Is Man vs Wild ethical in its production methods?

Recently, I have been really hooked on the reality series on “Man vs Wild” on Discovery Channel, that features the host, Bear Grylls, going round the world’s most dangerous places and teaching the audience survival skills. It is pretty fascinating to me, at least i get to “visit” these places in the comfort of my couch. However, there was a series of accusations that the show is a fraud, and that ...