July 1, 2022 2:44 pm Meet Mass. State Police's Robot Version of a Bomb-Sniffing Dog Roscoe, a Massachusetts State Police robotic dog, is part of the team keeping the Boston Pops Fourth of July Spectacular safe this year. US & World Videos 1:19 How to enjoy gift-giving without spoiling kids 1:51 Santa and Mrs. Claus visit kids at Shriners Children's Boston 2:18 How much is too much? Navigating child gift-giving 3:50 Obesity expert discusses new proposal for U.S. dietary guidelines 4:41 Parents sue over AI chatbot they say encourages children to harm themselves and others