Commentary: Yoga and meditation can make schools less violent

My brother was born on the day of the Columbine shooting. While my family celebrated the arrival of a brand new baby boy, families in Colorado and all across the nation mourned the loss of 12 students and a teacher. When my parents heard about the shooting, questions that plagued the nation settled into their minds: How could something like this happen? What would it mean for their children? Would it happen again?Columbine marked the beginning of what former Rep. Gabby Giffords has called &ldquo