Investigate the spooky side of science - bats, pumpkins, spiders, candy concoctions and more! Venture through our darkened exhibit halls to find Halloween tricks and treats, then sleep amongst the dinosaurs. Costumes are encouraged for this kids-only sleepover party! Grades 2-6, $60 members, $70 non-members with a $15 discount for siblings. Register online http://www.pacsci.org/sleepover/">now!