttelflug - YouTube
http://www.youtube.com/watch?v=TrucSkv-nDg
beeindruckende Flugtechnik
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Neil deGrasse Tyson: Atheist or Agnostic? - YouTube
https://www.youtube.com/watch?v=CzSMC5rWvos
Don't miss new Big Think videos! Subscribe by clicking here: http://goo.gl/CPTsV5 Astrophysicist Neil deGrasse Tyson claims the title "scientist" above all o...