On a humid February afternoon last year, Jane Clayson Johnson trudged through the dense forest with her guide, Grace Ninsiima, a young mother from Masaka, a city in central Uganda. Johnson, who spent ...

Thirty-eight years ago, Bol Aweng and Jok Dau heard a sound that would change their lives forever. The two boys lived in Piol, a village in South Sudan. While feeding their families’ livestock one day ...