Stargate Atlantis Season 1 Episode 6: Childhood’s End



The team visits M7G-677, a primitive world where no one is over 24 years old, because of ritual suicides they believe keep the Wraith at bay. McKay discovers that they are in fact being protected by an Ancient electromagnetic shield. He takes the ZPM powering it, unwittingly allowing a long-dormant Wraith transmitter to reactivate.