Guthrie doorbell camera footage; Trump's bridge threat; A.I. medical advice

The FBI has released doorbell camera footage of Nancy Guthrie's home from the early morning of February 1. Jackson Proskow reports on what someone is seen doing the morning the 84-year-old vanished. Prime Minister Mark Carney is responding after U.S. President Donald Trump threatened to block the opening of the Gordie Howe International Bridge, which connects Ontario and Michigan. Dawna fact checks Trump's claims; Jeff Semple in is Windsor, Ont. to get reaction to the threat; and Mackenzie Gray explains how a billionaire Trump supporter may have something to do with this. The rise of artificial intelligence has led to a rise in people turning to A.I. chatbots for answers to medical questions. Heidi Petracek explains why experts are warning against this practice, as more Canadians give up on finding a doctor. In Italy, Redmond Shannon explains why some Olympic medals are breaking, and the solution in the works. Plus, Mike Armstrong reports on how Team Canada fared on day 4, and also looks at Saskatchewan freestyle skier Maïa Schwinghammer's unlikely journey from the flattest part of Canada to the Milano-Cortina Olympics. Learn more about your ad choices. Visit megaphone.fm/adchoices