Watch one runner's selfless act of kindness at the Boston Marathon

Watch this 80-year-old experience the ride of her life

Watch art teacher inspire students to create without fear

Watch these twins reunite for the first time and try not to giggle with them

Watch this Amazon delivery driver add some fun to his route with a hopscotch break

Watch this boy's emotional reaction when his stepdad asks to adopt him

Watch a teacher's lesson in kindness that reached millions!