Human Extinction

source: Vsauce     2015年3月7日
Some ideas about our end.
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related Vsauce videos:
What Will We Miss? https://www.youtube.com/watch?v=7uiv6...
Cruel Bombs: https://www.youtube.com/watch?v=SHZAa...
Risk: https://www.youtube.com/watch?v=w-CK8...
Will We Ever Visit Other Stars? https://www.youtube.com/watch?v=lD08C...
last words: https://www.youtube.com/watch?v=Qig68...