[font=trebuchet ms]Ah, the things we get into here...
Yeah, cockroaches apparently have a very high resistance to radiation poisoning.
Air-burst neutron bombs release deadly radiation and EMP that kill anything within a line-of sight range of the explosion. The physical blast is limited to a much smaller area, leaving cities standing relatively intact while all of the occupants die horribly. I don't ever want to meet the sick **** that came up with that concept.[/font]