via   the comic delivery system monikered   Randall Munroe   resident at   XKCD  !

XKCD ‘ISS Vaccine’

via the comic delivery system monikered Randall Munroe resident at XKCD! Permalink ...
via   the comic delivery system monikered   Randall Munroe   resident at   XKCD  !

XKCD ‘Eradication’

via the comic delivery system monikered Randall Munroe resident at XKCD! Permalink ...
via   the comic delivery system monikered  Randall Munroe  resident at   XKCD  !

XKCD ‘First Thing’

via the comic delivery system monikered Randall Munroe resident at XKCD! Permalink ...