Activity: What Is The Time Traveler’s Paradox (aka the Grandfather Paradox)?
C.A. Gray is the author of the YA Fantasy PIERCING THE VEIL trilogy, as well as the NA Dystopian series, THE LIBERTY BOX. By day, she is a Naturopathic Medical Doctor (NMD), with a primary care practice in Tucson, Arizona. Additionally, she writes medical books under her real name. She is blessed with exceptionally supportive family and friends, and thanks God for them every single day! Read More »