R. Star wrote:
As for the radiation of the colony I was under the impression the meteor just irradiated the general area. Granted it's been awhile since I watched the episode, but I don't recall them saying the whole continent had been poisoned.
Didn't have to be. The radiation immediately after the impact could've been enough to cause acute radiation syndrome within hours, maybe a day or so. How far can you walk in a day? Maybe 30 miles or so? Less if you're getting sicker from radiation the longer you walk. So it wouldn't have needed to affect a huge area -- just a few dozen miles across.