PHOENIX — Jace Taylor is a rambunctious 4-year-old boy. He runs, jumps and plays with his friends. He isn’t aware that genetically, he’s different from other children. “I think he’s too young to ...

You take a deep breath and you walk through the doors, it's the morning of your very first day. And for Leah Messer's 15-year ...

Muscles make up nearly 40% of the human body and power every move we make, from a child's first steps to recovery after injury. For some, however, muscle development goes awry, leading to weakness, ...