I'm a big fan of this too, I think I had about 14 episodes on my DVR at the moment, it's set to record every episode! I think it's a non-sensationalist, thoughtful piece of TV that doesn't dumb things down too much, nor go too far the other way. The attention to detail is very nearly spot on in almost every case.

I don't see any issue watching this shortly before you fly. Do people avoid watching programs about car crashes shortly before driving?