On Saturday, NewsHour Weekend examines the growing concern over head injuries in youth soccer. Correspondent William Brangham, whose three kids all play the sport, explores its potential dangers, particularly those caused by heading the ball, amid a fledgling movement led by a prominent neurosurgeon and World Cup champion Brandi Chastain who advocate taking headers out of youth soccer. Brangham explores whether the benefits of a sport loved by so many outweigh the risks, a dilemma facing millions of parents across the country. That, and the weekend's news, online and on-air.