U.S. & World 0:00Play0:00 / 1:42MuteShareToggle FullscreenAugust 6, 2009 5:02 pmAmerican Kids Are Vitamin D Deficient A study indicates that seven of ten American children lack the proper amount of Vitamin D. BOOKMARKERMore Health VideosSlide 1 of 61:41Now PlayingAmerican Kids Are Vitamin D Deficient0:28‘There was a collision': Air traffic control recording captures moment of crash3:30Witness describes seeing plane in moments before it crashed0:38Video shows moment plane and helicopter collided near DCA0:37Ex-Abercrombie CEO arrested on sex trafficking-related charges9:07Selena Gomez and Benny Blanco's sweetest momentsNewsLive TVSearchSearch Videos:LocalUS & World VideosEntertainment VideosChicago TodayInvestigationsNBC 5 RespondsLatest2:23CHICAGO FORECAST: Strong storms, dangerous winds approach region1:50What a wine tariff could mean for Chicago businesses2:07Chicago pastors to give away 40K eggs to families in need4:51‘Heartbreaking': Rideshare drivers say they were suddenly deactivated, left jobless1:31Metra trains halted near Lake Forest after freight train strikes pedestrian2:26Friday afternoon forecast4:48NBC's Mike Berman teaches Cortney and Matt about March Madness0:59Deals on pizza and pie to celebrate Pi Day in Chicago area1:00A total lunar eclipse unfolded last night, casting the moon with a red glow2:26Chicago's Forecast: Windy with near-record warmth today, strong storms tonight3:50Friday morning forecast0:51Mystery $6,000 deposits showing up in SSA beneficiaries' bank accounts. Here's whyShow More