[hide]I think that Hiro was right to trapped adam in a coffin as Hiro knows what adam is like and since he hasn't seen it when Peter and Claire almost died, he might think Adam can't die. The regenerating must be to do with the head as at the start of season 1 when claire has thta branch in her head and come back when it is pulled out, and the glass shard in peters head near the end of season 1. It would make sense that if the brain dosen't work, the powers don't work since when Sylar steals the brains he gains the powers. Also Im happy that Sylar gained his powers back, since he originally wasn't going to get them bakc yet because he is playing Spock in the new Star Trek film, but with the Strike he can do all tht before returning to heroes.[/hide]