Warner Bros. has picked up the screen rights to all twenty-two novels in Anne McCaffrey's sprawling fantasy novel series "Dragonriders of Pern". First published in 1968, the stories center on a group of warriors and their telepathic dragons who try to save their home planet of Pern from a deadly airborne threat, a rain of spores that hails from the orbit of the Red Star. No screenwriter is currently attached to adapt the work at this time, David Hayter penned a draft for an earlier incarnation back in 2011 in development at Copperhead Entertainment, Dark Hero Studios and Angry Films. Source: Deadline