A very interesting talk (as most of Tyson's are). I will try to find the full version later and I'll share it if I do:
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Edit: I believe I found the full version. Haven't watched it yet, but will soon-
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The man who inspired so many and forever holds his place as an American hero has passed away. May he rest in peace.
http://www.reuters.com/article/2012/08/25/us-usa-neilarmstrong-idUSBRE87O0B020120825