Transcript for Surprise Visit: Nicole Kidman and Keith Urban Sing to Children
Our PC index here in a Monday night at a possible medical breakthrough a bite on a pancreas from researchers at Mass. General -- Boston University. It uses a sensor just under the skin to monitor blood sugar levels and app on your phone calculates the right amount of insulin. And automatically releases it -- your bloodstream it could be real game changer for those with type one diabetes experimental for now. We'll stay on it. And this video going global tonight from a Children's Hospital in Australia just look who stopped by for an impromptu serenade. Okay. Stark either been performing amazing race -- -- left his wife Nicole Kidman selling off her singing skills. For change as well. And this video coming in tonight as well the high stakes rescue operation underway in the -- -- teams working around the clock. To say that 52 year old scientist trapped 3000 feet down from nine days now. He was exploring an underground cave when he was hit by -- falling rock he suffered a head injury -- injured man's feet on the stretcher. The sheer rocks the slippery terrain making it very difficult and rescue mission underway tonight a lot of people following this we will too.
This transcript has been automatically generated and may not be 100% accurate.