Thread:Dragonfly82/@comment-25112275-20140911143656/@comment-25112275-20140911150849

That’s the thing though. The Council on the Ark never knew if Earth was survivable. One character Abigail Griffin, speculates that the Earth COULD be livable again. So they send 100 Delinquents, who were to die anyway once their 18th birthday came, down to earth. The 100 were basically used as “lab rats” to see if they would survive Earth’s radiation.

While on the way down to Earth, the Delinquents loses their communications system. Making the 100 unable to contact the rest of the people in space. So the people in space (at the time) didn't know earth was survivable. The only contact they had with them were wristbands the 100 were wearing. Well something happens that makes the Ark think Earth is not survivable. I don't want to give any more away. XD