March 7, 2013 8:48 am App Studies User's Cognitive Response After Playing Contact Sports Doctors hope a new app will help prevent brain injury in athletes, specifically in girls who play soccer and use their heads to pass the ball. Rachel McNeill reports. US & World Videos 5:49 Kelly Clarkson hilariously attempts handmade pasta with chef Evan Funke 1:59 Ellen DeGeneres jokes about being ‘kicked out of show business' 2:03 Does Shakira still believe in love following Gerard Piqué split? 1:36 O.J. Simpson's cause of death revealed 0:59 Paramedic involved in Elijah McClain's death sentenced to 4 years of probation
