There's a lesson here about burning bridges... or vaporizing your enemies.
One word. Crap.
I know of only one thing that may cure cancer, unfortunatly I already killed the dinosaurs.
I wonder if they can cobble together yet another body for Duo out of some metal scraps and gum...
Well Duo's not exactly still dead anymore... for the time being. >_<
What we need to rebuild Duo is one scroll of summon McGievver