 From NPR and WBUR, I'm Scott Tong in Boston. This is Here and Now. This week, hundreds of people gathered just outside Yellowstone National Park to celebrate the birth of a rare white bison. Wyoming Public Radio's Hannah Merzbach was there. Near a dark blue lake outside Yellowstone National Park under cloudy skies, the crowd is silent as Lakota spiritual leader Arvel Lookinghorst takes the stage.