LOWELL - Jarronai Yary admits that on a lazy summer day, "I'd definitely be on phone. I'm always on my phone."Instead, the 13-year-old and 120 fellow campers are spending the day playing, learning and growing. "We want to give them something they can do this summer that will keep them active and make sure they're learning at the same time," said Larry Devon Wilson, Lowell Youth Leadership Program president. The inaugural Lowell Youth Leadership Program, for ages 10-16, is inspired by the former National Youth Sports Program that helped people like Andres Lopez when he was growing up."I think it gave us...