August 26, 2009 3:31 pm 12-Year-Old Girl Sings Out Against Friend's Cancer An Ashburn, Va., girl’s fight with cancer is turning her into somewhat of an Internet star. Local 2:54 ‘Healthy moms equal healthy babies': Children's National offers maternal health care 2:14 Opioid crisis: National drug take back day on Saturday 2:55 Concussion treatment: Returning to school and limiting screen time may help, study finds 2:39 What to know about ADHD medication and pregnancy 2:08 How to pick the best running shoes for outdoor exercise