Sarah Knox, the STEM (Science, Technology, Engineering and Mathematics) Librarian for the North Central Regional Library system, performs experiments for children at the Grand Coulee Library on July 12. Knox performed several experiments, including some with water that seemed to defy the laws of gravity and physics. Here, water in the overturned jar does not fall out, held in only by a mesh. "It's not magic, it's science," Knox said. - Jacob Wagner photo