Can they be destroyed? I coulndt find it in the rule book. I know their considered hindering terrain, but wanted to know if i could destroy em. If not can i move one wi TK? Thanks in advance.

No.

As far as I know the only way to effect them is with certain special powers.

The debris tokens can't be removed from the battlefield unless a character would have a power that allow them to be removed, or if the Damage Control BFC would be in play.

If the Debris markers are from destroyed Barrier tokens, they are removed from the game when the Barrier tokens would removed from the game.

From the Player's Guide:
Actually Damage Control does not remove debris tokens.

From the Player's Guide: