Ashley Medlock (left) and her sister Lauren play with light and mirrors in the Sensing Nature exhibit at the Fernbank Museum of Natural History in Atlanta on Saturday, December 27, 2014.
December 27, 2014 Atlanta – Ashley Medlock (left) and her sister Lauren play with light and mirrors in the Sensing Nature exhibit at the Fernbank Museum of Natural History in Atlanta on Saturday, December 27, 2014. JONATHAN PHILLIPS / SPECIAL