March 20, 2009 5:02 pm World's Smallest Heart Pump A medical breakthrough, North Texas doctors implanted the world’s smallest heart pump. Wake Up to Something Good 2:06 Advances in hearing aid technology 1:17 Momentous Institute offering free training to help navigate mental health crisis 0:40 Midlothian teen gets ‘NFL Draft' experience 2:11 New app helps dementia caregivers focus on their own health 2:19 Grandfather of seven shares how he survived a rare heart event