User blog comment:Thailog/New trailer for Season 2/@comment-4584676-20120422015641/@comment-68.193.161.106-20120422190932

What if that bomb that exploded in the trailer was the Light's way to speed up human evolution. So everyone seems older because they could have been affected by it. That also explains why suddenly most of the teenagers, who were normal in season 1, have powers in season 2.