Julia Saluck is only in high school, but is already making a world of difference -- literally! Each year, Julia travels to a different developing country to build a classroom for the area children, who have no place to attend school. She raises every penny she needs to make this trip, and gives up her spring break to do sweat-inducing, back-breaking labor. But it's a labor of love! To find out more about this extraordinary teen, listen to my interview with Julia, who's truly a Changemaker!