January 10, 2019 6:43 pm Human Bacteria Research at UCSD Lends Insight Into Mental Health, Nutrition, Cancer NBC 7’s Danielle Radin shows you researchers just beginning to scratch the surface of a new frontier in science and wellness. US & World Videos 2:45 La Jolla Concours d'Elegance classic race cars 1:39 Troops Endure Hyper-Realistic Training 2:07 New study links consuming red meat with dementia 2:05 Police find, return dozens of abandoned Amazon packages 0:28 A Vermont state trooper plunges into icy pond to rescue 8-year-old girl