DR KUZNETZOV – In the last two years, Ukraine has become the most mined country in the world, surpassing warzones like Afghanistan, Iraq and Syria. 60 MINUTES' Scott Pelley travels to Izium, Ukraine – one of the most contaminated towns in the country – to see the crisis firsthand. On the ground he meets injured civilians, a heroic doctor treating them, and the deminers working to clear their land, mine by mine. Maria Gavrilovic is the producer.YOUR CHATBOT WILL SEE YOU NOW – With a shortage of therapists and a rising number of potential mental health patients, 60 MINUTES contributor and CBS News chief medical correspondent Jonathan LaPook reports on the artificial intelligence chatbots offering 24/7 support and meeting a demand – for better or worse. LaPook speaks with mental healthcare professionals and AI experts about how the industry is harnessing AI tools to engage with patients in a thoughtful and positive way. Andrew Wolff is the producer.THE RING – The mastermind behind two decades' worth of thefts at hallowed sports venues and small museums comes clean to 60 MINUTES' Jon Wertheim. He shares how he and his crew got away with Yogi Berra's World Series rings, Hall of Fame pitcher Christy Mathewson's jersey and artwork by Andy Warhol. Nathalie Sommer and Kaylee Tully are the producers.