Complex sentence: NOLS grew enormously during the 1970s due to the publicity gained by an appearance on NBC's Alcoa Hour in an episode entitled "30 Days to Survival" which followed a NOLS course through the Wind River Range.
Split into simpler sentences: NOLS grew enormously during the 1970s, due to the publicity gained by an appearance on NBC's "Alcoa Hour". The episode, titled "30 Days to Survival", followed a NOLS course through the Wind River Range.