Colorado May 7, 2024 5:56 pm Watch: Police dog tracks and finds missing 85-year-old woman in Colorado A missing 85-year-old woman is now safe after a police dog tracked her down with the help of a police officer in Colorado on Saturday. US & World Videos 2:36 From our tables to our medicine cabinets, we literally owe trillions to coral reefs 1:07 How long will your fridge keep food safe during a power outage? 1:21 Watch the trailer for NBC's My New Favorite Olympian 3:53 A gas station meeting with Bill Walton changed this paralyzed young man's life forever 1:46 Heat waves getting hotter, longer, and more frequent because of climate change