Only on the "CBS This Morning" podcast, USA Today reporter Jayne O'Donnell joins CBS News' Hilary Lane to discuss her reporting on the life-threatening risks to students when nurses aren't available in schools. 40 percent of schools across the country do not have a full time nurse and 25 percent don't have a nurse at all. O'Donnell says the shortage is becoming more urgent as more students are diagnosed with chronic illnesses like asthma and diabetes. She shares how communities across the country are finding solutions to staffing school nurses, like the 26 school-based health centers run by local hospitals, and proposed legislation to help fund school nurse positions.