ADHD a biological condition, not just behavioral, new research shows01:32
Researchers compared brain scans of 90 young children and found that those with ADHD symptoms also had smaller brain volume, especially in the frontal lobe -- the area that controls motor function, attention and decision making.
School district police officer hit and run caught on camera01:03
Dan Crenshaw lends helping hand to Pete Davidson01:13
Nest camera hacker threatens to kidnap baby, scares parents01:16
Gas prices plummeting ahead of holiday travel01:00
Service dog receives college diploma alongside owner01:18
Penny Marshall, famed actress and comedian, dead at 7501:52