"A blot on American history" is how President Joe Biden described Indian boarding schools as he formally apologized for them in October. For survivors of these institutions, designed to assimilate Indigenous children, it may be too little, too late. CPR's Elaine Tassy spoke with three people who endured  boarding schools, Beverly Granger, Amanda Kee and Ruby Left Hand Bull Sanchez, about how their lives were forever changed. Then, re-envisioning an unused rail line between Boulder and Erie. And, what a Denver man who visited very county in the U.S. learned about embracing differences.