To really stand a chance of killing everyone you need to contemplate much larger weapon designs - inevitably Edward Teller did just that with 1Gt and 10Gt desig

To really stand a chance of killing everyone you need to contemplate much larger weapon designs - inevitably Edward Teller did just that with 1Gt and 10Gt designs: http://blog.nuclearsecrecy.com/2012/09/12/in-search-of-a-bigger-boom/ http://blog.nuclearsecrecy.com/2012/09/12/in-search-of-a-big... NB That's not a typo, I did mean gigaton